Do i need NAT if gateway is on the same subnet?

RouterOS General
1

mikrotik.png

This is my scenario.
The Mikrotik router is the DHCP server and the default gateway for client computers.
Then he forwards the traffic to the adsl/router which is on the same network as the client pc-s.
Do i need to have Nat(masquarade) on Mikrotik router (aswell) or not?


Thanks

2

By that setup - no you do not need NAT, as the ADSL router will do NAT for you. You could even change your Mikrotik’s DHCP settings to give the ADSL router as the default gateway anyway (rather than traffic HAVING to go through the Mikrotik)

However, if your ADSL router is residential grade / crappy, then you may be better placing the ADSL router in bridge mode and allowing the Mikrotik to do the PPPoE and NAT.

3

ok. Thank you.
Yes I use the Mikrotik router in-between, just so that i can have some better monitoring of who is connected and the traffic… etc.