diff --git a/db/patch-add-gamedig-given-port.sql b/db/patch-add-gamedig-given-port.sql
new file mode 100644
index 000000000..897a9c72f
--- /dev/null
+++ b/db/patch-add-gamedig-given-port.sql
@@ -0,0 +1,7 @@
+-- You should not modify if this have pushed to Github, unless it does serious wrong with the db.
+BEGIN TRANSACTION;
+
+ALTER TABLE monitor
+    ADD gamedig_given_port_only BOOLEAN default 1 not null;
+
+COMMIT;
diff --git a/server/database.js b/server/database.js
index ed4e4d1b1..c00f950be 100644
--- a/server/database.js
+++ b/server/database.js
@@ -80,6 +80,7 @@ class Database {
         "patch-add-certificate-expiry-status-page.sql": true,
         "patch-monitor-oauth-cc.sql": true,
         "patch-add-timeout-monitor.sql": true,
+        "patch-add-gamedig-given-port.sql": true,
     };
 
     /**
diff --git a/server/model/monitor.js b/server/model/monitor.js
index 152a2c72a..5b0481fdb 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -135,6 +135,7 @@ class Monitor extends BeanModel {
             radiusCalledStationId: this.radiusCalledStationId,
             radiusCallingStationId: this.radiusCallingStationId,
             game: this.game,
+            gamedigGivenPortOnly: this.getGameDigGivenPortOnly(),
             httpBodyEncoding: this.httpBodyEncoding,
             jsonPath: this.jsonPath,
             expectedValue: this.expectedValue,
@@ -280,6 +281,10 @@ class Monitor extends BeanModel {
         return JSON.parse(this.accepted_statuscodes_json);
     }
 
+    getGameDigGivenPortOnly() {
+        return Boolean(this.gamedigGivenPortOnly);
+    }
+
     /**
      * Start monitor
      * @param {Server} io Socket server instance
@@ -687,7 +692,7 @@ class Monitor extends BeanModel {
                             type: this.game,
                             host: this.hostname,
                             port: this.port,
-                            givenPortOnly: true,
+                            givenPortOnly: this.getGameDigGivenPortOnly(),
                         });
 
                         bean.msg = state.name;
diff --git a/server/server.js b/server/server.js
index da3fb5ba1..d2af1cf41 100644
--- a/server/server.js
+++ b/server/server.js
@@ -775,6 +775,7 @@ let needSetup = false;
                 bean.kafkaProducerAllowAutoTopicCreation = monitor.kafkaProducerAllowAutoTopicCreation;
                 bean.kafkaProducerSaslOptions = JSON.stringify(monitor.kafkaProducerSaslOptions);
                 bean.kafkaProducerMessage = monitor.kafkaProducerMessage;
+                bean.gamedigGivenPortOnly = monitor.gamedigGivenPortOnly;
 
                 bean.validate();
 
diff --git a/src/lang/en.json b/src/lang/en.json
index f093af501..772e57299 100644
--- a/src/lang/en.json
+++ b/src/lang/en.json
@@ -804,5 +804,7 @@
     "nostrRecipients": "Recipients Public Keys (npub)",
     "nostrRecipientsHelp": "npub format, one per line",
     "showCertificateExpiry": "Show Certificate Expiry",
-    "noOrBadCertificate": "No/Bad Certificate"
+    "noOrBadCertificate": "No/Bad Certificate",
+    "gamedigGuessPort": "Gamedig: Guess Port",
+    "gamedigGuessPortDescription": "The port used by Valve Server Query Protocol may be different from the client port. Try this if the monitor cannot connect to your server."
 }
diff --git a/src/pages/EditMonitor.vue b/src/pages/EditMonitor.vue
index 0e1faf372..bc98741b5 100644
--- a/src/pages/EditMonitor.vue
+++ b/src/pages/EditMonitor.vue
@@ -455,6 +455,16 @@
                                 </div>
                             </div>
 
+                            <div v-if="monitor.type === 'gamedig'" class="my-3 form-check">
+                                <input id="gamedig-guess-port" v-model="monitor.gamedigGivenPortOnly" :true-value="false" :false-value="true" class="form-check-input" type="checkbox">
+                                <label class="form-check-label" for="gamedig-guess-port">
+                                    {{ $t("gamedigGuessPort") }}
+                                </label>
+                                <div class="form-text">
+                                    {{ $t("gamedigGuessPortDescription") }}
+                                </div>
+                            </div>
+
                             <!-- Ping packet size -->
                             <div v-if="monitor.type === 'ping'" class="my-3">
                                 <label for="packet-size" class="form-label">{{ $t("Packet Size") }}</label>
@@ -870,6 +880,7 @@ const monitorDefaults = {
     kafkaProducerSaslOptions: {
         mechanism: "None",
     },
+    gamedigGivenPortOnly: true,
 };
 
 export default {