RE: SSL - Man-in-the-Middle filtering

["Nelson Brito" <nbrito () sekure org>]

When you have a HIPS which has the capabilities to inspect SSL, IPSEC,
etc... traffic you do it in an upper level, so you just get the traffic
right after it is decrypted.

If you are looking for attacks against SSL, IPSEC, etc... you are using
their levels to sanitize the connection.

There are no penalties or broken law.

Nelson Brito (f.k.a. stderr)
Sekure SDI's Member since 1999
 

> -----Original Message-----
> From: listbounce () securityfocus com 
> [mailto:listbounce () securityfocus com] On Behalf Of Marian Ion
> Sent: Tuesday, December 11, 2007 4:07 AM
> To: focus-ids () securityfocus com
> Subject: RE: SSL - Man-in-the-Middle filtering
>
>
> Isn't this an interference in an encrypted communication, 
> penalized by the law? And ... as a user, how can you trust 
> the confidentiality this communication when you found out about?
>
> marian
>
>
>
> -----Original Message-----
> From: listbounce () securityfocus com 
> [mailto:listbounce () securityfocus com] On Behalf Of Ravi Chunduru
> Sent: 08 December 2007 18:33
> To: focus-ids () securityfocus com
> Subject: SSL - Man-in-the-Middle filtering
>
> it seems that some network IPS devices and application 
> firewalls are not only providing SSL based HTTP inspection on 
> server side, but also on client side (i know  of one IPS 
> device which is in beta testing).
> i understand that it is required as attacks can be sent in 
> SSL to avoid blocking.
>
> when deployed on client side, these devices resign 
> certificates (of public servers) with local CA certificate. i 
> see two aspects to it - users need to trust local authority 
> (enterprise administrators) and second is users will have  
> false sense of security (that is users are no longer see the 
> actual CA of server certificate).
>
> any comments on acceptance of this functionality in 
> enterprise deployments?
>
> is there any standard mechanism (in SSL standard or in HTTP 
> standard) to send actual CA certificate to the browser by 
> forward proxies?
>
> thanks
> Ravi
>
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>
>
> --------------------------------------------------------------
> ----------
> Test Your IDS
>
> Is your IDS deployed correctly?
> Find out quickly and easily by testing it with real-world 
> attacks from CORE IMPACT.
> Go to 
> http://www.coresecurity.com/index.php5?module=Form&action=impa
ct&campaign=intro_sfw
> to learn more.
> --------------------------------------------------------------
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Is your IDS deployed correctly?
Find out quickly and easily by testing it 
with real-world attacks from CORE IMPACT.
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