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tcpkill

Slightly modified tcpkill util (original), to allow for only killing a specific number of connections.

Compilation & Installation

First install the dependencies:

brew install libpcap libnet

Compile

make LDFLAGS="-lpcap -lnet -L/opt/homebrew/opt/libpcap/lib -L/opt/homebrew/opt/libnet/lib" CFLAGS="-Wall -I/opt/homebrew/opt/libpcap/include -I/opt/homebrew/opt/libnet/include"

If you get compilation that includes are not found, ensure with file /opt/homebrew/opt/libpcap and /opt/homebrew/opt/libnet exist and are valid directories. If there are not, you can use brew list libpcap and brew list libnet to find where the files are located and update the make invocation above with the correct location for on your machine.

Install:

sudo tcpkill /usr/local/bin

Usage

Kill by host:

sudo tcpkill host www.google.com

Tested With

  • macOS Monterey 12.0.1
  • libpcap installed through Brew at version 1.10.1
  • libnet installed through Brew at version 1.2

Copyrights & Story

This is me (maoueh) writing that down from my own perspective.

This seems to have been extracted from dsniff which contains much more tools and right extra dependencies that is not necessary here.

I'm quite unsure who initially trim it down. The original repository of the tcpkill I forked on on GitHub is https://github.com/chartbeat/tcpkill. But weirdly, it contains commits from Allan Beaufour, funnily his repo https://github.com/beaufour/tcpkill is a fork of https://github.com/chartbeat/tcpkill. So it's unclear who is res

All copyright belongs to original authors, I've just tweaked the code to make it work on recent version of OSX and libraries. I also removed a bunch of files that were not used anymore.