Running Scapy on Windows with Python 2.7
Intrusive update: please note that this answer is outdated, with recent versions (>=2.4.0) scapy will ONLY require Npcap (or Winpcap) to work, and IPython for the console. Have a look at the official windows page
In case someone needs Scapy for 64-bit + Python 2.7, I've uploaded the binaries here:
https://github.com/Kondziowy/scapy_win64
In addition, you probably need to install WinPcap from the official site
Compiling it yourself required a few fixes - I'll commit them upstream soon.
Q: how can i install required module pypcap
Using Scapy with Windows 7 is possible, but it does not exactly work out of the box. An install guide can be found here:
http://www.secdev.org/projects/scapy/doc/installation.html#windows
I strongly recommend to switch to python 2.6, as this will make your live much easier.
When you insist on 2.7 you will have to compile some of the require modules yourself. Also, some key modules like pypcap have to be patched before they can be compiled with python 2.7 (see pycap patch).
Here you will find some guidance on how to build the modules.
Q: will it be possible to make python scripts depending on scapy into standalone windows applications
Yes and no. While you can use py2exe to build a an EXE from your python code. Scapy uses WinPcap which you have to install in addition to your application.
Dirk Loss provides an Windows installer for the dnet package for Python 2.7. Together with the Windows installer for the pypcap package for Python 2.7 I was able to run Scapy successfully on Python 2.7 on Windows.