Date: 2008apr15 OS: Linux Q. What's an alternate way to see network activity? A. Use lsof - which stands for List Open Files. Sounds weird, huh? But on Linux/Unix everything is a file -- even network connections! Here are some some uses. All TCP/IP connections:

lsof | grep TCP

All IPv6 connections:

lsof | grep IPv6

Or

lsof -i6

If you don't want any IPv6 running see my tip on disabling it: http://www.davekb.com/search.php?target=disable+IPv6 What's Apache doing:

lsof | grep httpd

(Lists files it has open and network connections - nice) lsof has many options. But I prefer simply grep-ing. If you aren't root some files will be unavailable.