Is there a way to find what ohter members are sending through the network?

Question

I have a small network with everything being sent recieved through a router, is there a way to find out what others are doing/have done?

Answer 1

There are hardware devices that can monitor network traffic, these are typically pricey devices that will also do traffic management for you.

You may be able to get a software package that can be installed on a client computer to monitor the network as well, but in a switched network you do not see all traffic, just unicast and broadcast traffic.  So getting the client to "see" all the network traffic can be tricky.

So, yes, you can, but it's not a trivial thing to do.