Re: Is NAT must in Checkpoint Yes, NAT is not a "MUST" only used as required. As long as both target machine and source machine can route the traffic/packets back to the Gateway, i.e. both default gateway of two testing machines are pointed to the firewall in your testing environment, and the Gateway have the "state" information of the "request" packet and it can be routed back to the source. That's the concept of "Stateful Inspection Firewall". |