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https://github.com/google/tcp_killer
Shuts down a TCP connection on Linux or macOS. Local and remote endpoint arguments can be copied from the output of 'netstat -lanW'.
https://github.com/google/tcp_killer
Last synced: about 1 month ago
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Shuts down a TCP connection on Linux or macOS. Local and remote endpoint arguments can be copied from the output of 'netstat -lanW'.
- Host: GitHub
- URL: https://github.com/google/tcp_killer
- Owner: google
- License: apache-2.0
- Archived: true
- Created: 2017-06-29T15:17:49.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2020-10-08T03:32:43.000Z (about 4 years ago)
- Last Synced: 2024-08-02T16:47:25.944Z (4 months ago)
- Language: Python
- Homepage:
- Size: 10.7 KB
- Stars: 209
- Watchers: 7
- Forks: 43
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
Awesome Lists containing this project
- my-awesome-starred - google/tcp_killer - Shuts down a TCP connection on Linux or macOS. Local and remote endpoint arguments can be copied from the output of 'netstat -lanW'. (Python)
- awesome-repositories - google/tcp_killer - Shuts down a TCP connection on Linux or macOS. Local and remote endpoint arguments can be copied from the output of 'netstat -lanW'. (Python)
README
# tcp_killer
Shuts down a TCP connection on Linux or macOS. Local and remote endpoint arguments can be copied from the output of 'netstat -lanW'.
The functionality offered by *tcp_killer* is intended to mimic [TCPView](https://technet.microsoft.com/en-us/sysinternals/tcpview.aspx)'s "Close Connection" functionality and [tcpdrop](http://man.openbsd.org/tcpdrop.8)'s functionality on Linux and macOS.
## Basic Usage
`python tcp_killer.py [-verbose] `
Arguments:
-verbose Show verbose output
Connection's local IP address and port
Connection's remote IP address and port
Examples:
tcp_killer.py 10.31.33.7:50246 93.184.216.34:443
tcp_killer.py 2001:db8:85a3::8a2e:370:7334.93 2606:2800:220:1:248:1893:25c8:1946.80
tcp_killer.py -verbose [2001:4860:4860::8888]:46820 [2607:f8b0:4005:807::200e]:80
## Full Example
```
geffner@ubuntu:~$ # Create a server to listen on TCP port 12345
geffner@ubuntu:~$ nc -d -l -p 12345 &
[1] 135578
geffner@ubuntu:~$ # Connect to the local server on TCP port 12345
geffner@ubuntu:~$ nc -v -d localhost 12345 &
[2] 135579
Connection to localhost 12345 port [tcp/*] succeeded!
geffner@ubuntu:~$ # Find the connection endpoints
geffner@ubuntu:~$ netstat -lanW | grep 12345.*ESTABLISHED
tcp 0 0 127.0.0.1:33994 127.0.0.1:12345 ESTABLISHED
tcp 0 0 127.0.0.1:12345 127.0.0.1:33994 ESTABLISHED
geffner@ubuntu:~$ # Kill the connection by copying and pasting the output of netstat
geffner@ubuntu:~$ python tcp_killer.py 127.0.0.1:33994 127.0.0.1:12345
TCP connection was successfully shutdown.
[1]- Done nc -d -l -p 12345
[2]+ Done nc -v -d localhost 12345
```
## Dependencies
### lsof
This program uses [lsof](https://en.wikipedia.org/wiki/Lsof) to find the process and socket file descriptor associated with a given TCP connection.
lsof can be installed via your package management system (for example, `sudo apt-get install lsof`).
### frida
This program uses the [frida](https://www.frida.re/) framework to perform code injection.
Frida can be installed as follows: `sudo pip install frida`
## Disclaimer
This is not an official Google product.