Networking :: Possible to dial-in into DSL?

Hi out there!

I am an absolute newbie in linux, but I use DSL for about 6 month now because it's so simple and great working! But now I want to know if it is possible to open a connection from another computer via modem to get access to the DSL webserver (Monkey) or the ftp-server.

Why? Just for testing the dial-in of a settopbox with an mhp-application. Too complicated to describe.

Would be great if someone can help me!

Greetz from germany,

Mathes