IPPortCheck

Novell Cool Solutions: Cool Tool

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In Brief

Command line tool to test for alive (or listening) TCP ports.

Vitals

Posted:	22 Nov 2004
File Size:	765KB
License:	Free
Download:	/coolsolutions/tools/downloads/ipportcheck.exe
Publisher:	Bryan Keadle

Disclaimer

Please read the note from our friends in legal before using this file.

Details

Here's a handy tool I use all the time, handy for troubleshooting eDirectory/NetWare services, GroupWise MTA/POA ports, etc.

Often, you want to see if a particular port on a given host is open. Like "ping", it's nice to know if something is alive when you're trying to troubleshoot a possible communications problem. With IPPortCheck, you can effectively "ping" a given port on a give host. If you get an "alive" response, you know the communications channel is open.

I use this to test firewall configurations or if I can reach a particular service on a host.

PING is a nice tool to check to see if a particular host is alive, but, as an ICMP request, which often can be blocked across networks, it doesn't confirm necessarily that the host isn't up. IPPortCheck sends a TCP request to the target, and will respond to it if you know the specified port is allowed through.

SYNTAX:

IPPortCheck (host) (port)
    or
IPPortCheck host:port

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Reader Comments

• Would be much more useful if it allowed a range of ports to be scanned
• This is a convenient tool for helpdesk personel, to check if a service on a server is reachable for our clients. (They always forget the telnet syntax, and have trouble interpreting the results). It would be nice if it could also check UDP.
• nmap is better, works on Linux and Windows, but this will do in a pinch I guess.