[kwlug-disc] Two ethernet ports - 1 in, 1 out

[Insurance Squared Inc.]

If I'm running an asterisk server is it worth having two ethernet ports 
and setting it up so that inbound traffic comes in port A and outbound 
traffic goes out port B?  What about on a webserver? 

And where would I start to look into how to set that up?  I'm not sure 
if it's worth doing this, and if so, where to start reading on 'how'.