RE: adding another defence layer against viruses/worms

["Rivest, Philippe" <PRivest () transforce ca>]

That’s always an issue with IDS/IPS
Sadly I don’t know any heuristic IDS/IPS, I know the overall purpose and
setup of these devices but I did not have the chance to play with any of
them yet.

sorry

 
Philippe Rivest - CEH, Network+, Server+, A+
TransForce Inc.
Internal auditor - Information security
Verificateur interne - Securite de l'information

8585 Trans-Canada Highway, Suite 300
Saint-Laurent (Quebec) H4S 1Z6
Tel.: 514-331-4417   
Fax: 514-856-7541

http://www.transforce.ca/



-----Message d'origine-----
De : Juan B [mailto:juanbabi () yahoo com] 
Envoyé : 25 novembre 2009 11:55
À : boaz.shunami () rsa com; security-basics () securityfocus com; Rivest,
Philippe
Objet : RE: adding another defence layer against viruses/worms

Hi Philipe,

thanks for your respond !

the issue about heuristic IPS is that it will be in the lan so Im afraid of
a high volume of false positives ! 
which heuristic IPS would you suggest for this task?

thanks 

juan

--- On Wed, 11/25/09, Rivest, Philippe <PRivest () transforce ca> wrote:

> From: Rivest, Philippe <PRivest () transforce ca>
> Subject: RE: adding another defense layer against viruses/worms
> To: boaz.shunami () rsa com, juanbabi () yahoo com,
security-basics () securityfocus com
> Date: Wednesday, November 25, 2009, 11:31 AM
> I believe your looking for a
> Heuristic IPS, also called behavioral IPS.
> Which will take a look at the activities going on your
> network segment and
> build a DB of normal activities (PLEASE ensure you are
> virus, worm, hacker
> and problem free..). When you decide your DB is big enough,
> you stop it and
> run all day-2-day activities against it. Any deviation will
> be flagged as
> unauthorized and action will be taken.
>
> This will allow you to block new virus/worm while your AV
> should detect
> known threats. 
>
> Understand that these solutions are technical and I would
> suggest you get
> help if you're not familiar with these technologies.
>
>
> I like the solutions ob Boaz, especially network
> segregation. Implementing
> DMZ will contain (should) attacks.
>
> You can also use 2 levels of AV. IE use TrendMicro for
> network detection and
> Mcafe for host AV. This will reduce the risk that if one
> can't detect the
> threat, maybe the other can.
>
> Id also suggests using network proxies. If you break the
> client-server
> communication, you might be able to scan your packets
> deeper and detect
> attacks before they are sent to the client.
>
> Hope this helps :)
>
>  
> Philippe Rivest - CEH, Network+, Server+, A+
> TransForce Inc.
> Internal auditor - Information security
> Verificateur interne - Securite de l'information
>
> 8585 Trans-Canada Highway, Suite 300
> Saint-Laurent (Quebec) H4S 1Z6
> Tel.: 514-331-4417   
> Fax: 514-856-7541
>
> http://www.transforce.ca/
>
>
>
> -----Message d'origine-----
> De : listbounce () securityfocus com
> [mailto:listbounce () securityfocus com]
> De
> la part de boaz.shunami () rsa com
> Envoyé : 25 novembre 2009 02:08
> À : juanbabi () yahoo com;
> security-basics () securityfocus com
> Objet : RE: adding another defence layer against
> viruses/worms
>
> Hi Juan,
>
> I would advise your Client to either:
>
> 1. Have solid policy as to what sites are accessible/are
> not accessible
> from his branches (can be enforced with bluecoat and the
> like...)
> 2. Segregate the network the branches have access to (kind
> of DMZ) from
> his LAN using FW.
> 3. Give low level permissions to the branches on the core.
>
> My 2c...
>
> Thanks,
>  
> Boaz
>
> -----Original Message-----
> From: listbounce () securityfocus com
> [mailto:listbounce () securityfocus com]
> On Behalf Of Juan B
> Sent: Tuesday, November 24, 2009 4:04 PM
> To: security-basics () securityfocus com
> Subject: adding another defence layer against
> viruses/worms
>
> Hi all,
>
> I'm doing some security consulting for a client. this
> client have around
> 30 remote branches connected to his core. the problem is
> that sometimes
> the AV fails to detect new viruses/worms coming from those
> branches so
> those viruses/worms mess up his LAN.another problem is that
> the the
> client doesn't have much of control over the remote PCs in
> the branches.
> so I thought about adding another layer of defence in which
> we will add
> an IPS (which Ips detects also viruses/worms??) which will
> filter and
> scan all traffic coming from the branches.
>
> I just wonder if you guys agree with my suggestion.
>
> any comments will be welcomed.
>
> BTW,
>
> any recomendations for the IPS?
>
> thanks a lot 
> juan
>
>
>       
>
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