From: Jason Brvenik (jasonbsourcefire.com)
Date: Mon Sep 05 2005 - 11:06:41 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Pablo Nebrera wrote:
>
> I don't understand this option in the snort configuration file.

http://www.snort.org/docs/snort_htmanuals/htmanual_2.4/node10.html#SECTION00303000000000000000

> Does it check the checksum for every packet?

If configured to do so.

> What is the checksum of a
> packet?

http://en.wikipedia.org/wiki/Checksum

Essentially a checksum is a sanity check that the packet has not been
corrupted or otherwise modified in flight.

more about how it is used in packets can be found here

http://www.networksorcery.com/enp/default0703.htm

>
> What does this option do exactly??

Checks the calculated checksum against the one in the packets and will
discard the packets if they do not match.

>
> Thanks
>
>
> Pablo
>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
> Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
> _______________________________________________
> Snort-users mailing list
> Snort-userslists.sourceforge.net
> Go to this URL to change user options or unsubscribe:
> https://lists.sourceforge.net/lists/listinfo/snort-users
> Snort-users list archive:
> http://www.geocrawler.com/redir-sf.php3?list=snort-users
>

-------------------------------------------------------
SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_______________________________________________
Snort-users mailing list
Snort-userslists.sourceforge.net
Go to this URL to change user options or unsubscribe:
https://lists.sourceforge.net/lists/listinfo/snort-users
Snort-users list archive:
http://www.geocrawler.com/redir-sf.php3?list=snort-users

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]