mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-22 15:03:28 +00:00
86 lines
1.7 KiB
Bash
Executable File
86 lines
1.7 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
|
|
set -euo pipefail
|
|
|
|
# Detect if iptables or nftables-based firewall is used.
|
|
if [[ -e /etc/systemd/system/firewall.service ]]; then
|
|
BACKEND=iptables
|
|
elif [[ -e /etc/systemd/system/nftables.service ]]; then
|
|
BACKEND=nftables
|
|
else
|
|
echo "nixos-firewall-tool: cannot detect firewall backend" >&2
|
|
exit 1
|
|
fi
|
|
|
|
ip46tables() {
|
|
iptables -w "$@"
|
|
ip6tables -w "$@"
|
|
}
|
|
|
|
show_help() {
|
|
echo "nixos-firewall-tool"
|
|
echo ""
|
|
echo "Can temporarily manipulate the NixOS firewall"
|
|
echo ""
|
|
echo "Open TCP port:"
|
|
echo " nixos-firewall-tool open tcp 8888"
|
|
echo ""
|
|
echo "Show all firewall rules:"
|
|
echo " nixos-firewall-tool show"
|
|
echo ""
|
|
echo "Open UDP port:"
|
|
echo " nixos-firewall-tool open udp 51820"
|
|
echo ""
|
|
echo "Reset firewall configuration to system settings:"
|
|
echo " nixos-firewall-tool reset"
|
|
}
|
|
|
|
if [[ -z ${1+x} ]]; then
|
|
show_help
|
|
exit 1
|
|
fi
|
|
|
|
case $1 in
|
|
"open")
|
|
protocol="$2"
|
|
port="$3"
|
|
|
|
case $BACKEND in
|
|
iptables)
|
|
ip46tables -I nixos-fw -p "$protocol" --dport "$port" -j nixos-fw-accept
|
|
;;
|
|
nftables)
|
|
nft add element inet nixos-fw "temp-ports" "{ $protocol . $port }"
|
|
;;
|
|
esac
|
|
;;
|
|
"show")
|
|
case $BACKEND in
|
|
iptables)
|
|
ip46tables --numeric --list nixos-fw
|
|
;;
|
|
nftables)
|
|
nft list table inet nixos-fw
|
|
;;
|
|
esac
|
|
;;
|
|
"reset")
|
|
case $BACKEND in
|
|
iptables)
|
|
systemctl restart firewall.service
|
|
;;
|
|
nftables)
|
|
nft flush set inet nixos-fw "temp-ports"
|
|
;;
|
|
esac
|
|
;;
|
|
-h|--help|help)
|
|
show_help
|
|
exit 0
|
|
;;
|
|
*)
|
|
show_help
|
|
exit 1
|
|
;;
|
|
esac
|