I've got a small office behind an SMC Barricade. I'm having it do DHCP and NAT. It's been working fine, but recently it has stopped forwarding packets from our internal Web server (Win2k, IIS 5). It is set to pass incoming HTTP requests to the Web server, and I can access the Web server from outside the network.
However, the Web server can't see anything outside the network. I can ping the internal interface on the Barricade and other computers inside the network, but I cannot ping the external interface on the Barricade or anything on the Internet. I'm pinging with IP address (I can't use a domain name, since we're using our ISP's DNS servers, which this poor server can't see).
Any idea what's causing this?