pcapdiff

EFF is no longer working on pcapdiff, but development continues with the tpcat project.

Pcapdiff is a tool developed by the EFF to compare two packet captures and identify potentially forged, dropped, or mangled packets. Two technically-inclined friends can set up packet captures (e.g. tcpdump or Wireshark) on their own computers and produce network traffic between their two computers over the Internet. Later, they can run pcapdiff on the two packet capture files to identify suspicious packets for further investigation. See Detecting packet injection: a guide to observing packet spoofing by ISPs and EFF's Test Your ISP Project for more background.

Pcapdiff 0.1 is written in Python, is run from the command line, and requires the pcapy Python library. It should run on any OS where those two things are available. This is an early release of the software; more features and bug fixes are expected in the future.

Related Issues

Stay in Touch

NSA Spying

EFF is leading the fight against the NSA's illegal mass surveillance program. Learn more about what the program is, how it works, and what you can do.

Follow EFF

Protesting over the weekend? Keep your data safe with these 10 digital security tips: https://www.eff.org/deeplinks...

Jan 19 @ 6:39pm

Private agreements are implementing much of SOPA in secret, writes @StanfordCIS 's @AnnemarieBridy https://cyberlaw.stanford.edu... #CopyrightWeek

Jan 19 @ 5:55pm

For #CopyrightWeek, EFF's @EFFFalcon talks with @ICGuild about what policymakers should know about today's creators https://www.eff.org/deeplinks...

Jan 19 @ 5:13pm
JavaScript license information