hosts/kay,lia/sshfwd: init

1 files changed, 28 insertions, 0 deletions

diff --git a/hosts/kay/modules/sshfwd.nix b/hosts/kay/modules/sshfwd.nix
new file mode 100644
index 0000000..0f0d3c3
--- /dev/null
+++ b/hosts/kay/modules/sshfwd.nix
@@ -0,0 +1,28 @@
+{ ... }: let
+  group = "sshfwd";
+in {
+  networking.firewall.allowedTCPPorts = [ 2222 ];
+
+  users = {
+    groups.${group}.members = [];
+
+    users."lia" = {
+      inherit group;
+      isSystemUser = true;
+
+      openssh.authorizedKeys.keys
+        = [ "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAe7fJlh9L+9JSq0+hK7jNZjszmZqNXwzqcZ+zx0yJyU lia" ];
+    };
+  };
+
+  services.openssh.extraConfig  = ''
+    Match Group ${group}
+    ForceCommand echo 'this account is only usable for forwarding'
+    PermitTunnel no
+    AllowAgentForwarding no
+    X11Forwarding no
+
+    AllowTcpForwarding yes
+    GatewayPorts yes
+  '';
+}