I also have the same modem.
u will have to forward the ports for the modem.
The nat page is not accessible throught the modem page 192.168.1.1
The best solution for the port forwarding that i found that u have to run a script every time when the computer starts which forwards the ports.
The Telnet Scripting tool that I use is TST10.EXE, written by Albert Yale. It can be downloaded from
http://users.telenet.be/tontonzen/gg/TST10.zip
the script is
192.168.1.1 23
WAIT "Login: "
SEND "admin\m"
WAIT "Password: "
SEND "admin\m"
WAIT "-->"
SEND "console enable\m\m"
WAIT ">"
SEND "nat inbound add yoon-0 80/tcp 192.168.1.25\m"
WAIT ">"
SEND "nat inbound add yoon-0 52522/tcp 192.168.1.25\m"
WAIT ">"
SEND "nat inbound add yoon-0 52522/udp 192.168.1.25\m"
WAIT ">"
SEND "nat inbound add yoon-0 52523/tcp 192.168.1.25\m"
WAIT ">"
SEND "nat inbound add yoon-0 52523/udp 192.168.1.25\m"
WAIT ">"
SEND "nat inbound add yoon-0 52524/tcp 192.168.1.25\m"
WAIT ">"
SEND "nat inbound add yoon-0 52524/udp 192.168.1.25\m"
WAIT ">"
SEND "config save\m"
WAIT ">"
SEND "nat inbound list\m"
WAIT ">"
SEND "exit\m\m"
WAIT "-->"
SEND "user logout\m\m"
U can create a batch file with the following command and put this batch file in the startup folder so that it runs automatically.
tst10.exe /r:script.txt