> I am a student of information science at Otago University, and have been an
>avid subscriber to the list for almost a year now. I am soon to sit an exam
>and one of the questions relates to those types of electronic attack that
>firewalls do not protect against. If anyone has any ideas in this area, they
>would be much appreciated. I am not looking for instructions obviously, just
>general classes of attack that firewalls fail to counter.
If there is a simgle answer to this question, it has to be client-side holes.
Things like mail viruses, browser holes, etc.. Some firewalls can
be configured to help with this, but usually only after the client
hole has been identified, and used on someone.
>For example I have
>heard on a number of occasions that SYN flooding, due to its location in the
>connection initiation defies firewall protection. I am a little skeptical
>myself, but any input would be much appreciated...
Most firewalls should be able to be made resistant to SYN floods. FW-1,
for example, ahs a SYN defender feature.
Ryan
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