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From Kedar <>
Subject RE: Tomcat 4.1.24 stops responding due to attack
Date Wed, 23 Jun 2004 02:41:22 GMT
Hi Carl,

Thanks for the help.
At 09:03 04/06/22 +0200, Carl Olivier wrote:
>I had this problem myself - and I have found that there is a potential
>memory leak in the JK connector code (in the mod and the Java
>implementation?).  My solution was to remove Apache and go solo with Tomcat
>5.0.25 (will keep upgrading though).
>My problem has gone away!  Tomcat stays up serving requests beautifully with
>NO memory problems whatsoever!
>I will be posting a better summary of my problem, the tests I ran, and the
>eventual solution.

## At present I have tried the Solution suggested by Ryan(Changing env 
If still problem persists, I ll try solution given by you.

>-----Original Message-----
>From: Kedar []
>Sent: 22 June 2004 06:09 AM
>Subject: Tomcat 4.1.24 stops responding due to attack
>I am facing following problem :
>Problem : After working properly for a day or 2, I cannot access my website.
>Only way to restart is kill the process and again run "". I
>cannot stop normally
>using ""
>Configuration : Red Hat Linux release 9 (Shrike), Tomcat 4.1.24, Postgres
>Points Checked -
>1. The tomcat is not down, I can see process by "ps -ef"
>2. However, as a result of "netstat -tcp" I am getting some unknown users
>accessing my "mysqld".
>Under normal working conditions I can recognise the IP address and accessed
>processes listed under "netstat -tcp"
>Actually I am not using "mysql" at all.
>No other application on server is using mysqld.
>3. The default Apache 80 port can be accessed normally(Tomcat is running on
>4. I have changed the port to 8081, but problem persists.
>Is it that someone is making lot of fake connections to slow down my
>tomcat, or am I infected by virus?
>Any hint or pointer will be appreciated.
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