tv/2configs/sshd.nix


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

with import ./lib;
{ config, ... }: let
  cfg.host = config.krebs.build.host;
in {
  services.openssh = {
    enable = true;
  };
  tv.iptables.input-internet-accept-tcp = singleton "ssh";
  tv.iptables.extra.nat.OUTPUT = [
    "-o lo -p tcp --dport 11423 -j REDIRECT --to-ports 22"
  ];
  tv.iptables.extra4.nat.PREROUTING =
    map
      (net: "-d ${net.ip4.addr} -p tcp --dport 22 -j ACCEPT")
      (filter (net: net.ip4 != null)
              [
                cfg.host.nets.retiolum
                cfg.host.nets.wiregrill
              ]);
  tv.iptables.extra6.nat.PREROUTING = [
    "-d ${cfg.host.nets.retiolum.ip6.addr} -p tcp --dport 22 -j ACCEPT"
    "-d ${cfg.host.nets.wiregrill.ip6.addr} -p tcp --dport 22 -j ACCEPT"
  ];
  tv.iptables.extra.nat.PREROUTING = [
    "-p tcp --dport 22 -j REDIRECT --to-ports 0"
    "-p tcp --dport 11423 -j REDIRECT --to-ports 22"
  ];
}