port forwarding
how to check open port on remote systems?
Software/Hardware used:
Software/Hardware used:
ASKED:
June 5, 2010 9:16 AM
UPDATED:
June 7, 2010 3:12 PM
Answer Wiki:
You can use an application like Angry IP Scanner to scan the remote machine or network for open ports.
Here is the link:
<a href="http://www.angryip.org/w/Home">Angry IP Scanner</a>
Update:
This app scans for both TCP and UDP ports but there are tons of other out there, just have a quick google search.
To see all answers submitted to the Answer Wiki: View Answer History.
Or you can try with SuperScan application. A powerful connect-based TCP port scanner, pinger and hostname resolver.
nmap is an excellent tool for scanning ports on even firewalled systems – Use NMap to quickly scan a large subnet for MAC or IP addresses – even firewalled systems!
Also, if the port is a TCP port, simply use telnet to see if the port is open: telnet ip port. If the port is open, a blank screen will presented. If not open, then an error message will be returned.
Keep in mind that some port scanners are detected as malware by some antivirus programs.