Win2000 RAS server stopped authenticating users...PLEASE HELP

[Kevin Matthews]

I have a Windows2000 SP4 server acting as a RAS server on our NT4
domain.

Until about a month ago, it worked great. The only changes made to
the machine have been moving from SP3 to SP4 and all the recent MS
hotfixes.

Anyhow, it now will not authenticate users. I have full IAS logging
turned on and I can see that at the time that it stopped working it
also stopped logging the usernames of attempted logins.

This has been more than frustrating. I have deleted the RAS server
and reconfigured it...but with no luck.

The clients receive the message "Error 721 the remote computer is not
responding", but I can't get it to respond. All clients are 2000 or
XP and I have the server and clients set to use MS CHAP or MS CHAP2
over PPTP.

What I don't get is that it was working fine...now it doesn't...

Any ideas?

Thanks,

Kevin Matthews
(e-mail address removed)

 

[Kevin Matthews]

I don't seem to get any errors logged to the event log. The only
difference that I can see is that the usernames are not logged for the
attempts in the RAS log.

I have contacted our firewall manufacturer about the problems as well,
since I both upgraded the firewall and updated the RAS server on the
same day (NEVER AGAIN!!!!). It could be the new firewall
software....I just don't know.

I'm going to try rolling back the firewall to the older version and
see if that fixes it.

KM