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Re: Minimum Security For LVS box ?

To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: Re: Minimum Security For LVS box ?
From: Malcolm Turnbull <malcolm.turnbull@xxxxxxxxxxxx>
Date: Wed, 02 Oct 2002 08:37:53 +0100
OK, I guess I was just being lazy :-).
which never gives good results.



Peter Mueller wrote:
Assuming that you have an LVS loadbalancer running on a linux box
and this box is behing a firewall so that only ports 80 & 443 are allowed from clients.

Do you really need to harden the loadbalancer firewall rules ?


Yes, always.


i.e. should I enable things like SYN cookie protection etc ?


It's a good idea to not rely on one firewall box anywhere in your setup.  If
you've got a PIX or Checkpoint or whatever firewall box what harm can it do
to take 10 minutes now and setup iptables/ipchains packet filter rules,
basic accept/deny statements like Joe suggests?

Syncookies is a whole different ballgame.  Syncookies as I'm sure you know
prevent SYN-flooding.  Does your firewall safeguard against syn-flooding so
strongly that you feel syncookies is a bad idea?

Hope that helps

Peter

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--

Regards,

Malcolm Turnbull

IT Manager
Crocus.co.uk Limited
Nursery Court
London Road
Windlesham
Surrey
GU20 6LQ

01344 629661
07715 770523

http://www.crocus.co.uk/

"They that can give up essential liberty to obtain a little temporary safety
deserve neither liberty nor safety." - Benjamin Franklin





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