By Bryan Keadle
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.
IPPortCheck (host) (port) or IPPortCheck host:port
Disclaimer: As with everything else at Cool Solutions, this content is definitely not supported by Novell (so don't even think of calling Support if you try something and it blows up).
It was contributed by a community member and is published "as is." It seems to have worked for at least one person, and might work for you. But please be sure to test, test, test before you do anything drastic with it.