port knocking in Python

Saw some previous port knocking attemps, I feel either they are troublesome to install or too old or both. I decided write a much simpler on my own.

That grumpy BSD guy say no to port knocking, but I think he meant knockd. We can have so much fun outside knockd with innovative variaties. But his idea of doing pure PF script port knocking is worthy check out.

requires:

• Recent Ubuntu with iptables
• Python 2.x (with most distro's default)

Simply:

pip install kaimen

sudo python kaimen.py PORT SIZExTIMES

Parameters

- `PORT` the port you wanna hide
- `SIZE` size of `ping` packet
- `TIMES` how many times of `ping`

Example:

sudo python kaimen.py 2333 23x3

Hide TCP port 2333 but open to IP if 23 bytes of ping were sent three times.

• PF script port knocking 😜
• hits by times
• publish to pip
• port knocking over DNS. YEAH!