Re: CBAC and TCP Intercept

From: Ali El Moussaoui (mousawi.ali@gmail.com)
Date: Fri Mar 20 2009 - 10:49:59 ART


Thanks Anthony.

On Fri, Mar 20, 2009 at 3:19 PM, Anthony Sequeira <
asequeira@internetworkexpert.com> wrote:

> From one of my favorite Cisco Press peers, Richard Deal:
>
> "One thing that I did not cover in Chapter 9 was the capability of CBAC to
> restrict the number of half-open sessions, which typically is used to
> prevent TCP SYN flood attacks. This feature is similar to TCP Intercept, but
> it can examine TCP as well as UDP and ICMP sessions. Of course, with UDP and
> ICMP, because there is no state machine that defines the setup, maintenance,
> and removal of a connection, CBAC uses timers instead of connection
> threshold values."
>
> If you want to read more:
>
> http://www.ciscopress.com/articles/article.asp?p=345618&seqNum=4
>
> Anthony J. Sequeira, CCIE #15626, CCSI #23251
> Senior CCIE Instructor
>
> asequeira@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com <http://www.internetworkexpert.com/>
> Toll Free: 877-224-8987
> Outside US: 775-826-4344
>
>
> On Mar 20, 2009, at 7:01 AM, Ali El Moussaoui wrote:
>
> Hello Guys,
>>
>> Does CBAC feature do the TCP intercept job ? I mean in addition to what
>> CBAC
>> does.
>>
>> Ali
>>
>>
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>>
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