diff --git a/.gitignore b/.gitignore
index 643c7c1..00a266a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -107,3 +107,5 @@ log/**
 cache/**
 
 dev
+
+settings.json
\ No newline at end of file
diff --git a/settings.sample.json b/settings.sample.json
index f096550..4c29f8d 100755
--- a/settings.sample.json
+++ b/settings.sample.json
@@ -2,6 +2,8 @@
   "client_secret": "nosenpaithisisoursecret",
   "client_hostname": "0.0.0.0", // "0.0.0.0" is the default and binds to everything
   "client_port": 443, // 443 is recommended if possible
+  "client_external_port": 0,   //443 is recommended; This port will be send to mdah-backend.
+                               //You need to forward this to the client_port in your router; This is optional
   "threads": 16,
   "graceful_shutdown_wait_seconds": 60, // Time from graceful shutdown start to force quit
                                         // This rounds down to 15-second increments
diff --git a/src/main/kotlin/mdnet/base/ServerHandler.kt b/src/main/kotlin/mdnet/base/ServerHandler.kt
index 7e132d0..a7f748e 100644
--- a/src/main/kotlin/mdnet/base/ServerHandler.kt
+++ b/src/main/kotlin/mdnet/base/ServerHandler.kt
@@ -60,7 +60,13 @@ class ServerHandler(private val settings: ClientSettings) {
     private fun getPingParams(tlsCreatedAt: String? = null): Map<String, Any> =
         mapOf<String, Any>(
             "secret" to settings.clientSecret,
-            "port" to settings.clientPort,
+            "port" to let {
+                if (settings.clientExternalPort != 0) {
+                    settings.clientExternalPort
+                } else {
+                    settings.clientPort
+                }
+            },
             "disk_space" to settings.maxCacheSizeInMebibytes * 1024 * 1024,
             "network_speed" to settings.maxKilobitsPerSecond * 1000 / 8,
             "build_version" to Constants.CLIENT_BUILD
@@ -107,5 +113,6 @@ class ServerHandler(private val settings: ClientSettings) {
         private val STRING_ANY_MAP_LENS = Body.auto<Map<String, Any>>().toLens()
         private val SERVER_SETTINGS_LENS = Body.auto<ServerSettings>().toLens()
         private const val SERVER_ADDRESS = "https://api.mangadex.network/"
+        //private const val SERVER_ADDRESS = "https://mangadex-test.net/"
     }
 }
diff --git a/src/main/kotlin/mdnet/base/settings/ClientSettings.kt b/src/main/kotlin/mdnet/base/settings/ClientSettings.kt
index 771dc6c..9fe9d11 100644
--- a/src/main/kotlin/mdnet/base/settings/ClientSettings.kt
+++ b/src/main/kotlin/mdnet/base/settings/ClientSettings.kt
@@ -30,6 +30,7 @@ data class ClientSettings(
     val maxKilobitsPerSecond: Long = 0,
     val clientHostname: String = "0.0.0.0",
     val clientPort: Int = 443,
+    val clientExternalPort: Int = 0,
     @field:Secret val clientSecret: String = "PASTE-YOUR-SECRET-HERE",
     val threads: Int = 4,
     val gracefulShutdownWaitSeconds: Int = 60,