On Fri, Sep 23, 2005 at 11:34:00AM -0300, Maurit Pereira Fagundes said at one
point in time:
> Hello all,
>
> Anyone knows a web site or a ebook that explains the use of TCP/UDP ports and
> when it is necessary to open them? Explaining in details each protocol, etc.
> I am reviewing my rule base and i want to know if everything configured up to
> know is really necessary...to do this, i must understand each protocol, know
> what i have im my network and what kind of access the users need..
>
> Thanks in advance
> Maurit.
>
http://www.iss.net/security_center/advice/Exploits/Ports/default.htm
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