Port Scan funktioniert nicht

Use this security tool as a conveinant portable app to check on open ports behind your corporate firewall via connection through the WiFi network or from the Internet through the cellular network.  This utility application lets you check what services are listening on a network and is useful for making sure no service ports are open that shouldn't be.  Port Scanning is a essential network utility for every IT professional and this is the best scanner available for your iOS device.  This app is a must have for every network/system administrator but simple enough for the non-professional to use and understand. * Ultra-Fast multi-threaded TCP port scanner for cellular or WiFi networks. * Quick scan for the most popular ports, does a scan within a few seconds. * Send scan results via email to save and record open port status. * Display common protocol used by each open port and allow connection if port protocol known. * Scan using Hostname/URL or IP address with history of last 50 hosts scanned. * Port scan parameters are fully adjustable to handle different network environments.