Hi, I have an ISA 2006 firewall behind cisco router. On cisco router activate nat with 500 and 4500 udp translation to isa. The ISA ext. address is an private address. In other side there is an RV042. I want to setup site-to-site vpn connection betwen isa and linksys. After make the "proper" settings in rv042 log i see this error: We require peer to have ID 'CISCO_EXT_PUBLIC_ADDRESS', but peer declares 'ISA_EXT_private_ADDRESS' Anyone can help me how can i resolve this problem. Thanks.