Thanks first of all,
I have a small problem with nat, I have configured a router with public ip rb1000 65.58.XX.XX/24 ether1 on, I use the public ip 65.58.XX.10 to get the ip 192.168.1.20 on ether4, someone could be so kind as to tell me how?
the eth1 and eth2 are not bridges.
Thanks infinitre.

http://wiki.mikrotik.com/wiki/Manual:IP ... c_examples

Simply fantastic....
Thx.