Hello again,

Thanks to everyone for all the advice. I GREATLY appreciate it. (REALLY!!)

Ok, so lets start from the top:

Yeah, sorry, IP packets, not Sugar or Creamer packets - but I heard coffee filters might work for this. BTW: I like my packets shaken and not stirred.

I know about Net::Pcap, but I read somewhere that you can only view packets and not change them (like an IDS). I'm looking for more of the IPS or firewall approach (yes, pileofrogs, you are correct).

I know about Squid (and actually prefer it as a proxy server solution). I want the ability to look at a packet, then if it's heading for www.badsite.com, change it to go to www.errorpage.com. I know Squid would work great for this, but I don't want a user to be able to change their proxy settings to bypass it. If I could put Squid inline, I could eliminate this, but then they could just bypass that server physically.

I have never looked at Squid on Windows (except through Cygwin). If it does run on Windows, I'm curious how they filter packets. I know Checkpoint does it as well. My guess is that they cut into Windows using some variant of C.

Thank you for the code, NetWallah, it's a good start. I just wish Net::Pcap would let you filter as well as view (on Windows). This would be so much easier if the world were "hooked" on Unix.

Thanks again to everyone - I hope that answers some questions and gets one step closer.


-Sean
AKA: Morpheous1129

In reply to Re^2: Filtering packets on Windows by Anonymous Monk
in thread Filtering packets on Windows by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.