cutemanworking / hdility

Hao Dong's Utilities

HDility

Nothing special.

I usually wrote scripts to fasten my geek life.

Now I'm putting them here one by one to share.

installMOTD

• A script to install MOTD on Debian.

• Preview:

  

• Usage: wget https://raw.githubusercontent.com/haodong/hdility/master/installMOTD.sh - | sh

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NATctl

• A controller to add/list/reset Traffic Transfer through iptables.
• Installation: wget https://raw.githubusercontent.com/haodong/hdility/master/NATctl -O /usr/local/bin
• Usage:

> NATctl -h
This script can help you handle Traffic Transfer through iptables.
Usage: iptNAT [-c $cmd] [-i #ID] [-f @IP] [-p #Port] [-t @IP] [-b #Port] [-u]
    -c: Give a command to implement. Available commands are:
        add: Add new rules.
            -i: Insert on the #IDth line of chain.
            -f: From the IP. By default use 'dig' function to detect its public IP. Must be specified if the host has multiple public IPs.
            -p: From the Port.
            -t: To the IP, namely the target IP address.
            -b: To the Port, namely the target port.
            -u: With UDP mode. By default use TCP only.
        del: Delete existing rules.
            Note: must specify parameters as same as you add them, but [Insert ID] is not required.
        list: List your NAT iptables(PREROUTING and POSTROUTING).
        reset: Reset the two iptables, cleaning all added Traffic Transfer rules.


The code was written by Hao Dong under GPL-3.0 License.

• Example:
  1. If a user from host A want to access host C (1.1.1.1), but the traffic between A and C is two slow to work.
  2. Fortunately there is another host B (0.0.0.0), whose traffic torward host C is faster than A.
  3. Also the route between A and B is very good.
  4. Then the user should use the following code at host B.

> NATctl -c add -f 0.0.0.0 -p 60001 -t 1.1.1.1 -b 22
Adding TCP rules ...
Done.

## To delete
> NATctl -c del -f 0.0.0.0 -p 60001 -t 1.1.1.1 -b 22

## To revert all
> NATctl -c reset
This will clean up all rules on chains of PREROUTING and POSTROUTING.
Are you sure?(y/n)? y
Cleaning ...
Done.

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Buy me a cup of milk.

Milk is good in which it can refresh my spirit and bring more energy to me for developing.

Thank you!