Tunneling Between Instances

From T3

Preliminaries

% yum -y install byacc gcc flex lzo lzo-devel openssl-devel system-config-nfs zlib-devel</tt>
% wget http://superb-east.dl.sourceforge.net/sourceforge/vtun/vtun-3.0.1.tar.gz
% tar xzf vtun-3.0.1.tar.gz
% cd vtun-3.0.1
% ./configure
% make
% make install

NFS Server

% vtund -n -f vtund.conf 2 [host]

vtund.conf:

options {
   port 5000;
   ifconfig   /sbin/ifconfig;
}
default {
   compress no;
   encrypt no;
   speed 0;
   keepalive yes;
   stat yes;
}

2 {
   passwd DEADBEEF;
   type tun;
   proto tcp;
   up {
     ifconfig
     "%% 192.168.1.1 pointopoint 192.168.1.2 mtu 1450";
   };
   down {
     ifconfig "%% down";
   };
}

/etc/exports:

/shared 192.168.1.0/255.255.255.0(sync,rw,no_root_squash)

NFS Client

% vtund -n -s -f vtund.conf

vtund.conf:

options {
   port 5000;
   ifconfig   /sbin/ifconfig;
}
default {
   compress no;
   encrypt no;
   speed 0;
   keepalive yes;
   stat yes;
}

2 {
   passwd DEADBEEF;
   type tun;
   proto tcp;
   up {
     ifconfig
     "%% 192.168.1.2 pointopoint 192.168.1.1 mtu 1450";
   };
   down {
     ifconfig "%% down";
   };
}

/etc/fstab:

192.168.1.1:/shared /shared nfs rw 0 0