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Re: task and port number?



 Scott Ehrlich wrote: 
> On a Linux system, if a program claims that a port is in use (say I 
> want to install a web server on port 80, but the web server claims 
> port 80 is already in use, and a ps auwx doesn't show/claim a web 
> server is running), is there a program that can tell me what 
> application is using the port? 
> 
> Yes, nmap will show ports, but the apps it shows are part of its own 
> built-in database or /etc/services, so the app report isn't accurate. 
> 
> netstat -a will show apps and their PIDs, then later what ports are 
> open, but no direct port <-> app mapping. 
> 
> Maybe there is a compilation of ssh server designed to listen on port 
> 65530, and the daemon name is something I wouldn't expect, or it is 
> invoked by some other application. 
> 
> What tool can I use for real-time port <-> app mapping? 
> 
> Thanks. 
> 
> Scott 
> 


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