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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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