Telneting on the ISA server to the Ext NIC. (hoping to run the publishing rule from ext nic to internal exch srvr) Our adsl setup is also: Pub dns of 210.x.x.x into ADSL router, this is NAT'd to the ext nic of isa on 172 network. The isa should nat from 172.x network (ext nic) to 192.x network (int nic)?? Thanks Jim. KENT