Re: Netfilter_queue test program question

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Andy Cristina írta:
I've been attempting to play with netfilter_queue to see how effective
a certain similarity hashing technique would work for identifying
parts of documents being sent out over the network, but I haven't had
much progress even getting the test program to work.
Just a few questions:

- Why do you want to do such things?
- How would you come over on the compressed files, MIME encodings?
- Are you attempting to stop some information thiefing?
I can compile and link nfq_test.c fine, using both the old versions of
libnfnetfiler and libnetfilter_queue available from ubuntu's apt, and
by using the newest released versions compiled from source.

However, in any case when I run the compiled nfq_test, the program
seems to do nothing after setting the packet copy mode.  So it seems
to me as if it is perpetually waiting for a packet to be sent over the
netlink, but one never arrives, no matter how much network traffic I
have.

Am I missing some vital piece of setup?  When I run nfq_test, there
are two netfilter modules loaded.  Should there be more?  Do they need
to be configured somehow?  Is this the expected behavior?

I have tested this both on my ubuntu install and on a friend's debian,
both machines exhibit the same behavior.  Any help is certainly
appreciated.

Swifty





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