Perhaps one of you experts can assist me with this problem: I've configured my 871W to get the LAN and wireless working without any problems. However, I'm now having trouble getting my WAN connection working. I've configured the WAN interface with the IP address from the ISP. I have the NAT translation from 192.168.69.0-192.168.69.255 to the first usable address in our IP block, which is 18.104.22.168(IP changed here for security reasons). They have given us a "block" of IPs, which ranges from x.x.x.110 to x.x.x.114. The first, is our actual address, x.x.x.110. The second is their gateway, x.x.x.111, or (according to them), the address of their ADTRAN router device, which is in front of ours on the the way to the Internet. I called them, and they stated that they do not have a NAT firewall in place on their router, and they are "just handing off the address to us". The Cisco device will replace a Linksys WRT54GL, which has a staic WAN IP of 22.214.171.124, and is using a gateway of 126.96.36.199. I'm not sure where to configure a gateway on the Cisco device, or if that's even possible. I asked the ISP if they have encountered a similar scenario, and they stated that most customers don't use sophisticted devices like Cisco, only devices like the Linksys router we currently have in place. They were little help except to clarify that they do not have a conflicting NAT in place on their router. I'm attaching my config. This was all done using the SDM. Any help is appreciated, thanks.