It's my 1st post so here goes.
I am trying to setup a Cisco 877 router as a DNS Server. The same router has a Site to Site Tunnel setup and working between it and our main office located behind a Cisco PIX 515E.
877 (192.168.104.x) -> PIX (192.168.1.x)
I have enabled
IP DNS Server
IP name-server 192.168.1.242 192.168.1.245
Basically assigning my private DNS servers way does not work. I can ping the private DNS Servers from any PC at either end of the tunnel (192.168.104.x & 192.168.1.x). However I cannot ping the Private DNS Server IP addresses or anything at 192.168.1.x from IOS at the remote side.
Cut a long story short, there is a perfectly good reason I am trying to use my private DNS Servers as Name servers, but I cannot figure out why I cannot ping the devices or anything else at the end of the tunnel from the router itself.
Is it because the traffic is originating from the Dialer interface, and not VLAN1?
I have attached a sample copy of my config, hopefully somebody can advise where I'm going wrong!