[LandOfTheFreeHomeOfTheBrave]

If I remember correctly, the default login for the linksys router is username (leave blank) and password=admin. The IP address you gave is correct. Linksys has PDF docs for the router on their website.

[aquitaine]

The default lan ip for the linksys 192.168.1.1 is the default as set by the factory. Siemens may have changed this because the PC's on the LAN get their ip dynamically from the linksys.
So u verify which ip to use for from the web browser u need to verify the default gateway by using the DOS prompt ipconfig.

I beleive u r correct on the default password.

Just as a side, there is an option to disable linksys admininistration from the WAN side. So dont worry about getting hacked, assuming Siemens did set this value correctly.