Slackware 13.1 - Installing vtund (with epkg)
=================================

Public domain
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### Installation

    cd /usr/src
    wget http://sourceforge.net/projects/vtun/files/vtun/3.0.2/vtun-3.0.2.tar.gz
    su - install
    cd /usr/src
    tar xf vtun-3.0.2.tar.gz
    cd vtun-3.0.2
    ./configure --prefix=/usr/ --sysconfdir=/etc/vtun/ --localstatedir=/var/
    make
    sed -ie 's,-o root -g 0,,' Makefile
    make install DESTDIR=/usr/local/encap/vtun-3.0.2
    cd /usr/local/encap
    mkencap vtun-3.0.2/
    logout
    cd /usr/local/encap
    epkg vtun-3.0.2

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### Server config: /etc/vtun/vtund.conf 

    options {
      port       7051;
      bindaddr {
        iface eth0;
      };
    }

    default {
      #type      ether;
      type      tun;
      proto     tcp;
      keepalive yes;
      compress  no;
      speed     0;
    }

    user1 {
      device tap-user1;
      passwd 12345678;
      persist yes;
      stat yes;
      up {
        ifconfig "%d up";
        ifconfig "eth3 0.0.0.0 up";
        program /sbin/brctl "addbr br-user1"      wait;
        program /sbin/brctl "addif br-user1 eth3" wait;
        program /sbin/brctl "addif br-user1 %d"   wait;
        ifconfig "br-user1 up";
      };
      down {
        ifconfig "%d down";
        #ifconfig "br-user1 down";
        #program /sbin/brctl "delbr br-user1" wait;
      };
    }

    user2 {
      passwd 654321; 
      stat yes;
      up {
        ifconfig "%d up";
        ifconfig "eth1 0.0.0.0 up";
        program /sbin/brctl "addbr br0"      wait;
        program /sbin/brctl "addif br0 eth1" wait;
        program /sbin/brctl "addif br0 %d"   wait;
        ifconfig "br0 8.11.14.3 netmask 255.255.255.240";
        ifconfig "br0:0 72.3.98.2   netmask 255.255.255.0";
        ifconfig "br0:1 72.3.98.4   netmask 255.255.255.0";
        route "add default gw 80.191.194.17";
        route "add -net 10.103.20.80/28 gw 80.191.194.28";
      };
      down {
        ifconfig "%d down";
        ifconfig "br0 down";
        program /sbin/brctl "delbr br0" wait;
      };
    }

********************************************************************************
### Server invocation

    modprobe tun
    vtund -s -f /etc/vtun/vtund.conf

********************************************************************************
### Client config: /etc/vtun/vtund.conf

    options {
      port       7051;
    }

    default {
      type      tun;
      proto     tcp;
      keepalive yes;
    }

    user1 {
      device tun-user1;
      persist yes;
      passwd 123456;
      up {
        ifconfig "%% 8.11.22.6 pointopoint 8.19.22.7";
        route "del default";
        route "add default dev %%";
        program "/bin/echo 1 > /proc/sys/net/ipv4/ip_forward"; 
      };
      down {
        ifconfig "%% down";
        route "del default";
        route "add default gw 10.10.1.6";
        program "/bin/echo 0 > /proc/sys/net/ipv4/ip_forward"; 
      };
    }

********************************************************************************
### Client invocation

    route add -host 10.10.20.6  gw 10.10.1.6
    modprobe tun
    modprobe nf_nat_ftp
    iptables -t nat -A POSTROUTING -o tun-user1 -j MASQUERADE
    vtund user1 10.10.2.6

********************************************************************************
### Debug invocation with -n

    modprobe tun
    vtund -n -s -f /etc/vtun/vtund.conf

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_BY: Pejman Moghadam_  
_TAG: epkg, vtun, tap, tun_  
_DATE: 2011-05-10 11:41:36_