I am completely stumped and don't have a great deal to go on so i am hopping that somebody can suggest what might be wrong.
I have been successfully running a DNS server and Webserver, they are both on separate machines behind a router. My domains nameservers point to the DNS server which contains the a records. The router sends all DNS traffic (coming in at port 53) to the DNS server and routes all HTTP traffic (ports 80 and 443) to the webserver.
Everything has been working fine for ages... until all of a sudden it didn't. Now, whenever i try to view any of the websites i host it just doesn't work. "The connection to the server was reset whilst the page was loading".
When i try to view the websites from inside the network, every single one of my domains points to the router.
The odd thing is, if i view the one website that is configured to use SSL from anywhere then it works so it seems to only be a port 80 issue.
I have recently installed SP2 on the webserver (Windows Server 2008), other than that i am pretty sure nothing else has changed. The NAT tables are all correct on the router.
I don't understand! Any suggestions would be greatly appreciated.
Answer
SOLVED: Very stupid problem, somehow the router had been reconfigured to allow for access to the control panel from the internet so it was clearly trying to take all port 80 traffic pointing to the external IP.
Thanks for all the help you have offered though!
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