On Sat, 6 Jul 1996, Eric Woodward wrote:
I looked at this doing this about a year ago but the major stumbling block was that if ISPs share the authentication responsibility using distributed RADIUS, they have the capability of keeping each other's passwords for the user's that used the global access service.
This has changed slightly, now. We are able to use the "realm" concept and have the end-user travel to, say, ISP-B (with which end-user's ISP has reciprocity) and given that his login is joeblow, then he could login as: joeblow@isp-a and the TS would then relay to the default RADIUS server at which point that RADIUS server would ensure it had reciprocity with the "ISP-A" realm and then forward that authentication request onto ISP-A's RADIUS server. After being authenticated, the TS would then issue an IP and accounting would be sent off to the appropriate ISP(s). So, the only "secrets" that are shared are the md5 digest keys used between the RADIUS server and TS. Barry Barry James | Mikrotec Internet Services, Inc (AS3801) Sr Internet Engineer | 1001 Winchester Rd bjames@mis.net | Lexington KY 40505 http://www.mis.net/ | 606/225.1488