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Troubleshooting Windows Firewall in Microsoft Windows XP Service Pack 2

Links to 30 Word document which is fairly good.
The WF can allow exceptions either based on program (it will open any ports a specified program requests) or based on TCP/UDP port.

There is a new option for netstat.
-b will display the set of components by file name that are listening on each open TCP and UDP port

e.g.

netstat -anb

This is hmm vaguely useful sometimes. Mostly for ports opened by programs.
For the operating system ports it's not particularly useful.
If I don't know what port 1900 is for, telling me that WS2_32.dll, ssdpsrv.dll, ADVAPI32.dll and kernel32.dll were involved with opening it probably still doesn't greatly enlighten me.

It's nice that in the 21st century our most popular operating system still uses 8.3 filenames for all of its core components.

Link from BroadbandReports Security Forum.

Link added to the Built-in Windows Firewalls section of my broadband security page. posted by Richard at 06:44 / permalink (post) | permalink (numeric)