Retrieve "user-name" from assigned IP of dial-in users

[christds]

I'm developing a web application for ISPs. The users of this application will be the dial-in users of the ISP. I need to retrieve the "user-name" of the dial-in user by using it's assigned IP (I get it from the HTTP protocol when she/he interacts with my application). Do you know where this information (in most common ISP configurations and networks) is logged/kept? Is it on DHCP server of the ISP router, the AAA server, the syslog server??

Thanks in advance for your help.

Sotiris Christodoulou

[mfriedl]

Hello Sotiris,

its in depence what the ISP is using for Authentication. but normally they use Radius(AAA) and there you can catch the username.

regards Mike