Please help

I m using MT some times and I have issue about The dude.I have two networks in the different towns and i using the dude for monitoring.In the first town where I placed i can discover all MT routerbords wiht dude agent, but in the second city my network using NAT.How can I discover MT routerboards in the second city.
SORRY for my bad english

You can setup EoIP between Dude network server and second network NAT router.