From b17cd6133b92b9f936ee83f86bb8ff8f54e9565d Mon Sep 17 00:00:00 2001 From: tv Date: Fri, 9 Dec 2022 18:07:20 +0100 Subject: ponte: modify internet-facing SSH port --- krebs/1systems/ponte/config.nix | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/krebs/1systems/ponte/config.nix b/krebs/1systems/ponte/config.nix index f896c507..2f55995c 100644 --- a/krebs/1systems/ponte/config.nix +++ b/krebs/1systems/ponte/config.nix @@ -11,6 +11,21 @@ networking.firewall.logRefusedConnections = false; networking.firewall.logRefusedUnicastsOnly = false; + # Move Internet-facing SSH port to reduce logspam. + networking.firewall.extraCommands = let + host = config.krebs.build.host; + in /* sh */ '' + iptables -t nat -A OUTPUT -o lo -p tcp --dport 11423 -j REDIRECT --to-ports 22 + iptables -t nat -A PREROUTING -p tcp --dport 11423 -j REDIRECT --to-ports 22 + iptables -t nat -A PREROUTING -d ${host.nets.retiolum.ip4.addr} -p tcp --dport 22 -j ACCEPT + iptables -t nat -A PREROUTING -p tcp --dport 22 -j REDIRECT --to-ports 0 + + ip6tables -t nat -A OUTPUT -o lo -p tcp --dport 11423 -j REDIRECT --to-ports 22 + ip6tables -t nat -A PREROUTING -p tcp --dport 11423 -j REDIRECT --to-ports 22 + ip6tables -t nat -A PREROUTING -d ${host.nets.retiolum.ip6.addr} -p tcp --dport 22 -j ACCEPT + ip6tables -t nat -A PREROUTING -p tcp --dport 22 -j REDIRECT --to-ports 0 + ''; + krebs.build.host = config.krebs.hosts.ponte; krebs.pages.enable = true; -- cgit v1.2.3