diff --git a/hosts/yate-dialup/configuration.nix b/hosts/yate-dialup/configuration.nix
index fd6b328..8e603aa 100644
--- a/hosts/yate-dialup/configuration.nix
+++ b/hosts/yate-dialup/configuration.nix
@@ -40,6 +40,7 @@
     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 {
@@ -55,6 +56,7 @@
 
           tcp dport 22 accept
           tcp dport { ${tcpPorts} } accept
+          udp dport { ${udpPorts} } accept
 
           ip saddr { 10.42.10.6, 217.10.68.150 } accept
           ip6 saddr { 2a01:4f8:1c0c:8221::6, 2001:ab7::0/64 } accept
diff --git a/hosts/yate-dialup/voip.nix b/hosts/yate-dialup/voip.nix
index 1d6a7e4..2b69a1c 100644
--- a/hosts/yate-dialup/voip.nix
+++ b/hosts/yate-dialup/voip.nix
@@ -15,9 +15,15 @@
       ysipchan.general = {
         ignorevia = "yes";
       };
+      ysnmpagent = {
+        general.port = 161;
+        snmp_v2.ro_community = "yate";
+      };
     };
   };
 
+  networking.firewall.allowedUDPPorts = [ 161 ];
+
   sops.secrets.sipgate_password = {
     owner = "yate";
     restartUnits = [ "yate.service" ];
diff --git a/hosts/yate/configuration.nix b/hosts/yate/configuration.nix
index 5e1f8a6..cae704a 100644
--- a/hosts/yate/configuration.nix
+++ b/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
 
diff --git a/hosts/yate/voip.nix b/hosts/yate/voip.nix
index bce76a8..dcc53e4 100644
--- a/hosts/yate/voip.nix
+++ b/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" {} ''