Routing issue with NAT

[growse]

I've got an issue with my route (Cisco 837) and getting at the external ips from inside the nat.

I've got a block of 5 usable public ips, and ports from these are natted to various internal ips in the 192.168.0.0/24 network. I have dns names set up which map to those external ips, so I can access the servers from the internet. However, if I'm inside the private network, I can't connect to the public ip and port. I can access it on the relavent private ip, but the public ip doesn't route there for some reason.

For example, if I forward port 80 on public ip 88.96.111.10 to 192.168.0.4 port 80, then I can't connect to 88.96.111.10 port 80 from inside the private network.

I'm guessing it's a nat issue, as I can use ipv6, which isn't natted, to access the servers. But then there isn't the concept of a "public" and "private" ip for that. Anyone know what I can do to enable this?

 

[growse]

i'm trying to understand what your trying to achieve by going out and back in again?

can you post a sanitised 'show run' from the router?

I'm trying to achieve the scenario where I have a bunch of DNS names that are pointing at public IP addresses that are also usable from inside the private network. Can't get at the router config at work, so might post tonight.

I'll look up NAT loopback, but I sense it might just be easier to set up my own internal DNS.