Cannot connect to RAS server

[IT Dept]

Hello to Everyone

Here the sutiation

We have domain with 2 dc each one of them run IAS which use from RAS server
on our network for athetication
The problem now is then users try to call to RAS their login procedure,
after show the message "Verifying username and password..." for a while,
stops with message:
Error 734: The PPP link control protocol was terminated.

There is not anything on log RAS or IAS server
it seams the request never send to IAS server

RAS servers are members of domain

Any suggestion?

Thanks at advance

 

[Puja Pandey[MSFT]]

Error 734
This is a situation where remote access clients can connect to the remote
access server but fail to authenticate. Please verify settings in the
following areas:
Authentication:
Verify that the remote access client and the remote access
server in conjunction with a remote access policy are enabled to use at
least one common authentication method and at least one common encryption
method.

If you are using MS-CHAP, verify that you are not using a user
password over 14 characters long. If so, either use a different
authentication protocol or change the password so that it is 14 characters
or less in length.

Check the configuration of the authentication provider.

If you are using Windows authentication for a remote access
server that is a member of a mixed-mode or a native-mode Windows 2000
domain, verify that the remote access server computer account is a member of
the RAS and IAS Servers security group. You can use the netsh ras show
registeredserver command at the Windows 2000 command prompt to view the
current registration. If your server is not registered, use the netsh ras
add registeredserver command to register the server in a specified domain.



?If you add or remove the remote access server computer to the RAS and IAS
Servers security group, the change does not take effect immediately because
of how Windows 2000 caches Active DirectoryT directory service information.
For the change to take effect immediately, you need to restart the remote
access server.


Hope this helps.
Puja