Unable to login Asus RT N66U need port forward info

[Skipholiday]

Router is at a business and they do not have the login password. (default did not work) They are switching from Otelco dsl to Charter cable. They are running a web and a data server as well as a camera surveillance system and a shared network printer. . I can reset the router but is there a way to find the ports that I need to forward in case UPNP does not work for them all.

If I can get all the port forward information Im good, is there a way to get it without logging into the router?

Thanks in advance.
Any help is much appreciated
Terry

 

[RMerlin]

Router is at a business and they do not have the login password. (default did not work) They are switching from Otelco dsl to Charter cable. They are running a web and a data server as well as a camera surveillance system and a shared network printer. . I can reset the router but is there a way to find the ports that I need to forward in case UPNP does not work for them all.

If I can get all the port forward information Im good, is there a way to get it without logging into the router?

Thanks in advance.
Any help is much appreciated
Terry

Run a portscan from the WAN side.