diff --git a/app/Actions/Proxy/CheckProxy.php b/app/Actions/Proxy/CheckProxy.php
index 6c8dd5234..27608547a 100644
--- a/app/Actions/Proxy/CheckProxy.php
+++ b/app/Actions/Proxy/CheckProxy.php
@@ -30,10 +30,6 @@ class CheckProxy
         if (is_null($proxyType) || $proxyType === 'NONE' || $server->proxy->force_stop) {
             return false;
         }
-        ['uptime' => $uptime, 'error' => $error] = $server->validateConnection();
-        if (! $uptime) {
-            throw new \Exception($error);
-        }
         if (! $server->isProxyShouldRun()) {
             if ($fromUI) {
                 throw new \Exception('Proxy should not run. You selected the Custom Proxy.');
@@ -68,6 +64,38 @@ class CheckProxy
 
             $portsToCheck = ['80', '443'];
 
+            foreach ($portsToCheck as $port) {
+                // Try multiple methods to check port availability
+                $commands = [
+                    // Method 1: Check /proc/net/tcp directly (convert port to hex)
+                    "cat /proc/net/tcp | grep -q '00000000:".str_pad(dechex($port), 4, '0', STR_PAD_LEFT)."'",
+                    // Method 2: Use ss command (modern alternative to netstat)
+                    "ss -tuln | grep -q ':$port '",
+                    // Method 3: Use lsof if available
+                    "lsof -i :$port >/dev/null 2>&1",
+                    // Method 4: Use fuser if available
+                    "fuser $port/tcp >/dev/null 2>&1",
+                ];
+
+                $portInUse = false;
+                foreach ($commands as $command) {
+                    try {
+                        instant_remote_process([$command], $server);
+                        $portInUse = true;
+                        break;
+                    } catch (\Throwable $e) {
+
+                        continue;
+                    }
+                }
+                if ($portInUse) {
+                    if ($fromUI) {
+                        throw new \Exception("Port $port is in use.<br>You must stop the process using this port.<br><br>Docs: <a target='_blank' class='dark:text-white hover:underline' href='https://coolify.io/docs'>https://coolify.io/docs</a><br>Discord: <a target='_blank' class='dark:text-white hover:underline' href='https://coolify.io/discord'>https://coolify.io/discord</a>");
+                    } else {
+                        return false;
+                    }
+                }
+            }
             try {
                 if ($server->proxyType() !== ProxyTypes::NONE->value) {
                     $proxyCompose = CheckConfiguration::run($server);
@@ -94,16 +122,6 @@ class CheckProxy
             if (count($portsToCheck) === 0) {
                 return false;
             }
-            foreach ($portsToCheck as $port) {
-                $connection = @fsockopen($ip, $port);
-                if (is_resource($connection) && fclose($connection)) {
-                    if ($fromUI) {
-                        throw new \Exception("Port $port is in use.<br>You must stop the process using this port.<br>Docs: <a target='_blank' href='https://coolify.io/docs'>https://coolify.io/docs</a><br>Discord: <a target='_blank' href='https://coollabs.io/discord'>https://coollabs.io/discord</a>");
-                    } else {
-                        return false;
-                    }
-                }
-            }
 
             return true;
         }