My b2evolution Version: 2.x

I've got an interesting problem, and I hope somebody could point me in the right direction to find a fix. I'm loosing all my "formatting" and blog structure and I think it's because I've got my web server behind a NAT firewall.

I run a couple of web sites with different domain names on an Debian apache 2 server with "virtual hosting". The web server is on a DMZ with its own subnet (192.168.2.0/24) that is seen to the internet as my sole fixed IP. My Linux-based firewall receives all http traffic (port 80) appearing at the single external IP and sends it to the server. This works just fine and provides some reasonable security.

My home computer is on a separate subnet, and has no trouble accessing the web server.

I set up b2evolution on this server, and everything seems to work fine from my internal network. I've got all the formatting (logos, headers, columns, etc), but when I view the blog page from outside my network, it looses all formatting and has only plain text in a single column.

I presume that the fact that my host name resolves to an internal address is somehow screwing me up. Can anybody suggest a fix?

TIA

Ref: http://www.NerdWorld.org/blog