ACS URL?

[rvg90]

Hello i am using a D-Link 2730u, was trying to change the username and password for the router but it keeps saying that ACS URL is required, there is a place where i can put one but even after goggling it for a bit i didn't understand what should i put in there?

 

[hang-the-9]

Are you actually in the router config page? Does not sound like it from that message.

This is what ACS is http://www.cisco.com/en/US/products/sw/secursw/ps2086/products_tech_note09186a00808908e6.shtml