We have an DD-WRT router. Some servers, devices in our network must be accessable from outside. They are accessable on different ports (80, 143, ...).
I configured the router and added some rules under Port Forwarding but it doesn't works always.
Like example: From 1234 to 10.0.0.46:80 works From 1723 to 10.0.0.10:1723 works also From 40001 to 10.0.0.12:80 doesn't work
I checked my ISP and they aren't blocking any ports (for us)... I also rebooted the router after saving the settings..
In our network we have 1 server that is a DNS / DHCP. It has it's own firewall, but I thought it was specific for that server?
If I visit my fixed WAN ip (from inside), I can access all of the ports. (1234, 1723, 40001, ...). But if I want to connect from outside, 40001 doesn't ..
What could be the reason?