diff options
Diffstat (limited to 'nixos/modules/services/networking/nat.nix')
-rw-r--r-- | nixos/modules/services/networking/nat.nix | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/nixos/modules/services/networking/nat.nix b/nixos/modules/services/networking/nat.nix index f35b0f68e3efd..9d163e60d5eaf 100644 --- a/nixos/modules/services/networking/nat.nix +++ b/nixos/modules/services/networking/nat.nix @@ -12,9 +12,6 @@ let dest = if cfg.externalIP == null then "-j MASQUERADE" else "-j SNAT --to-source ${cfg.externalIP}"; - externalInterfaceFilter = param: - optionalString (cfg.externalInterface != null) "${param} ${cfg.externalInterface}"; - flushNat = '' iptables -w -t nat -D PREROUTING -j nixos-nat-pre 2>/dev/null|| true iptables -w -t nat -F nixos-nat-pre 2>/dev/null || true @@ -39,20 +36,19 @@ let # NAT the marked packets. ${optionalString (cfg.internalInterfaces != []) '' iptables -w -t nat -A nixos-nat-post -m mark --mark 1 \ - ${externalInterfaceFilter "-o"} ${dest} + -o ${cfg.externalInterface} ${dest} ''} # NAT packets coming from the internal IPs. ${concatMapStrings (range: '' iptables -w -t nat -A nixos-nat-post \ - -s '${range}' \! -d '${range}' - ${externalInterfaceFilter "-o"} ${dest} + -s '${range}' -o ${cfg.externalInterface} ${dest} '') cfg.internalIPs} # NAT from external ports to internal ports. ${concatMapStrings (fwd: '' iptables -w -t nat -A nixos-nat-pre \ - ${externalInterfaceFilter "-i"} -p tcp \ + -i ${cfg.externalInterface} -p tcp \ --dport ${builtins.toString fwd.sourcePort} \ -j DNAT --to-destination ${fwd.destination} '') cfg.forwardPorts} @@ -104,8 +100,7 @@ in }; networking.nat.externalInterface = mkOption { - type = types.nullOr types.str; - default = null; + type = types.str; example = "eth1"; description = '' |