[erlang-questions] low level packet access from erlang
Wed Apr 3 19:59:47 CEST 2013
i am building an experimental firewall of sorts,
and need to be able to access incoming packets
directly, so i can muck around with low level
src/dst/ports/etc information. it looks like the standard
modules handle the low level things for me, such that
i by the time i see an incoming message, the low level
details are lost.
how can i arrange access to the lower level information
(ignoring performance issues for now)?
i see like mentioned a way in an old (2001) thread:
but the link to bluetail where his code was doesn't exist anymore.
i've read the ei/pcap approach presented here:
but i don't want to just sniff packets, but intercept them.
i'd appreciate any insights into how to tackle this.
AT&T Chief Security Office (CSO)
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