Shai,

ICQ is very touchy. ICQ servers are notorious for dropping connections
constantly, and for being extremely timeout sensitive. This problem is
magnified when using network address translation as your packets are going
through a latency increasingprocedure, and a redirection which as you may
know with UDP is not 100% reliable as there is no error correction. Your
best bet in this situation is to include a SOCKS5 compliant proxy using an
untranslated IP address in your network configuration, then configure ICQ to
use it by selecting "I am behind a firewall or proxy" in the connection
preferences.

Christopher Dinsmore
CCSA CCSE
===========================
Netegrity Technical Support
[EMAIL PROTECTED]
781-890-1700
===========================


>  -----Original Message-----
> From:         Shai [mailto:[EMAIL PROTECTED]] 
> Sent: Wednesday, October 27, 1999 5:05 AM
> To:   [EMAIL PROTECTED]
> Subject:      ICQ problems
> 
> Hi,
> 
> I am using Firewall-1 with NAT and since we set it up we have ICQ problems
> (I.e. users up and down all the time, messages not delivered\received
> etc...).
> I wonder what is the best way to make ICQ working, Is it safe to open port
> 4000 TCP and UDP for ICQ?
> Is there any safer way to do it?
> 
> Thx,
> 
> Shai Peri
> ----------------------------------------
> AGENTics Ltd.- SysAdmin.
> Tel.  09-9548969,  Ext. 209
> ----------------------------------------
> Email:  [EMAIL PROTECTED] 
> ----------------------------------------
> T-mailer:          03-6810080 
> No.                  039502912
> ----------------------------------------
> 
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