mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-28 00:24:18 +00:00
1301 lines
59 KiB
Nix
1301 lines
59 KiB
Nix
# See: https://wiki.strongswan.org/projects/strongswan/wiki/Swanctlconf
|
|
#
|
|
# When strongSwan is upgraded please update the parameters in this file. You can
|
|
# see which parameters should be deleted, changed or added by diffing
|
|
# swanctl.opt:
|
|
#
|
|
# git clone https://github.com/strongswan/strongswan.git
|
|
# cd strongswan
|
|
# git diff 5.7.2..5.8.0 src/swanctl/swanctl.opt
|
|
|
|
lib: with (import ./param-constructors.nix lib);
|
|
|
|
let
|
|
certParams = {
|
|
file = mkOptionalStrParam ''
|
|
Absolute path to the certificate to load. Passed as-is to the daemon, so
|
|
it must be readable by it.
|
|
</para><para>
|
|
Configure either this or <option>handle</option>, but not both, in one section.
|
|
'';
|
|
|
|
handle = mkOptionalHexParam ''
|
|
Hex-encoded CKA_ID or handle of the certificate on a token or TPM,
|
|
respectively.
|
|
</para><para>
|
|
Configure either this or <option>file</option>, but not both, in one section.
|
|
'';
|
|
|
|
slot = mkOptionalIntParam ''
|
|
Optional slot number of the token that stores the certificate.
|
|
'';
|
|
|
|
module = mkOptionalStrParam ''
|
|
Optional PKCS#11 module name.
|
|
'';
|
|
};
|
|
in {
|
|
authorities = mkAttrsOfParams ({
|
|
|
|
cacert = mkOptionalStrParam ''
|
|
The certificates may use a relative path from the swanctl
|
|
<literal>x509ca</literal> directory or an absolute path.
|
|
</para><para>
|
|
Configure one of <option>cacert</option>,
|
|
<option>file</option>, or
|
|
<option>handle</option> per section.
|
|
'';
|
|
|
|
cert_uri_base = mkOptionalStrParam ''
|
|
Defines the base URI for the Hash and URL feature supported by
|
|
IKEv2. Instead of exchanging complete certificates, IKEv2 allows one to
|
|
send an URI that resolves to the DER encoded certificate. The certificate
|
|
URIs are built by appending the SHA1 hash of the DER encoded certificates
|
|
to this base URI.
|
|
'';
|
|
|
|
crl_uris = mkCommaSepListParam [] ''
|
|
List of CRL distribution points (ldap, http, or file URI).
|
|
'';
|
|
|
|
ocsp_uris = mkCommaSepListParam [] ''
|
|
List of OCSP URIs.
|
|
'';
|
|
|
|
} // certParams) ''
|
|
Section defining complementary attributes of certification authorities, each
|
|
in its own subsection with an arbitrary yet unique name
|
|
'';
|
|
|
|
connections = mkAttrsOfParams {
|
|
|
|
version = mkIntParam 0 ''
|
|
IKE major version to use for connection.
|
|
<itemizedlist>
|
|
<listitem><para>1 uses IKEv1 aka ISAKMP,</para></listitem>
|
|
<listitem><para>2 uses IKEv2.</para></listitem>
|
|
<listitem><para>A connection using the default of 0 accepts both IKEv1 and IKEv2 as
|
|
responder, and initiates the connection actively with IKEv2.</para></listitem>
|
|
</itemizedlist>
|
|
'';
|
|
|
|
local_addrs = mkCommaSepListParam [] ''
|
|
Local address(es) to use for IKE communication. Takes
|
|
single IPv4/IPv6 addresses, DNS names, CIDR subnets or IP address ranges.
|
|
</para><para>
|
|
As initiator, the first non-range/non-subnet is used to initiate the
|
|
connection from. As responder, the local destination address must match at
|
|
least to one of the specified addresses, subnets or ranges.
|
|
</para><para>
|
|
If FQDNs are assigned they are resolved every time a configuration lookup
|
|
is done. If DNS resolution times out, the lookup is delayed for that time.
|
|
'';
|
|
|
|
remote_addrs = mkCommaSepListParam [] ''
|
|
Remote address(es) to use for IKE communication. Takes
|
|
single IPv4/IPv6 addresses, DNS names, CIDR subnets or IP address ranges.
|
|
</para><para>
|
|
As initiator, the first non-range/non-subnet is used to initiate the
|
|
connection to. As responder, the initiator source address must match at
|
|
least to one of the specified addresses, subnets or ranges.
|
|
</para><para>
|
|
If FQDNs are assigned they are resolved every time a configuration lookup
|
|
is done. If DNS resolution times out, the lookup is delayed for that time.
|
|
To initiate a connection, at least one specific address or DNS name must
|
|
be specified.
|
|
'';
|
|
|
|
local_port = mkIntParam 500 ''
|
|
Local UDP port for IKE communication. By default the port of the socket
|
|
backend is used, which is usually <literal>500</literal>. If port
|
|
<literal>500</literal> is used, automatic IKE port floating to port
|
|
<literal>4500</literal> is used to work around NAT issues.
|
|
</para><para>
|
|
Using a non-default local IKE port requires support from the socket
|
|
backend in use (socket-dynamic).
|
|
'';
|
|
|
|
remote_port = mkIntParam 500 ''
|
|
Remote UDP port for IKE communication. If the default of port
|
|
<literal>500</literal> is used, automatic IKE port floating to port
|
|
<literal>4500</literal> is used to work around NAT issues.
|
|
'';
|
|
|
|
proposals = mkCommaSepListParam ["default"] ''
|
|
A proposal is a set of algorithms. For non-AEAD algorithms, this includes
|
|
for IKE an encryption algorithm, an integrity algorithm, a pseudo random
|
|
function and a Diffie-Hellman group. For AEAD algorithms, instead of
|
|
encryption and integrity algorithms, a combined algorithm is used.
|
|
</para><para>
|
|
In IKEv2, multiple algorithms of the same kind can be specified in a
|
|
single proposal, from which one gets selected. In IKEv1, only one
|
|
algorithm per kind is allowed per proposal, more algorithms get implicitly
|
|
stripped. Use multiple proposals to offer different algorithms
|
|
combinations in IKEv1.
|
|
</para><para>
|
|
Algorithm keywords get separated using dashes. Multiple proposals may be
|
|
specified in a list. The special value <literal>default</literal> forms a
|
|
default proposal of supported algorithms considered safe, and is usually a
|
|
good choice for interoperability.
|
|
'';
|
|
|
|
vips = mkCommaSepListParam [] ''
|
|
List of virtual IPs to request in IKEv2 configuration payloads or IKEv1
|
|
Mode Config. The wildcard addresses <literal>0.0.0.0</literal> and
|
|
<literal>::</literal> request an arbitrary address, specific addresses may
|
|
be defined. The responder may return a different address, though, or none
|
|
at all.
|
|
'';
|
|
|
|
aggressive = mkYesNoParam no ''
|
|
Enables Aggressive Mode instead of Main Mode with Identity
|
|
Protection. Aggressive Mode is considered less secure, because the ID and
|
|
HASH payloads are exchanged unprotected. This allows a passive attacker to
|
|
snoop peer identities, and even worse, start dictionary attacks on the
|
|
Preshared Key.
|
|
'';
|
|
|
|
pull = mkYesNoParam yes ''
|
|
If the default of yes is used, Mode Config works in pull mode, where the
|
|
initiator actively requests a virtual IP. With no, push mode is used,
|
|
where the responder pushes down a virtual IP to the initiating peer.
|
|
</para><para>
|
|
Push mode is currently supported for IKEv1, but not in IKEv2. It is used
|
|
by a few implementations only, pull mode is recommended.
|
|
'';
|
|
|
|
dscp = mkStrParam "000000" ''
|
|
Differentiated Services Field Codepoint to set on outgoing IKE packets for
|
|
this connection. The value is a six digit binary encoded string specifying
|
|
the Codepoint to set, as defined in RFC 2474.
|
|
'';
|
|
|
|
encap = mkYesNoParam no ''
|
|
To enforce UDP encapsulation of ESP packets, the IKE daemon can fake the
|
|
NAT detection payloads. This makes the peer believe that NAT takes place
|
|
on the path, forcing it to encapsulate ESP packets in UDP.
|
|
</para><para>
|
|
Usually this is not required, but it can help to work around connectivity
|
|
issues with too restrictive intermediary firewalls.
|
|
'';
|
|
|
|
mobike = mkYesNoParam yes ''
|
|
Enables MOBIKE on IKEv2 connections. MOBIKE is enabled by default on IKEv2
|
|
connections, and allows mobility of clients and multi-homing on servers by
|
|
migrating active IPsec tunnels.
|
|
</para><para>
|
|
Usually keeping MOBIKE enabled is unproblematic, as it is not used if the
|
|
peer does not indicate support for it. However, due to the design of
|
|
MOBIKE, IKEv2 always floats to port 4500 starting from the second
|
|
exchange. Some implementations don't like this behavior, hence it can be
|
|
disabled.
|
|
'';
|
|
|
|
dpd_delay = mkDurationParam "0s" ''
|
|
Interval to check the liveness of a peer actively using IKEv2
|
|
INFORMATIONAL exchanges or IKEv1 R_U_THERE messages. Active DPD checking
|
|
is only enforced if no IKE or ESP/AH packet has been received for the
|
|
configured DPD delay.
|
|
'';
|
|
|
|
dpd_timeout = mkDurationParam "0s" ''
|
|
Charon by default uses the normal retransmission mechanism and timeouts to
|
|
check the liveness of a peer, as all messages are used for liveness
|
|
checking. For compatibility reasons, with IKEv1 a custom interval may be
|
|
specified; this option has no effect on connections using IKEv2.
|
|
'';
|
|
|
|
fragmentation = mkEnumParam ["yes" "accept" "force" "no"] "yes" ''
|
|
Use IKE fragmentation (proprietary IKEv1 extension or RFC 7383 IKEv2
|
|
fragmentation). Acceptable values are <literal>yes</literal> (the default
|
|
since 5.5.1), <literal>accept</literal> (since versions:5.5.3),
|
|
<literal>force</literal> and <literal>no</literal>.
|
|
<itemizedlist>
|
|
<listitem><para>If set to <literal>yes</literal>, and the peer
|
|
supports it, oversized IKE messages will be sent in fragments.</para></listitem>
|
|
<listitem><para>If set to
|
|
<literal>accept</literal>, support for fragmentation is announced to the peer but the daemon
|
|
does not send its own messages in fragments.</para></listitem>
|
|
<listitem><para>If set to <literal>force</literal> (only
|
|
supported for IKEv1) the initial IKE message will already be fragmented if
|
|
required.</para></listitem>
|
|
<listitem><para>Finally, setting the option to <literal>no</literal> will disable announcing
|
|
support for this feature.</para></listitem>
|
|
</itemizedlist>
|
|
</para><para>
|
|
Note that fragmented IKE messages sent by a peer are always processed
|
|
irrespective of the value of this option (even when set to no).
|
|
'';
|
|
|
|
childless = mkEnumParam [ "allow" "force" "never" ] "allow" ''
|
|
Use childless IKE_SA initiation (RFC 6023) for IKEv2. Acceptable values
|
|
are <literal>allow</literal> (the default), <literal>force</literal> and
|
|
<literal>never</literal>. If set to <literal>allow</literal>, responders
|
|
will accept childless IKE_SAs (as indicated via notify in the IKE_SA_INIT
|
|
response) while initiators continue to create regular IKE_SAs with the
|
|
first CHILD_SA created during IKE_AUTH, unless the IKE_SA is initiated
|
|
explicitly without any children (which will fail if the responder does not
|
|
support or has disabled this extension). If set to
|
|
<literal>force</literal>, only childless initiation is accepted and the
|
|
first CHILD_SA is created with a separate CREATE_CHILD_SA exchange
|
|
(e.g. to use an independent DH exchange for all CHILD_SAs). Finally,
|
|
setting the option to <literal>never</literal> disables support for
|
|
childless IKE_SAs as responder.
|
|
'';
|
|
|
|
send_certreq = mkYesNoParam yes ''
|
|
Send certificate request payloads to offer trusted root CA certificates to
|
|
the peer. Certificate requests help the peer to choose an appropriate
|
|
certificate/private key for authentication and are enabled by default.
|
|
Disabling certificate requests can be useful if too many trusted root CA
|
|
certificates are installed, as each certificate request increases the size
|
|
of the initial IKE packets.
|
|
'';
|
|
|
|
send_cert = mkEnumParam ["always" "never" "ifasked" ] "ifasked" ''
|
|
Send certificate payloads when using certificate authentication.
|
|
<itemizedlist>
|
|
<listitem><para>With the default of <literal>ifasked</literal> the daemon sends
|
|
certificate payloads only if certificate requests have been received.</para></listitem>
|
|
<listitem><para><literal>never</literal> disables sending of certificate payloads
|
|
altogether,</para></listitem>
|
|
<listitem><para><literal>always</literal> causes certificate payloads to be sent
|
|
unconditionally whenever certificate authentication is used.</para></listitem>
|
|
</itemizedlist>
|
|
'';
|
|
|
|
ppk_id = mkOptionalStrParam ''
|
|
String identifying the Postquantum Preshared Key (PPK) to be used.
|
|
'';
|
|
|
|
ppk_required = mkYesNoParam no ''
|
|
Whether a Postquantum Preshared Key (PPK) is required for this connection.
|
|
'';
|
|
|
|
keyingtries = mkIntParam 1 ''
|
|
Number of retransmission sequences to perform during initial
|
|
connect. Instead of giving up initiation after the first retransmission
|
|
sequence with the default value of <literal>1</literal>, additional
|
|
sequences may be started according to the configured value. A value of
|
|
<literal>0</literal> initiates a new sequence until the connection
|
|
establishes or fails with a permanent error.
|
|
'';
|
|
|
|
unique = mkEnumParam ["no" "never" "keep" "replace"] "no" ''
|
|
Connection uniqueness policy to enforce. To avoid multiple connections
|
|
from the same user, a uniqueness policy can be enforced.
|
|
</para><para>
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
The value <literal>never</literal> does never enforce such a policy, even
|
|
if a peer included INITIAL_CONTACT notification messages,
|
|
</para></listitem>
|
|
<listitem><para>
|
|
whereas <literal>no</literal> replaces existing connections for the same
|
|
identity if a new one has the INITIAL_CONTACT notify.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>keep</literal> rejects new connection attempts if the same user
|
|
already has an active connection,
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>replace</literal> deletes any existing connection if a new one
|
|
for the same user gets established.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
To compare connections for uniqueness, the remote IKE identity is used. If
|
|
EAP or XAuth authentication is involved, the EAP-Identity or XAuth
|
|
username is used to enforce the uniqueness policy instead.
|
|
</para><para>
|
|
On initiators this setting specifies whether an INITIAL_CONTACT notify is
|
|
sent during IKE_AUTH if no existing connection is found with the remote
|
|
peer (determined by the identities of the first authentication
|
|
round). Unless set to <literal>never</literal> the client will send a notify.
|
|
'';
|
|
|
|
reauth_time = mkDurationParam "0s" ''
|
|
Time to schedule IKE reauthentication. IKE reauthentication recreates the
|
|
IKE/ISAKMP SA from scratch and re-evaluates the credentials. In asymmetric
|
|
configurations (with EAP or configuration payloads) it might not be
|
|
possible to actively reauthenticate as responder. The IKEv2
|
|
reauthentication lifetime negotiation can instruct the client to perform
|
|
reauthentication.
|
|
</para><para>
|
|
Reauthentication is disabled by default. Enabling it usually may lead to
|
|
small connection interruptions, as strongSwan uses a break-before-make
|
|
policy with IKEv2 to avoid any conflicts with associated tunnel resources.
|
|
'';
|
|
|
|
rekey_time = mkDurationParam "4h" ''
|
|
IKE rekeying refreshes key material using a Diffie-Hellman exchange, but
|
|
does not re-check associated credentials. It is supported in IKEv2 only,
|
|
IKEv1 performs a reauthentication procedure instead.
|
|
</para><para>
|
|
With the default value IKE rekeying is scheduled every 4 hours, minus the
|
|
configured rand_time. If a reauth_time is configured, rekey_time defaults
|
|
to zero, disabling rekeying; explicitly set both to enforce rekeying and
|
|
reauthentication.
|
|
'';
|
|
|
|
over_time = mkOptionalDurationParam ''
|
|
Hard IKE_SA lifetime if rekey/reauth does not complete, as time. To avoid
|
|
having an IKE/ISAKMP kept alive if IKE reauthentication or rekeying fails
|
|
perpetually, a maximum hard lifetime may be specified. If the IKE_SA fails
|
|
to rekey or reauthenticate within the specified time, the IKE_SA gets
|
|
closed.
|
|
</para><para>
|
|
In contrast to CHILD_SA rekeying, over_time is relative in time to the
|
|
rekey_time and reauth_time values, as it applies to both.
|
|
</para><para>
|
|
The default is 10% of the longer of <option>rekey_time</option> and
|
|
<option>reauth_time</option>.
|
|
'';
|
|
|
|
rand_time = mkOptionalDurationParam ''
|
|
Time range from which to choose a random value to subtract from
|
|
rekey/reauth times. To avoid having both peers initiating the rekey/reauth
|
|
procedure simultaneously, a random time gets subtracted from the
|
|
rekey/reauth times.
|
|
</para><para>
|
|
The default is equal to the configured <option>over_time</option>.
|
|
'';
|
|
|
|
pools = mkCommaSepListParam [] ''
|
|
List of named IP pools to allocate virtual IP addresses
|
|
and other configuration attributes from. Each name references a pool by
|
|
name from either the pools section or an external pool.
|
|
'';
|
|
|
|
if_id_in = mkStrParam "0" ''
|
|
XFRM interface ID set on inbound policies/SA, can be overridden by child
|
|
config, see there for details.
|
|
'';
|
|
|
|
if_id_out = mkStrParam "0" ''
|
|
XFRM interface ID set on outbound policies/SA, can be overridden by child
|
|
config, see there for details.
|
|
'';
|
|
|
|
mediation = mkYesNoParam no ''
|
|
Whether this connection is a mediation connection, that is, whether this
|
|
connection is used to mediate other connections using the IKEv2 Mediation
|
|
Extension. Mediation connections create no CHILD_SA.
|
|
'';
|
|
|
|
mediated_by = mkOptionalStrParam ''
|
|
The name of the connection to mediate this connection through. If given,
|
|
the connection will be mediated through the named mediation
|
|
connection. The mediation connection must have mediation enabled.
|
|
'';
|
|
|
|
mediation_peer = mkOptionalStrParam ''
|
|
Identity under which the peer is registered at the mediation server, that
|
|
is, the IKE identity the other end of this connection uses as its local
|
|
identity on its connection to the mediation server. This is the identity
|
|
we request the mediation server to mediate us with. Only relevant on
|
|
connections that set mediated_by. If it is not given, the remote IKE
|
|
identity of the first authentication round of this connection will be
|
|
used.
|
|
'';
|
|
|
|
local = mkPrefixedAttrsOfParams {
|
|
|
|
round = mkIntParam 0 ''
|
|
Optional numeric identifier by which authentication rounds are
|
|
sorted. If not specified rounds are ordered by their position in the
|
|
config file/vici message.
|
|
'';
|
|
|
|
certs = mkCommaSepListParam [] ''
|
|
List of certificate candidates to use for
|
|
authentication. The certificates may use a relative path from the
|
|
swanctl <literal>x509</literal> directory or an absolute path.
|
|
</para><para>
|
|
The certificate used for authentication is selected based on the
|
|
received certificate request payloads. If no appropriate CA can be
|
|
located, the first certificate is used.
|
|
'';
|
|
|
|
cert = mkPostfixedAttrsOfParams certParams ''
|
|
Section for a certificate candidate to use for
|
|
authentication. Certificates in certs are transmitted as binary blobs,
|
|
these sections offer more flexibility.
|
|
'';
|
|
|
|
pubkeys = mkCommaSepListParam [] ''
|
|
List of raw public key candidates to use for
|
|
authentication. The public keys may use a relative path from the swanctl
|
|
<literal>pubkey</literal> directory or an absolute path.
|
|
</para><para>
|
|
Even though multiple local public keys could be defined in principle,
|
|
only the first public key in the list is used for authentication.
|
|
'';
|
|
|
|
auth = mkStrParam "pubkey" ''
|
|
Authentication to perform locally.
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
The default <literal>pubkey</literal> uses public key authentication
|
|
using a private key associated to a usable certificate.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>psk</literal> uses pre-shared key authentication.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
The IKEv1 specific <literal>xauth</literal> is used for XAuth or Hybrid
|
|
authentication,
|
|
</para></listitem>
|
|
<listitem><para>
|
|
while the IKEv2 specific <literal>eap</literal> keyword defines EAP
|
|
authentication.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
For <literal>xauth</literal>, a specific backend name may be appended,
|
|
separated by a dash. The appropriate <literal>xauth</literal> backend is
|
|
selected to perform the XAuth exchange. For traditional XAuth, the
|
|
<literal>xauth</literal> method is usually defined in the second
|
|
authentication round following an initial <literal>pubkey</literal> (or
|
|
<literal>psk</literal>) round. Using <literal>xauth</literal> in the
|
|
first round performs Hybrid Mode client authentication.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
For <literal>eap</literal>, a specific EAP method name may be appended, separated by a
|
|
dash. An EAP module implementing the appropriate method is selected to
|
|
perform the EAP conversation.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
Since 5.4.0, if both peers support RFC 7427 ("Signature Authentication
|
|
in IKEv2") specific hash algorithms to be used during IKEv2
|
|
authentication may be configured. To do so use <literal>ike:</literal>
|
|
followed by a trust chain signature scheme constraint (see description
|
|
of the <option>remote</option> section's <option>auth</option>
|
|
keyword). For example, with <literal>ike:pubkey-sha384-sha256</literal>
|
|
a public key signature scheme with either SHA-384 or SHA-256 would get
|
|
used for authentication, in that order and depending on the hash
|
|
algorithms supported by the peer. If no specific hash algorithms are
|
|
configured, the default is to prefer an algorithm that matches or
|
|
exceeds the strength of the signature key. If no constraints with
|
|
<literal>ike:</literal> prefix are configured any signature scheme
|
|
constraint (without <literal>ike:</literal> prefix) will also apply to
|
|
IKEv2 authentication, unless this is disabled in
|
|
<literal>strongswan.conf</literal>. To use RSASSA-PSS signatures use
|
|
<literal>rsa/pss</literal> instead of <literal>pubkey</literal> or
|
|
<literal>rsa</literal> as in e.g.
|
|
<literal>ike:rsa/pss-sha256</literal>. If <literal>pubkey</literal> or
|
|
<literal>rsa</literal> constraints are configured RSASSA-PSS signatures
|
|
will only be used if enabled in <literal>strongswan.conf</literal>(5).
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
'';
|
|
|
|
id = mkOptionalStrParam ''
|
|
IKE identity to use for authentication round. When using certificate
|
|
authentication, the IKE identity must be contained in the certificate,
|
|
either as subject or as subjectAltName.
|
|
'';
|
|
|
|
eap_id = mkOptionalStrParam ''
|
|
Client EAP-Identity to use in EAP-Identity exchange and the EAP method.
|
|
'';
|
|
|
|
aaa_id = mkOptionalStrParam ''
|
|
Server side EAP-Identity to expect in the EAP method. Some EAP methods,
|
|
such as EAP-TLS, use an identity for the server to perform mutual
|
|
authentication. This identity may differ from the IKE identity,
|
|
especially when EAP authentication is delegated from the IKE responder
|
|
to an AAA backend.
|
|
</para><para>
|
|
For EAP-(T)TLS, this defines the identity for which the server must
|
|
provide a certificate in the TLS exchange.
|
|
'';
|
|
|
|
xauth_id = mkOptionalStrParam ''
|
|
Client XAuth username used in the XAuth exchange.
|
|
'';
|
|
|
|
} ''
|
|
Section for a local authentication round. A local authentication round
|
|
defines the rules how authentication is performed for the local
|
|
peer. Multiple rounds may be defined to use IKEv2 RFC 4739 Multiple
|
|
Authentication or IKEv1 XAuth.
|
|
</para><para>
|
|
Each round is defined in a section having <literal>local</literal> as
|
|
prefix, and an optional unique suffix. To define a single authentication
|
|
round, the suffix may be omitted.
|
|
'';
|
|
|
|
remote = mkPrefixedAttrsOfParams {
|
|
|
|
round = mkIntParam 0 ''
|
|
Optional numeric identifier by which authentication rounds are
|
|
sorted. If not specified rounds are ordered by their position in the
|
|
config file/vici message.
|
|
'';
|
|
|
|
id = mkStrParam "%any" ''
|
|
IKE identity to expect for authentication round. When using certificate
|
|
authentication, the IKE identity must be contained in the certificate,
|
|
either as subject or as subjectAltName.
|
|
'';
|
|
|
|
eap_id = mkOptionalStrParam ''
|
|
Identity to use as peer identity during EAP authentication. If set to
|
|
<literal>%any</literal> the EAP-Identity method will be used to ask the
|
|
client for an EAP identity.
|
|
'';
|
|
|
|
groups = mkCommaSepListParam [] ''
|
|
Authorization group memberships to require. The peer
|
|
must prove membership to at least one of the specified groups. Group
|
|
membership can be certified by different means, for example by
|
|
appropriate Attribute Certificates or by an AAA backend involved in the
|
|
authentication.
|
|
'';
|
|
|
|
cert_policy = mkCommaSepListParam [] ''
|
|
List of certificate policy OIDs the peer's certificate
|
|
must have. OIDs are specified using the numerical dotted representation.
|
|
'';
|
|
|
|
certs = mkCommaSepListParam [] ''
|
|
List of certificates to accept for authentication. The certificates may
|
|
use a relative path from the swanctl <literal>x509</literal> directory
|
|
or an absolute path.
|
|
'';
|
|
|
|
cert = mkPostfixedAttrsOfParams certParams ''
|
|
Section for a certificate candidate to use for
|
|
authentication. Certificates in certs are transmitted as binary blobs,
|
|
these sections offer more flexibility.
|
|
'';
|
|
|
|
cacerts = mkCommaSepListParam [] ''
|
|
List of CA certificates to accept for
|
|
authentication. The certificates may use a relative path from the
|
|
swanctl <literal>x509ca</literal> directory or an absolute path.
|
|
'';
|
|
|
|
cacert = mkPostfixedAttrsOfParams certParams ''
|
|
Section for a CA certificate to accept for authentication. Certificates
|
|
in cacerts are transmitted as binary blobs, these sections offer more
|
|
flexibility.
|
|
'';
|
|
|
|
pubkeys = mkCommaSepListParam [] ''
|
|
List of raw public keys to accept for
|
|
authentication. The public keys may use a relative path from the swanctl
|
|
<literal>pubkey</literal> directory or an absolute path.
|
|
'';
|
|
|
|
revocation = mkEnumParam ["strict" "ifuri" "relaxed"] "relaxed" ''
|
|
Certificate revocation policy for CRL or OCSP revocation.
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
A <literal>strict</literal> revocation policy fails if no revocation information is
|
|
available, i.e. the certificate is not known to be unrevoked.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>ifuri</literal> fails only if a CRL/OCSP URI is available, but certificate
|
|
revocation checking fails, i.e. there should be revocation information
|
|
available, but it could not be obtained.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
The default revocation policy <literal>relaxed</literal> fails only if a certificate is
|
|
revoked, i.e. it is explicitly known that it is bad.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
'';
|
|
|
|
auth = mkStrParam "pubkey" ''
|
|
Authentication to expect from remote. See the <option>local</option>
|
|
section's <option>auth</option> keyword description about the details of
|
|
supported mechanisms.
|
|
</para><para>
|
|
Since 5.4.0, to require a trustchain public key strength for the remote
|
|
side, specify the key type followed by the minimum strength in bits (for
|
|
example <literal>ecdsa-384</literal> or
|
|
<literal>rsa-2048-ecdsa-256</literal>). To limit the acceptable set of
|
|
hashing algorithms for trustchain validation, append hash algorithms to
|
|
pubkey or a key strength definition (for example
|
|
<literal>pubkey-sha256-sha512</literal>,
|
|
<literal>rsa-2048-sha256-sha384-sha512</literal> or
|
|
<literal>rsa-2048-sha256-ecdsa-256-sha256-sha384</literal>).
|
|
Unless disabled in <literal>strongswan.conf</literal>, or explicit IKEv2
|
|
signature constraints are configured (refer to the description of the
|
|
<option>local</option> section's <option>auth</option> keyword for
|
|
details), such key types and hash algorithms are also applied as
|
|
constraints against IKEv2 signature authentication schemes used by the
|
|
remote side. To require RSASSA-PSS signatures use
|
|
<literal>rsa/pss</literal> instead of <literal>pubkey</literal> or
|
|
<literal>rsa</literal> as in e.g. <literal>rsa/pss-sha256</literal>. If
|
|
<literal>pubkey</literal> or <literal>rsa</literal> constraints are
|
|
configured RSASSA-PSS signatures will only be accepted if enabled in
|
|
<literal>strongswan.conf</literal>(5).
|
|
</para><para>
|
|
To specify trust chain constraints for EAP-(T)TLS, append a colon to the
|
|
EAP method, followed by the key type/size and hash algorithm as
|
|
discussed above (e.g. <literal>eap-tls:ecdsa-384-sha384</literal>).
|
|
'';
|
|
|
|
} ''
|
|
Section for a remote authentication round. A remote authentication round
|
|
defines the constraints how the peers must authenticate to use this
|
|
connection. Multiple rounds may be defined to use IKEv2 RFC 4739 Multiple
|
|
Authentication or IKEv1 XAuth.
|
|
</para><para>
|
|
Each round is defined in a section having <literal>remote</literal> as
|
|
prefix, and an optional unique suffix. To define a single authentication
|
|
round, the suffix may be omitted.
|
|
'';
|
|
|
|
children = mkAttrsOfParams {
|
|
ah_proposals = mkCommaSepListParam [] ''
|
|
AH proposals to offer for the CHILD_SA. A proposal is a set of
|
|
algorithms. For AH, this includes an integrity algorithm and an optional
|
|
Diffie-Hellman group. If a DH group is specified, CHILD_SA/Quick Mode
|
|
rekeying and initial negotiation uses a separate Diffie-Hellman exchange
|
|
using the specified group (refer to esp_proposals for details).
|
|
</para><para>
|
|
In IKEv2, multiple algorithms of the same kind can be specified in a
|
|
single proposal, from which one gets selected. In IKEv1, only one
|
|
algorithm per kind is allowed per proposal, more algorithms get
|
|
implicitly stripped. Use multiple proposals to offer different algorithms
|
|
combinations in IKEv1.
|
|
</para><para>
|
|
Algorithm keywords get separated using dashes. Multiple proposals may be
|
|
specified in a list. The special value <literal>default</literal> forms
|
|
a default proposal of supported algorithms considered safe, and is
|
|
usually a good choice for interoperability. By default no AH proposals
|
|
are included, instead ESP is proposed.
|
|
'';
|
|
|
|
esp_proposals = mkCommaSepListParam ["default"] ''
|
|
ESP proposals to offer for the CHILD_SA. A proposal is a set of
|
|
algorithms. For ESP non-AEAD proposals, this includes an integrity
|
|
algorithm, an encryption algorithm, an optional Diffie-Hellman group and
|
|
an optional Extended Sequence Number Mode indicator. For AEAD proposals,
|
|
a combined mode algorithm is used instead of the separate
|
|
encryption/integrity algorithms.
|
|
</para><para>
|
|
If a DH group is specified, CHILD_SA/Quick Mode rekeying and initial
|
|
negotiation use a separate Diffie-Hellman exchange using the specified
|
|
group. However, for IKEv2, the keys of the CHILD_SA created implicitly
|
|
with the IKE_SA will always be derived from the IKE_SA's key material. So
|
|
any DH group specified here will only apply when the CHILD_SA is later
|
|
rekeyed or is created with a separate CREATE_CHILD_SA exchange. A
|
|
proposal mismatch might, therefore, not immediately be noticed when the
|
|
SA is established, but may later cause rekeying to fail.
|
|
</para><para>
|
|
Extended Sequence Number support may be indicated with the
|
|
<literal>esn</literal> and <literal>noesn</literal> values, both may be
|
|
included to indicate support for both modes. If omitted,
|
|
<literal>noesn</literal> is assumed.
|
|
</para><para>
|
|
In IKEv2, multiple algorithms of the same kind can be specified in a
|
|
single proposal, from which one gets selected. In IKEv1, only one
|
|
algorithm per kind is allowed per proposal, more algorithms get
|
|
implicitly stripped. Use multiple proposals to offer different algorithms
|
|
combinations in IKEv1.
|
|
</para><para>
|
|
Algorithm keywords get separated using dashes. Multiple proposals may be
|
|
specified as a list. The special value <literal>default</literal> forms
|
|
a default proposal of supported algorithms considered safe, and is
|
|
usually a good choice for interoperability. If no algorithms are
|
|
specified for AH nor ESP, the default set of algorithms for ESP is
|
|
included.
|
|
'';
|
|
|
|
sha256_96 = mkYesNoParam no ''
|
|
HMAC-SHA-256 is used with 128-bit truncation with IPsec. For
|
|
compatibility with implementations that incorrectly use 96-bit truncation
|
|
this option may be enabled to configure the shorter truncation length in
|
|
the kernel. This is not negotiated, so this only works with peers that
|
|
use the incorrect truncation length (or have this option enabled).
|
|
'';
|
|
|
|
local_ts = mkCommaSepListParam ["dynamic"] ''
|
|
List of local traffic selectors to include in CHILD_SA. Each selector is
|
|
a CIDR subnet definition, followed by an optional proto/port
|
|
selector. The special value <literal>dynamic</literal> may be used
|
|
instead of a subnet definition, which gets replaced by the tunnel outer
|
|
address or the virtual IP, if negotiated. This is the default.
|
|
</para><para>
|
|
A protocol/port selector is surrounded by opening and closing square
|
|
brackets. Between these brackets, a numeric or getservent(3) protocol
|
|
name may be specified. After the optional protocol restriction, an
|
|
optional port restriction may be specified, separated by a slash. The
|
|
port restriction may be numeric, a getservent(3) service name, or the
|
|
special value <literal>opaque</literal> for RFC 4301 OPAQUE
|
|
selectors. Port ranges may be specified as well, none of the kernel
|
|
backends currently support port ranges, though.
|
|
</para><para>
|
|
When IKEv1 is used only the first selector is interpreted, except if the
|
|
Cisco Unity extension plugin is used. This is due to a limitation of the
|
|
IKEv1 protocol, which only allows a single pair of selectors per
|
|
CHILD_SA. So to tunnel traffic matched by several pairs of selectors when
|
|
using IKEv1 several children (CHILD_SAs) have to be defined that cover
|
|
the selectors. The IKE daemon uses traffic selector narrowing for IKEv1,
|
|
the same way it is standardized and implemented for IKEv2. However, this
|
|
may lead to problems with other implementations. To avoid that, configure
|
|
identical selectors in such scenarios.
|
|
'';
|
|
|
|
remote_ts = mkCommaSepListParam ["dynamic"] ''
|
|
List of remote selectors to include in CHILD_SA. See
|
|
<option>local_ts</option> for a description of the selector syntax.
|
|
'';
|
|
|
|
rekey_time = mkDurationParam "1h" ''
|
|
Time to schedule CHILD_SA rekeying. CHILD_SA rekeying refreshes key
|
|
material, optionally using a Diffie-Hellman exchange if a group is
|
|
specified in the proposal. To avoid rekey collisions initiated by both
|
|
ends simultaneously, a value in the range of <option>rand_time</option>
|
|
gets subtracted to form the effective soft lifetime.
|
|
</para><para>
|
|
By default CHILD_SA rekeying is scheduled every hour, minus
|
|
<option>rand_time</option>.
|
|
'';
|
|
|
|
life_time = mkOptionalDurationParam ''
|
|
Maximum lifetime before CHILD_SA gets closed. Usually this hard lifetime
|
|
is never reached, because the CHILD_SA gets rekeyed before. If that fails
|
|
for whatever reason, this limit closes the CHILD_SA. The default is 10%
|
|
more than the <option>rekey_time</option>.
|
|
'';
|
|
|
|
rand_time = mkOptionalDurationParam ''
|
|
Time range from which to choose a random value to subtract from
|
|
<option>rekey_time</option>. The default is the difference between
|
|
<option>life_time</option> and <option>rekey_time</option>.
|
|
'';
|
|
|
|
rekey_bytes = mkIntParam 0 ''
|
|
Number of bytes processed before initiating CHILD_SA rekeying. CHILD_SA
|
|
rekeying refreshes key material, optionally using a Diffie-Hellman
|
|
exchange if a group is specified in the proposal.
|
|
</para><para>
|
|
To avoid rekey collisions initiated by both ends simultaneously, a value
|
|
in the range of <option>rand_bytes</option> gets subtracted to form the
|
|
effective soft volume limit.
|
|
</para><para>
|
|
Volume based CHILD_SA rekeying is disabled by default.
|
|
'';
|
|
|
|
life_bytes = mkOptionalIntParam ''
|
|
Maximum bytes processed before CHILD_SA gets closed. Usually this hard
|
|
volume limit is never reached, because the CHILD_SA gets rekeyed
|
|
before. If that fails for whatever reason, this limit closes the
|
|
CHILD_SA. The default is 10% more than <option>rekey_bytes</option>.
|
|
'';
|
|
|
|
rand_bytes = mkOptionalIntParam ''
|
|
Byte range from which to choose a random value to subtract from
|
|
<option>rekey_bytes</option>. The default is the difference between
|
|
<option>life_bytes</option> and <option>rekey_bytes</option>.
|
|
'';
|
|
|
|
rekey_packets = mkIntParam 0 ''
|
|
Number of packets processed before initiating CHILD_SA rekeying. CHILD_SA
|
|
rekeying refreshes key material, optionally using a Diffie-Hellman
|
|
exchange if a group is specified in the proposal.
|
|
</para><para>
|
|
To avoid rekey collisions initiated by both ends simultaneously, a value
|
|
in the range of <option>rand_packets</option> gets subtracted to form
|
|
the effective soft packet count limit.
|
|
</para><para>
|
|
Packet count based CHILD_SA rekeying is disabled by default.
|
|
'';
|
|
|
|
life_packets = mkOptionalIntParam ''
|
|
Maximum number of packets processed before CHILD_SA gets closed. Usually
|
|
this hard packets limit is never reached, because the CHILD_SA gets
|
|
rekeyed before. If that fails for whatever reason, this limit closes the
|
|
CHILD_SA.
|
|
</para><para>
|
|
The default is 10% more than <option>rekey_bytes</option>.
|
|
'';
|
|
|
|
rand_packets = mkOptionalIntParam ''
|
|
Packet range from which to choose a random value to subtract from
|
|
<option>rekey_packets</option>. The default is the difference between
|
|
<option>life_packets</option> and <option>rekey_packets</option>.
|
|
'';
|
|
|
|
updown = mkOptionalStrParam ''
|
|
Updown script to invoke on CHILD_SA up and down events.
|
|
'';
|
|
|
|
hostaccess = mkYesNoParam no ''
|
|
Hostaccess variable to pass to <literal>updown</literal> script.
|
|
'';
|
|
|
|
mode = mkEnumParam [ "tunnel"
|
|
"transport"
|
|
"transport_proxy"
|
|
"beet"
|
|
"pass"
|
|
"drop"
|
|
] "tunnel" ''
|
|
IPsec Mode to establish CHILD_SA with.
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
<literal>tunnel</literal> negotiates the CHILD_SA in IPsec Tunnel Mode,
|
|
</para></listitem>
|
|
<listitem><para>
|
|
whereas <literal>transport</literal> uses IPsec Transport Mode.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>transport_proxy</literal> signifying the special Mobile IPv6
|
|
Transport Proxy Mode.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>beet</literal> is the Bound End to End Tunnel mixture mode,
|
|
working with fixed inner addresses without the need to include them in
|
|
each packet.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
Both <literal>transport</literal> and <literal>beet</literal> modes are
|
|
subject to mode negotiation; <literal>tunnel</literal> mode is
|
|
negotiated if the preferred mode is not available.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>pass</literal> and <literal>drop</literal> are used to install
|
|
shunt policies which explicitly bypass the defined traffic from IPsec
|
|
processing or drop it, respectively.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
'';
|
|
|
|
policies = mkYesNoParam yes ''
|
|
Whether to install IPsec policies or not. Disabling this can be useful in
|
|
some scenarios e.g. MIPv6, where policies are not managed by the IKE
|
|
daemon. Since 5.3.3.
|
|
'';
|
|
|
|
policies_fwd_out = mkYesNoParam no ''
|
|
Whether to install outbound FWD IPsec policies or not. Enabling this is
|
|
required in case there is a drop policy that would match and block
|
|
forwarded traffic for this CHILD_SA. Since 5.5.1.
|
|
'';
|
|
|
|
dpd_action = mkEnumParam ["clear" "trap" "restart"] "clear" ''
|
|
Action to perform for this CHILD_SA on DPD timeout. The default clear
|
|
closes the CHILD_SA and does not take further action. trap installs a
|
|
trap policy, which will catch matching traffic and tries to re-negotiate
|
|
the tunnel on-demand. restart immediately tries to re-negotiate the
|
|
CHILD_SA under a fresh IKE_SA.
|
|
'';
|
|
|
|
ipcomp = mkYesNoParam no ''
|
|
Enable IPComp compression before encryption. If enabled, IKE tries to
|
|
negotiate IPComp compression to compress ESP payload data prior to
|
|
encryption.
|
|
'';
|
|
|
|
inactivity = mkDurationParam "0s" ''
|
|
Timeout before closing CHILD_SA after inactivity. If no traffic has been
|
|
processed in either direction for the configured timeout, the CHILD_SA
|
|
gets closed due to inactivity. The default value of 0 disables inactivity
|
|
checks.
|
|
'';
|
|
|
|
reqid = mkIntParam 0 ''
|
|
Fixed reqid to use for this CHILD_SA. This might be helpful in some
|
|
scenarios, but works only if each CHILD_SA configuration is instantiated
|
|
not more than once. The default of 0 uses dynamic reqids, allocated
|
|
incrementally.
|
|
'';
|
|
|
|
priority = mkIntParam 0 ''
|
|
Optional fixed priority for IPsec policies. This could be useful to
|
|
install high-priority drop policies. The default of 0 uses dynamically
|
|
calculated priorities based on the size of the traffic selectors.
|
|
'';
|
|
|
|
interface = mkOptionalStrParam ''
|
|
Optional interface name to restrict outbound IPsec policies.
|
|
'';
|
|
|
|
mark_in = mkStrParam "0/0x00000000" ''
|
|
Netfilter mark and mask for input traffic. On Linux, Netfilter may
|
|
require marks on each packet to match an SA/policy having that option
|
|
set. This allows installing duplicate policies and enables Netfilter
|
|
rules to select specific SAs/policies for incoming traffic. Note that
|
|
inbound marks are only set on policies, by default, unless
|
|
<option>mark_in_sa</option> is enabled. The special value
|
|
<literal>%unique</literal> sets a unique mark on each CHILD_SA instance,
|
|
beyond that the value <literal>%unique-dir</literal> assigns a different
|
|
unique mark for each
|
|
</para><para>
|
|
An additional mask may be appended to the mark, separated by
|
|
<literal>/</literal>. The default mask if omitted is
|
|
<literal>0xffffffff</literal>.
|
|
'';
|
|
|
|
mark_in_sa = mkYesNoParam no ''
|
|
Whether to set <option>mark_in</option> on the inbound SA. By default,
|
|
the inbound mark is only set on the inbound policy. The tuple destination
|
|
address, protocol and SPI is unique and the mark is not required to find
|
|
the correct SA, allowing to mark traffic after decryption instead (where
|
|
more specific selectors may be used) to match different policies. Marking
|
|
packets before decryption is still possible, even if no mark is set on
|
|
the SA.
|
|
'';
|
|
|
|
mark_out = mkStrParam "0/0x00000000" ''
|
|
Netfilter mark and mask for output traffic. On Linux, Netfilter may
|
|
require marks on each packet to match a policy/SA having that option
|
|
set. This allows installing duplicate policies and enables Netfilter
|
|
rules to select specific policies/SAs for outgoing traffic. The special
|
|
value <literal>%unique</literal> sets a unique mark on each CHILD_SA
|
|
instance, beyond that the value <literal>%unique-dir</literal> assigns a
|
|
different unique mark for each CHILD_SA direction (in/out).
|
|
</para><para>
|
|
An additional mask may be appended to the mark, separated by
|
|
<literal>/</literal>. The default mask if omitted is
|
|
<literal>0xffffffff</literal>.
|
|
'';
|
|
|
|
set_mark_in = mkStrParam "0/0x00000000" ''
|
|
Netfilter mark applied to packets after the inbound IPsec SA processed
|
|
them. This way it's not necessary to mark packets via Netfilter before
|
|
decryption or right afterwards to match policies or process them
|
|
differently (e.g. via policy routing).
|
|
|
|
An additional mask may be appended to the mark, separated by
|
|
<literal>/</literal>. The default mask if omitted is 0xffffffff. The
|
|
special value <literal>%same</literal> uses the value (but not the mask)
|
|
from <option>mark_in</option> as mark value, which can be fixed,
|
|
<literal>%unique</literal> or <literal>%unique-dir</literal>.
|
|
|
|
Setting marks in XFRM input requires Linux 4.19 or higher.
|
|
'';
|
|
|
|
set_mark_out = mkStrParam "0/0x00000000" ''
|
|
Netfilter mark applied to packets after the outbound IPsec SA processed
|
|
them. This allows processing ESP packets differently than the original
|
|
traffic (e.g. via policy routing).
|
|
|
|
An additional mask may be appended to the mark, separated by
|
|
<literal>/</literal>. The default mask if omitted is 0xffffffff. The
|
|
special value <literal>%same</literal> uses the value (but not the mask)
|
|
from <option>mark_out</option> as mark value, which can be fixed,
|
|
<literal>%unique_</literal> or <literal>%unique-dir</literal>.
|
|
|
|
Setting marks in XFRM output is supported since Linux 4.14. Setting a
|
|
mask requires at least Linux 4.19.
|
|
'';
|
|
|
|
if_id_in = mkStrParam "0" ''
|
|
XFRM interface ID set on inbound policies/SA. This allows installing
|
|
duplicate policies/SAs and associates them with an interface with the
|
|
same ID. The special value <literal>%unique</literal> sets a unique
|
|
interface ID on each CHILD_SA instance, beyond that the value
|
|
<literal>%unique-dir</literal> assigns a different unique interface ID
|
|
for each CHILD_SA direction (in/out).
|
|
'';
|
|
|
|
if_id_out = mkStrParam "0" ''
|
|
XFRM interface ID set on outbound policies/SA. This allows installing
|
|
duplicate policies/SAs and associates them with an interface with the
|
|
same ID. The special value <literal>%unique</literal> sets a unique
|
|
interface ID on each CHILD_SA instance, beyond that the value
|
|
<literal>%unique-dir</literal> assigns a different unique interface ID
|
|
for each CHILD_SA direction (in/out).
|
|
|
|
The daemon will not install routes for CHILD_SAs that have this option set.
|
|
'';
|
|
|
|
tfc_padding = mkParamOfType (with lib.types; either int (enum ["mtu"])) 0 ''
|
|
Pads ESP packets with additional data to have a consistent ESP packet
|
|
size for improved Traffic Flow Confidentiality. The padding defines the
|
|
minimum size of all ESP packets sent. The default value of
|
|
<literal>0</literal> disables TFC padding, the special value
|
|
<literal>mtu</literal> adds TFC padding to create a packet size equal to
|
|
the Path Maximum Transfer Unit.
|
|
'';
|
|
|
|
replay_window = mkIntParam 32 ''
|
|
IPsec replay window to configure for this CHILD_SA. Larger values than
|
|
the default of <literal>32</literal> are supported using the Netlink
|
|
backend only, a value of <literal>0</literal> disables IPsec replay
|
|
protection.
|
|
'';
|
|
|
|
hw_offload = mkEnumParam ["yes" "no" "auto"] "no" ''
|
|
Enable hardware offload for this CHILD_SA, if supported by the IPsec
|
|
implementation. The value <literal>yes</literal> enforces offloading
|
|
and the installation will fail if it's not supported by either kernel or
|
|
device. The value <literal>auto</literal> enables offloading, if it's
|
|
supported, but the installation does not fail otherwise.
|
|
'';
|
|
|
|
copy_df = mkYesNoParam yes ''
|
|
Whether to copy the DF bit to the outer IPv4 header in tunnel mode. This
|
|
effectively disables Path MTU discovery (PMTUD). Controlling this
|
|
behavior is not supported by all kernel interfaces.
|
|
'';
|
|
|
|
copy_ecn = mkYesNoParam yes ''
|
|
Whether to copy the ECN (Explicit Congestion Notification) header field
|
|
to/from the outer IP header in tunnel mode. Controlling this behavior is
|
|
not supported by all kernel interfaces.
|
|
'';
|
|
|
|
copy_dscp = mkEnumParam [ "out" "in" "yes" "no" ] "out" ''
|
|
Whether to copy the DSCP (Differentiated Services Field Codepoint)
|
|
header field to/from the outer IP header in tunnel mode. The value
|
|
<literal>out</literal> only copies the field from the inner to the outer
|
|
header, the value <literal>in</literal> does the opposite and only
|
|
copies the field from the outer to the inner header when decapsulating,
|
|
the value <literal>yes</literal> copies the field in both directions,
|
|
and the value <literal>no</literal> disables copying the field
|
|
altogether. Setting this to <literal>yes</literal> or
|
|
<literal>in</literal> could allow an attacker to adversely affect other
|
|
traffic at the receiver, which is why the default is
|
|
<literal>out</literal>. Controlling this behavior is not supported by
|
|
all kernel interfaces.
|
|
'';
|
|
|
|
start_action = mkEnumParam ["none" "trap" "start"] "none" ''
|
|
Action to perform after loading the configuration.
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
The default of <literal>none</literal> loads the connection only, which
|
|
then can be manually initiated or used as a responder configuration.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
The value <literal>trap</literal> installs a trap policy, which triggers
|
|
the tunnel as soon as matching traffic has been detected.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
The value <literal>start</literal> initiates the connection actively.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
When unloading or replacing a CHILD_SA configuration having a
|
|
<option>start_action</option> different from <literal>none</literal>,
|
|
the inverse action is performed. Configurations with
|
|
<literal>start</literal> get closed, while such with
|
|
<literal>trap</literal> get uninstalled.
|
|
'';
|
|
|
|
close_action = mkEnumParam ["none" "trap" "start"] "none" ''
|
|
Action to perform after a CHILD_SA gets closed by the peer.
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
The default of <literal>none</literal> does not take any action,
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>trap</literal> installs a trap policy for the CHILD_SA.
|
|
</para></listitem>
|
|
<listitem><para>
|
|
<literal>start</literal> tries to re-create the CHILD_SA.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
</para><para>
|
|
<option>close_action</option> does not provide any guarantee that the
|
|
CHILD_SA is kept alive. It acts on explicit close messages only, but not
|
|
on negotiation failures. Use trap policies to reliably re-create failed
|
|
CHILD_SAs.
|
|
'';
|
|
|
|
} ''
|
|
CHILD_SA configuration sub-section. Each connection definition may have
|
|
one or more sections in its <option>children</option> subsection. The
|
|
section name defines the name of the CHILD_SA configuration, which must be
|
|
unique within the connection (denoted <child> below).
|
|
'';
|
|
} ''
|
|
Section defining IKE connection configurations, each in its own subsection
|
|
with an arbitrary yet unique name
|
|
'';
|
|
|
|
secrets = let
|
|
mkEapXauthParams = mkPrefixedAttrsOfParams {
|
|
secret = mkOptionalStrParam ''
|
|
Value of the EAP/XAuth secret. It may either be an ASCII string, a hex
|
|
encoded string if it has a 0x prefix or a Base64 encoded string if it
|
|
has a 0s prefix in its value.
|
|
'';
|
|
|
|
id = mkPrefixedAttrsOfParam (mkOptionalStrParam "") ''
|
|
Identity the EAP/XAuth secret belongs to. Multiple unique identities may
|
|
be specified, each having an <literal>id</literal> prefix, if a secret
|
|
is shared between multiple users.
|
|
'';
|
|
|
|
} ''
|
|
EAP secret section for a specific secret. Each EAP secret is defined in a
|
|
unique section having the <literal>eap</literal> prefix. EAP secrets are
|
|
used for XAuth authentication as well.
|
|
'';
|
|
|
|
in {
|
|
|
|
eap = mkEapXauthParams;
|
|
xauth = mkEapXauthParams;
|
|
|
|
ntlm = mkPrefixedAttrsOfParams {
|
|
secret = mkOptionalStrParam ''
|
|
Value of the NTLM secret, which is the NT Hash of the actual secret,
|
|
that is, MD4(UTF-16LE(secret)). The resulting 16-byte value may either
|
|
be given as a hex encoded string with a 0x prefix or as a Base64 encoded
|
|
string with a 0s prefix.
|
|
'';
|
|
|
|
id = mkPrefixedAttrsOfParam (mkOptionalStrParam "") ''
|
|
Identity the NTLM secret belongs to. Multiple unique identities may be
|
|
specified, each having an id prefix, if a secret is shared between
|
|
multiple users.
|
|
'';
|
|
} ''
|
|
NTLM secret section for a specific secret. Each NTLM secret is defined in
|
|
a unique section having the <literal>ntlm</literal> prefix. NTLM secrets
|
|
may only be used for EAP-MSCHAPv2 authentication.
|
|
'';
|
|
|
|
ike = mkPrefixedAttrsOfParams {
|
|
secret = mkOptionalStrParam ''
|
|
Value of the IKE preshared secret. It may either be an ASCII string, a
|
|
hex encoded string if it has a 0x prefix or a Base64 encoded string if
|
|
it has a 0s prefix in its value.
|
|
'';
|
|
|
|
id = mkPrefixedAttrsOfParam (mkOptionalStrParam "") ''
|
|
IKE identity the IKE preshared secret belongs to. Multiple unique
|
|
identities may be specified, each having an <literal>id</literal>
|
|
prefix, if a secret is shared between multiple peers.
|
|
'';
|
|
} ''
|
|
IKE preshared secret section for a specific secret. Each IKE PSK is
|
|
defined in a unique section having the <literal>ike</literal> prefix.
|
|
'';
|
|
|
|
ppk = mkPrefixedAttrsOfParams {
|
|
secret = mkOptionalStrParam ''
|
|
Value of the PPK. It may either be an ASCII string, a hex encoded string
|
|
if it has a <literal>0x</literal> prefix or a Base64 encoded string if
|
|
it has a <literal>0s</literal> prefix in its value. Should have at least
|
|
256 bits of entropy for 128-bit security.
|
|
'';
|
|
|
|
id = mkPrefixedAttrsOfParam (mkOptionalStrParam "") ''
|
|
PPK identity the PPK belongs to. Multiple unique identities may be
|
|
specified, each having an <literal>id</literal> prefix, if a secret is
|
|
shared between multiple peers.
|
|
'';
|
|
} ''
|
|
Postquantum Preshared Key (PPK) section for a specific secret. Each PPK is
|
|
defined in a unique section having the <literal>ppk</literal> prefix.
|
|
'';
|
|
|
|
private = mkPrefixedAttrsOfParams {
|
|
file = mkOptionalStrParam ''
|
|
File name in the private folder for which this passphrase should be used.
|
|
'';
|
|
|
|
secret = mkOptionalStrParam ''
|
|
Value of decryption passphrase for private key.
|
|
'';
|
|
} ''
|
|
Private key decryption passphrase for a key in the
|
|
<literal>private</literal> folder.
|
|
'';
|
|
|
|
rsa = mkPrefixedAttrsOfParams {
|
|
file = mkOptionalStrParam ''
|
|
File name in the <literal>rsa</literal> folder for which this passphrase
|
|
should be used.
|
|
'';
|
|
secret = mkOptionalStrParam ''
|
|
Value of decryption passphrase for RSA key.
|
|
'';
|
|
} ''
|
|
Private key decryption passphrase for a key in the <literal>rsa</literal>
|
|
folder.
|
|
'';
|
|
|
|
ecdsa = mkPrefixedAttrsOfParams {
|
|
file = mkOptionalStrParam ''
|
|
File name in the <literal>ecdsa</literal> folder for which this
|
|
passphrase should be used.
|
|
'';
|
|
secret = mkOptionalStrParam ''
|
|
Value of decryption passphrase for ECDSA key.
|
|
'';
|
|
} ''
|
|
Private key decryption passphrase for a key in the
|
|
<literal>ecdsa</literal> folder.
|
|
'';
|
|
|
|
pkcs8 = mkPrefixedAttrsOfParams {
|
|
file = mkOptionalStrParam ''
|
|
File name in the <literal>pkcs8</literal> folder for which this
|
|
passphrase should be used.
|
|
'';
|
|
secret = mkOptionalStrParam ''
|
|
Value of decryption passphrase for PKCS#8 key.
|
|
'';
|
|
} ''
|
|
Private key decryption passphrase for a key in the
|
|
<literal>pkcs8</literal> folder.
|
|
'';
|
|
|
|
pkcs12 = mkPrefixedAttrsOfParams {
|
|
file = mkOptionalStrParam ''
|
|
File name in the <literal>pkcs12</literal> folder for which this
|
|
passphrase should be used.
|
|
'';
|
|
secret = mkOptionalStrParam ''
|
|
Value of decryption passphrase for PKCS#12 container.
|
|
'';
|
|
} ''
|
|
PKCS#12 decryption passphrase for a container in the
|
|
<literal>pkcs12</literal> folder.
|
|
'';
|
|
|
|
token = mkPrefixedAttrsOfParams {
|
|
handle = mkOptionalHexParam ''
|
|
Hex-encoded CKA_ID or handle of the private key on the token or TPM,
|
|
respectively.
|
|
'';
|
|
|
|
slot = mkOptionalIntParam ''
|
|
Optional slot number to access the token.
|
|
'';
|
|
|
|
module = mkOptionalStrParam ''
|
|
Optional PKCS#11 module name to access the token.
|
|
'';
|
|
|
|
pin = mkOptionalStrParam ''
|
|
Optional PIN required to access the key on the token. If none is
|
|
provided the user is prompted during an interactive
|
|
<literal>--load-creds</literal> call.
|
|
'';
|
|
} ''Definition for a private key that's stored on a token/smartcard/TPM.'';
|
|
|
|
};
|
|
|
|
pools = mkAttrsOfParams {
|
|
addrs = mkOptionalStrParam ''
|
|
Subnet or range defining addresses allocated in pool. Accepts a single
|
|
CIDR subnet defining the pool to allocate addresses from or an address
|
|
range (<from>-<to>). Pools must be unique and non-overlapping.
|
|
'';
|
|
|
|
dns = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
nbns = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
dhcp = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
netmask = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
server = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
subnet = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
split_include = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
split_exclude = mkCommaSepListParam [] "Address or CIDR subnets";
|
|
} ''
|
|
Section defining named pools. Named pools may be referenced by connections
|
|
with the pools option to assign virtual IPs and other configuration
|
|
attributes. Each pool must have a unique name (denoted <name> below).
|
|
'';
|
|
}
|