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denial of serivce!!


 
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# 1  
Old 07-07-2002
Tools denial of serivce!!

hello ,
can any body provide me details on , how to stop "attacks of denial of serivce & death of ping" on solaris OS.
any commands to know such attacks , and of course remedies?
thanx in advance
raju
raju
# 2  
Old 07-08-2002
by installing the latest solaris recomended, security pathes will fix and prevent future attacks.


you can get the latest security patches for sun on http://sunsolve.sun.com

here is a site that could be of more help
in stoping attacks

http://www.infosyssec.com/infosyssec/secdos1.htm

Last edited by hassan2; 07-08-2002 at 09:34 AM..
# 3  
Old 07-18-2002
Keeping the server daemons and OS tcp/ip stack patched cannot be stressed enough, the most effective DOS attacks are those which cause much system resource to be consumed for little traffic (such as a buffer overflow crashing an apache process, the request is small but the recovery uses resource, If I can send 100 requests a second to a vulnerable box then it has to spawn 100 processes a second and still serve other clients, this scales rather badly).

There are two other things you can do:

1.) Look at your gateway routers and be certain these too are patched. You may like to look at some of the advanced traffic queueing options which may be there.

2.) A proactive monitoring system so you can detect abnomally high loads on a machine,strange traffic patterns in your network , alalyse events and then block the source IP addresses as far out as possible (preferably at your ISP, otherwise he who has the greated bandwidth will win).

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