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From "Priya balaji" <>
Subject [users@httpd] Protection from slapper worm DDos attack
Date Tue, 19 Nov 2002 12:44:02 GMT

I am running the latest versions of Apache, modssl and openssl on 
a Solaris machine. My machine is getting a lot of connections from 
hosts running older versions of Apache and Openssl. My web server 
reaches max limit and stops serving pages. Requires a restart.

All the symptoms look like the activity of the slapper worm. I 
have obtained a lot of information about this worm, but there is 
no information about protecting the machine from the DDOS attacks 
 from other infected hosts.

It will be very helpful if somebody can provide information on the 

1. Are the machines running the updated versions vulnerable to 
these attacks or have i done something wrong in setting things 
2. Will blocking the ports from where the infected machines 
communicate help in my case?

Thanks in advance.


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