I have RouterBoard 750 & two ISP each 1Mbps, is it possible to get 2 Mbps with fail-over if yes then how to do this?
Pls. guide me
Search for pcc to distribute the connections. But one connection can go only thru one line so you can never get more than 1 mbit per one connection.
Most probably those are rules created by upnp. Disable it and you will not have any more dynamic nat rules. There are softs and devices who are designed to discover if there is upnp supported by the router and create rules at their need.