OpenKeeper is a software for Linux to replace the NetKeeper. I don't know who is the original author. I put it on GITHUB is just because I found a bug when I use it, I have fixed it and warry others occur this bug again.

apt-get install build-essential
git clone https://github.com/purpleroc/OpenKeeper
cd openkeeper/
cd openkeeper-cli-1.2/
cd 32/　　　or 　　　cd 64/
sudo sh -x install.sh

• 1.　Config
  

sudo ok-config

intput username/password/device for dial.

• 2. Dial
  

You can use:

sudo ok

to dial, or you can use:

sudo okok

when you disconnect, it will auto re-dial.

• 3. Stop
  

You can use:

sudo ok-stop

or

sudo okok-stop