I have been playing with my cisco router for as long as I've had them.

I haven't found a good way to monitor traffic though. Sure, I can put a sniffer before/after the router... but I wanted to do it through the router. Is that possible?

I know I can show nat translations...

sh ip nat tran

But can I show the traffic/protocols in realtime?

I'm just using a cisco router, not a PIX.

On PIX, they have a show connections command... which is basically what the sh ip nat tran command does.. but I'm looking for something more informative.