> Just curious, I was reading up on www.pigtail.net/LRP and found he posted
> something about this vulnerability.  Is this a problem with Dachstein?  I
am
> using the kernel 2.2.19 without any mod to IP masq.
>
> Here is the link which states the issue (which sort of makes it sound like
> Dachstein is also vulnerable)
> http://www.pigtail.net/LRP/ip_masq_vulnerability.html

This is a basic, fundamental problem with masquerading "helper" modules,
which by design allow internal systems to open in-bound data connections.
If you really need this sort of vunerability blocked, do not load any of the
ip_masq helper modules, and replace their functionality (if possible or
required) with application level proxy support.

Charles Steinkuehler
http://lrp.steinkuehler.net
http://c0wz.steinkuehler.net (lrp.c0wz.com mirror)



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