feat(yate): add snmp monitoring

hosts/yate/configuration.nix

@@ -96,6 +96,7 @@
     enable = true;
     ruleset = let
         tcpPorts = lib.concatStringsSep ", " (map toString config.networking.firewall.allowedTCPPorts);
+        udpPorts = lib.concatStringsSep ", " (map toString config.networking.firewall.allowedUDPPorts);
     in ''
       table inet filter {
         chain input {
@@ -112,6 +113,7 @@
 
           tcp dport 22 accept
           tcp dport { ${tcpPorts} } accept
+          udp dport { ${udpPorts} } accept
 
           iif {vlan132, vlan133} accept
 

hosts/yate/voip.nix

@@ -70,8 +70,14 @@
       #  default = "yes";
       #};
     };
+    ysnmpagent = {
+      general.port = 161;
+      snmp_v2.ro_community = "yate";
+    };
   };
 
+  networking.firewall.allowedUDPPorts = [ 161 ];
+
   environment.systemPackages = with pkgs; [
     (writers.makePythonWriter python39 python39.pkgs "/bin/dect_claim" { libraries = [ python39.pkgs.python-yate ]; } (builtins.readFile ./dect_claim.py))
     (runCommand "yintro.slin" {} ''