How to have both NAT and Non-NAT on same board

RouterOS General
1

Hi,

I have a RB 751 configured as such.

Ether 1 WAN uplink with a public /30 for ptp back to our aggregation router

Ether 5 inside network, needs NAT to outside WAN IP

Ether 4 inside network with PUBLIC IP subnet. This subnet is statically routed to the RB’s WAN via our aggregation router.

Issue is that traffic originating on Ether 4 is still NAT’d to the WAN IP. I need it to be on the /27 we have on Ether4.

How do I do this?

Many thanks

2

Check your NAT rule, and make sure that it is only NATing src addresses in the private block.