We are transitioning to a new ISP. I want to setup the second ISP while the first is still in place - until we can test everything, and get DNS resolution using the new host names.
1-Added IP Addresses of new ISP and selected interface of ISP2
2-Created a Mangle prerouting for Routing Mark for testing from my IP only.
3-Added default IP Route and selected the routing mark from step 2
4-Added Source NAT setting the out interface, routing mark and "to address" using one of the public ip's on WAN2.
At this point, I can surf the webs and whatsmyip shows the new ISP IP Address
Now - I've added the NAT rules for inbound traffic (internal services)... and for them to work, I add a Mangle prerouting rule.
But when I do this - the old IP address on ISP1 no longer responds to requests.
So - how do I get both ISP1 and ISP2 to respond to requests while we are setting up the router and testing... and of course, waiting for DNS resolution to update.
Thanks in advance for the assistance. I did not initially program this device so I am stumbling along.
Oh and to mention - we are using the Mikrotik VPN feature too for L2TP/ipSEC to connect to our Remote Desktop.