I have a Draytek Vigor 2600 Plus router, with multiple static IPs, I mapped the WAN IPs into local IPs without a problem.
Installed an NT4 server, I can access the home page using FQDN and ping the WAN IP on the same network without any problems.
If I tried to ping the DN or WAN IP from a different internet network, it will timed out, but strange enough I can type in the domain name, the home page will display.
The router has DoS, filters and firewall off, I cant figure out whats the cause of this, if the router is blocking external traffics, then I shouldnt be able to open the home page from a different broadband connection, if its not blocking, then I should be able to ping both the DN and IP.
Any one could help on where else I should look ?
ps. I installed OWA on the NT4 box and I can also access the ES55 from a different broadband connection, but cant seem to sent any emails from the NT4 server, comes back as can't route (sorry but not on the problem PCs right now). I suspect a DNS problem on this one, but could it also linked to the problems above ?