diff --git a/desktop/app/src/server/comms/ServerController.tsx b/desktop/app/src/server/comms/ServerController.tsx
index 457512015..83e4caf73 100644
--- a/desktop/app/src/server/comms/ServerController.tsx
+++ b/desktop/app/src/server/comms/ServerController.tsx
@@ -125,10 +125,15 @@ class ServerController extends EventEmitter implements ServerEventsListener {
     this.initialized = this.certificateProvider
       .loadSecureServerConfig()
       .then((options) => {
+        console.log('[conn] secure server listening at port: ', secure);
         this.secureServer = createServer(secure, this, options);
         if (GK.get('flipper_websocket_server')) {
           const {secure: altSecure} =
             this.store.getState().application.altServerPorts;
+          console.log(
+            '[conn] secure server (ws) listening at port: ',
+            altSecure,
+          );
           this.altSecureServer = createServer(
             altSecure,
             this,
@@ -138,10 +143,15 @@ class ServerController extends EventEmitter implements ServerEventsListener {
         }
       })
       .then(() => {
+        console.log('[conn] insecure server listening at port: ', insecure);
         this.insecureServer = createServer(insecure, this);
         if (GK.get('flipper_websocket_server')) {
           const {insecure: altInsecure} =
             this.store.getState().application.altServerPorts;
+          console.log(
+            '[conn] insecure server (ws) listening at port: ',
+            altInsecure,
+          );
           this.altInsecureServer = createServer(
             altInsecure,
             this,
diff --git a/iOS/FlipperKit/FlipperClient.mm b/iOS/FlipperKit/FlipperClient.mm
index f19d22752..340b0701a 100644
--- a/iOS/FlipperKit/FlipperClient.mm
+++ b/iOS/FlipperKit/FlipperClient.mm
@@ -101,7 +101,9 @@ using WrapperPlugin = facebook::flipper::FlipperCppWrapperPlugin;
            sonarThread.getEventBase(),
            connectionThread.getEventBase(),
            [SKEnvironmentVariables getInsecurePort],
-           [SKEnvironmentVariables getSecurePort]});
+           [SKEnvironmentVariables getSecurePort],
+           [SKEnvironmentVariables getAltInsecurePort],
+           [SKEnvironmentVariables getAltSecurePort]});
       _cppClient = facebook::flipper::FlipperClient::instance();
 
       // To switch to a websocket provider, uncomment the line below.
diff --git a/iOS/FlipperKit/SKEnvironmentVariables.h b/iOS/FlipperKit/SKEnvironmentVariables.h
index 901b9ec83..9fd786b4f 100644
--- a/iOS/FlipperKit/SKEnvironmentVariables.h
+++ b/iOS/FlipperKit/SKEnvironmentVariables.h
@@ -14,6 +14,8 @@
 @interface SKEnvironmentVariables : NSObject
 + (int)getInsecurePort;
 + (int)getSecurePort;
++ (int)getAltInsecurePort;
++ (int)getAltSecurePort;
 @end
 
 #endif
diff --git a/iOS/FlipperKit/SKEnvironmentVariables.m b/iOS/FlipperKit/SKEnvironmentVariables.m
index fc692a44d..3dda22b38 100644
--- a/iOS/FlipperKit/SKEnvironmentVariables.m
+++ b/iOS/FlipperKit/SKEnvironmentVariables.m
@@ -12,6 +12,9 @@
 static int const DEFAULT_INSECURE_PORT = 8089;
 static int const DEFAULT_SECURE_PORT = 8088;
 
+static int const DEFAULT_ALT_INSECURE_PORT = 9089;
+static int const DEFAULT_ALT_SECURE_PORT = 9088;
+
 @implementation SKEnvironmentVariables
 
 + (int)getInsecurePort {
@@ -26,6 +29,18 @@ static int const DEFAULT_SECURE_PORT = 8088;
                                atIndex:1
                            withDefault:DEFAULT_SECURE_PORT];
 }
++ (int)getAltInsecurePort {
+  NSString* envVar = [self getFlipperAltPortsVariable];
+  return [self extractIntFromPropValue:envVar
+                               atIndex:0
+                           withDefault:DEFAULT_ALT_INSECURE_PORT];
+}
++ (int)getAltSecurePort {
+  NSString* envVar = [self getFlipperAltPortsVariable];
+  return [self extractIntFromPropValue:envVar
+                               atIndex:1
+                           withDefault:DEFAULT_ALT_SECURE_PORT];
+}
 + (int)extractIntFromPropValue:(NSString*)propValue
                        atIndex:(int)index
                    withDefault:(int)fallback {
@@ -45,6 +60,17 @@ static int const DEFAULT_SECURE_PORT = 8088;
 
   return value;
 }
++ (NSString*)getFlipperAltPortsVariable {
+  // Try to retrieve from environment first.
+  NSString* value = NSProcessInfo.processInfo.environment[@"FLIPPER_ALT_PORTS"];
+  // If empty, check defaults instead.
+  if ([value length] == 0) {
+    value = [[NSUserDefaults standardUserDefaults]
+        stringForKey:@"com.facebook.flipper.ports.alt"];
+  }
+
+  return value;
+}
 @end
 
 #endif
diff --git a/xplat/Flipper/FlipperInitConfig.h b/xplat/Flipper/FlipperInitConfig.h
index 378367a5d..08aab69ad 100644
--- a/xplat/Flipper/FlipperInitConfig.h
+++ b/xplat/Flipper/FlipperInitConfig.h
@@ -41,6 +41,8 @@ struct FlipperInitConfig {
 
   int insecurePort = 8089;
   int securePort = 8088;
+  int altInsecurePort = 9089;
+  int altSecurePort = 9088;
 };
 
 } // namespace flipper