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Conference gyro::internet_toolss

Title:	Internet Tools
Notice:	Report ALL NETSCAPE Problems directly to kdlucas@netscape.com.rnet? Read note 448.L for beginner information.
Moderator:	teco.mro.dec.com::tecotoo.mro.dec.com::mayer

Created:	Fri Jun 25 1993
Last Modified:	Fri Jun 06 1997
Last Successful Update:	Fri Jun 06 1997
Number of topics:	4714
Total number of notes:	40609

4582.0. "AUTHENTICATION SERVER UNREACHABLE on Firewall" by MLNCSC::ZAGHI () Fri Mar 28 1997 10:04

Hi ,

A customer of mine is facing with a odd behaviour in his firewall configuration:


ENVIRONMENT:
-----------

 --------------              ------------               ---------------
|              |            |            |             |               |
| PCs Side     |  --------- |   Firewall | ----------- |  Servers      |
|              |            |   System   |             |   Unix        |
 --------------             |            |             | (RED SIDE)    |
                             ------------               ---------------


PCs Side = Some PCs that have to connect via TELNET or FTP to the Servers Unix
           systems.

Firewall System  = ALPHA 3000-300 with "Digital Firewall for Unix" V2.0 
                   installed ( The operativ system is Digital Unix V3.2C)

Servers Unix = Some Unix systems



PROBLEM:
-------

There are not authentication enabled on Firewall .
PCs use TELNET and FTP to connect to the Firewall node and from this node 
they reach Unix systems (once on the firewall node they use the command
"connect server_name" in the case of the telnet command) . 
When a user from a PC make a connetction to the firewall node receives
a welcome message (customized by an existing html page ).

Random , the following behaviour happens :

when a user from a PC make a connection to the firewall doesn't receive the
welcome message and get the following message :
AUTHENTICATION SERVER UNREACHABLE 

After that he can still connect to a Unix server ( both with telnet & ftp ).

The normal behaviour comes back if the customer reboot the firewall system.

The customer is asking to me what could be the cause of the message 
AUTHENTICATION SERVER UNREACHABLE ( it is important to consider that when this 
message appears ftp and telnet services work ok)

Could anyone give me any tips ?

Many thanks in advance, 

Paolo 
(CSC, Milan)

T.R	Title	User	Personal Name	Date	Lines
4582.1		60675::nessus.cao.dec.com::Mayne	A wretched hive of scum and villainy	`Mon Mar 31 1997 17:34`	3
	You might want to ask in the firewall conference (NOTED::SEAL). PJDM