Is there any way to forward packets from network A to network B (just like a router) without changing source IP Address (and vice versa, from network B to network A) and also enforcing traffic shaping rules?
The solution should be implemented in FreeBSD.
I googled about traffic shaping in FreeBSD and found ALTQ but i am not sure whether it is possible to forwards packets with ALTQ
transparently or not.
If it's possible then it's likely that i could setup a network with a Squid server (for caching and more imporant logging user's download/upload) and ALTQ (or something else) to manage their bandwidth. So my network architecture will be:
Internet <==> SquidServer <==> TrafficshapingServer <==> LocalNetwork
But if TrafficShaping replaces SourceIP of packets with his IP Address, logs of Squid becomes useless. because Squid didn't know which packet is from which IP Address (all Squid see is TrafficShaping IPAddress)