My next question to you is ,
Do you have a DSL router or DSL bridge?
This depends on ISP and customers preference.

Im assuming you have residential DSL where your ISP
provides you with a DHCP dynamic address versus a static one.


I also forgot to ask you before, how did you know what IP to scan for?


Because this is the case you can easily figure out what type of DTE
device you have, check the IP configs of your PC, if it is a public address then
your DSL Modem is most likely a bridge, and if its a private address then it is a router..

If your not sure which is which, any address other than the following means it is public
10.x.x.x
172.16.x.x-172.31.x.x
192.168.x.x

P.S.
Sorry its late and havent slept for 2 days, power outage kept me busy working with clients..
the statement

"I also forgot to ask you before, how did you know what IP to scan for? "
shouldof been ate end of reply not in middle ....