What can you do with a second Ethernet port?

linux.com

3 pointshiteshiitk2 comments

Fun, but if you have a managed switch, there are some even more interesting things you can do, like bandwidth monitoring:

And realtime traffic stats:

If you run SIP on your network, you can capture call setup information to debug phone issues:

And even extract RTP audio streams to investigate call quality issues:

yup. another handy tool is ngrep: http://ngrep.sourceforge.net/

for app-level protocol stats and/or high-end situations i'd attach an extrahop product: http://www.extrahop.com/products/