User:Mistapotta/Hamachi

Installing Hamachi

Part of the reason I want to install Hamachi is so my son will be able to view videos on our home server. I have DVD's ripped to the harddrive, and totem is pre-installed on the OLPC. I've got Hamachi VPN on all the computers in the house, and would like to add it to his XO Laptop.

Please note that Hamachi is not open-source. If you're looking for an open-source alternative, I suggest you look into Open VPN.

Downloading Hamachi

You need to get a copy of the files to install Hamachi and put them in the /usr/src folder, We'll start by switching to the superuser, then getting the source code

su
cd /usr/src
wget http://files.hamachi.cc/linux/hamachi-0.9.9.9-20-lnx.tar.gz
tar -xvzf hamachi-0.9.9.9-20-lnx.tar.gz

This creates a folder hamachi-0.9.9.9-20-lnx which will hold the installation files.

Installing make

To continue the install. you have to switch to the directory and type make install. make is not already installed on OLPC, so you need to install it by typing

yum install make
yum install binutils

. It should install all the necessary parts to make Hamachi executable from the command line.

Installing the Hamachi program

To install the hamachi executables (hamachi, hamachi-init, and tuncfg), you'll need to change to the directory and type make install. Then you need to type tuncfg to start the tunnel configuration (Hamachi uses ssh to tunnel to other members of the VPN.)

cd hamachi-0.9.9.9-20-lnx.tar.gz
make install
tuncfg

Accessing the existing Hamachi VPN

Set up a shell file (I called mine hama.sh) with the following lines of code:

tuncfg
hamachi-init -c /etc/hamachi
hamachi -c /etc/hamachi start
hamachi -c /etc/hamachi set-nick olpc
hamachi -c /etc/hamachi login
hamachi -c /etc/hamachi join NETWORKNAME NETWORKPASSWORD
hamachi -c /etc/hamachi go-online NETWORKNAME

In the code above, change olpc to whatever name you want, or leave it. Change NETWORKNAME and NETWORKPASSWORD to the VPN Network Name and Network Password.

Then type ./hama.sh to execute it. This will connect you to the network.

At this point...

If you type ifconfig, you should see something like this:

bash-3.2# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:17:C4:0C:D8:DE
          inet addr:192.168.1.28  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::217:c4ff:fe0c:d8de/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2884 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1942 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:613526 (599.1 KiB)  TX bytes:234824 (229.3 KiB)

ham0      Link encap:Ethernet  HWaddr 00:FF:95:1F:E7:34
          inet addr:5.178.7.95  Bcast:5.255.255.255  Mask:255.0.0.0
          UP BROADCAST RUNNING MULTICAST  MTU:1200  Metric:1
          RX packets:76 errors:0 dropped:0 overruns:0 frame:0
          TX packets:76 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:500
          RX bytes:12796 (12.4 KiB)  TX bytes:17359 (16.9 KiB)

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:37 errors:0 dropped:0 overruns:0 frame:0
          TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:1868 (1.8 KiB)  TX bytes:1868 (1.8 KiB)

msh0      Link encap:Ethernet  HWaddr 00:17:C4:0C:D8:DE
          inet addr:169.254.9.122  Bcast:169.254.255.255  Mask:255.255.0.0
          inet6 addr: fe80::217:c4ff:fe0c:d8de/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2887 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1951 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:613688 (599.3 KiB)  TX bytes:237094 (231.5 KiB)

The important part is you now have ham0 as a network adapter. At this point, you can access other computers (via ssh, sftp, ping etc.) through their Hamachi IP addresses.

Starting Hamachi at Boot

It'd be nice if hamachi was set up to run when we boot up the machine. To do this, we have to create one file and edit another.

We need to create a shell script that will be called when the machine is booted. To do this, we type:

vi /etc/init.d/hamachi

which will create the hamachi script file. Type i to be able to insert text, then put the following in the file:

#!/bin/sh

hamachi_start() {
  echo "Starting hamachi..."
  /sbin/tuncfg
  /usr/bin/hamachi -c /etc/hamachi start
  /usr/bin/hamachi -c /etc/hamachi set-nick olpc
  /usr/bin/hamachi -c /etc/hamachi login
  /usr/bin/hamachi -c /etc/hamachi join NETWORKNAME NETWORKPASSWORD
  /usr/bin/hamachi -c /etc/hamachi go-online NETWORKNAME
}

hamachi_stop() {
  echo "Stopping hamachi..."
  killall tuncfg
  /usr/bin/hamachi -c /etc/hamachi stop
}

hamachi_restart() {
  hamachi_stop
  sleep 1
  hamachi_start
}

case "$1" in
'start')
  hamachi_start
  ;;
'stop')
  hamachi_stop
  ;;
'restart')
  hamachi_restart
  ;;
*)
  hamachi_start
esac

and after typing this, type :wq, which writes the file and quits the editor. (Note: you need to change NETWORKNAME and NETWORKPASSWORD to the appropriate values, and you can change olpc to whatever you choose.

To get this file to be run by the machine when it boots, we have to edit another file. So type

vi /etc/rc.local

to edit the file. Type i to get into insert mode, move to the end of the last entry, type enter, then add the following line:

/etc/init.d/hamachi

and after typing this, type :wq, which writes the file and quits the editor.

At this point, when you reboot your machine, you should automatically log into Hamachi. You can check this by rebooting, running the Terminal Activity, and typing :

ifconfig

You should see the "ham0" network adapter.

To Do:

Mounting shares using /etc/fstab (so file systems show up at boot)