This doc describes the installation of Scapy under OpenBSD 3.8


You need to have python installed :

# pkg_add ftp://ftp.openbsd.org/pub/OpenBSD/3.8/packages/i386/python-2.4.1p0.tgz


Then, you'll need a recent libpcap : download it from
http://www.tcpdump.org/release/libpcap-0.9.4.tar.gz, then :

$ tar zxf libpcap-0.9.4.tar.gz
$ cd libpcap-0.9.4
$ ./configure
$ make
$ gcc -Wl,-soname,libpcap.so -shared -f -o libpcap.so.0.9.4 *.o
# make install
# install -c -m 644 ./libpcap.so.0.9.4 /usr/local/lib/libpcap.so.0.9.4
# ln -s /usr/local/lib/libpcap.so.0.9.4 /usr/lib/libpcap.so.9.4
$ cd ..


Now, python-libpcap : download it from
http://prdownloads.sourceforge.net/pylibpcap/pylibpcap-0.5.1.tar.gz,
then :

# pkg_add ftp://ftp.openbsd.org/pub/OpenBSD/3.8/packages/i386/swig-1.3.24p0
$ tar zxf pylibpcap-0.5.1.tar.gz
$ cd pylibpcap-0.5.1
$ mv setup.py setup.py.orig
$ sed 's#include_dirs = \[ \]#include_dirs = \[ "/usr/local/include" \]#' setup.py.orig > setup.py
$ python ./setup.py build
# python ./setup.py install
$ cd ..

Last mandatory lib : libdnet. Get it via cvs :

$ cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/libdnet login
$ cvs -d:pserver:anonymous@cvs.sourceforge.net:/cvsroot/libdnet co libdnet
$ cd libdnet
$ ./configure
$ make
# make install
$ cd python
$ python ./setup.py build
# python ./setup.py install
$ cd ../..


Not required, but might be usefull :

- crypto lib for python :

# pkg_add ftp://ftp.openbsd.org/pub/OpenBSD/3.8/packages/i386/py-crypto-2.0
# ln -s ../../python2.3/site-packages/Crypto /usr/local/lib/python2.4/site-packages/

- gnuplot (you need to install this one using the ports, since there
is no packages) & py-gnuplot

$ cd /usr/ports/math/gnuplot
$ make
# make install
# pkg_add ftp://ftp.openbsd.org/pub/OpenBSD/3.8/packages/i386/py-gnuplot-1.7.tgz
# ln -s ../../python2.3/site-packages/Gnuplot /usr/local/lib/python2.4/site-packages
# ln -s ../../python2.3/site-packages/Numeric /usr/local/lib/python2.4/site-packages
# ln -s ../../python2.3/site-packages/Numeric.pth /usr/local/lib/python2.4/site-packages

- /etc/ethertypes :
# wget http://pierre.droids-corp.org/scapy/ethertypes -O /etc/ethertypes

- PyX :
Download it from :
http://prdownloads.sourceforge.net/pyx/PyX-0.8.1.tar.gz, then :

$ cd PyX-0.8.1
$ python ./setup.py build
# python ./setup.py install


Now, download the "scapy.py" file and install it :

$ wget http://www.secdev.org/projects/scapy/files/scapy.py
# install -c -m 755 ./scapy.py /usr/local/lib/python2.4/site-packages/
# ln -s /usr/local/lib/python2.4/site-packages/scapy.py /usr/local/bin/scapy


Scapy should run correctly now. You might have a look here:
http://pierre.droids-corp.org/scapy/ for some extra-not-yet-implemented
features.