UNIX for Advanced & Expert Users

Hi there!

I've been given a box that works as a DSL gateway/firewall running Extendnet 4000. Now, when logging in to the box through the web interface using default login (admin/admin) everything is fine. When I log in locally though, a wierd thing happens. My login seems to be successful, because for just a moment I see the last login information, but after that it logs out by itself. It seems that there is a shell script somewhere that gets activated once I log in and gives an exit command.
Anyone knows where can I change it so I'd be able to log in locally? I'm not sure if thats how Extendnet is set up by default, or was it someone else who managed that box before.
There's not much info on this system on the web so any help is greatly appreciated!
TIA!

According to the documentation, there is only a GUI interface to the product.

See the Quick Setup Guide and the install FAQ at Extended Systems

About the only info I found relative to really answering your question - although it mentions in one of the knowledge base posts that the system is running linux. See Reserved users

And according to their Tech Support, the answer to your question is no.

Note: Even though I did not have a Extendnet 4000 or any support, they still answered the question. Sometimes it's worth it to try.