Main                                 Brach
     10.17.8.0                            10.10.10.0
   +------------+                       +------------+
   |            |         OpenVPN       |            |
   |            |                       |            |
   |            | 10.8.0.1      10.8.0.2|            |
   |   Server   |'''''''''''''''''''''''|  Client    |
   |  10.17.8.5 |                       |10.10.10.20 |
   |            |                       |            |
   +------------+                       +------------+


Server configuration file
-------------------------
    dev tun
    ifconfig 10.8.0.1 10.8.0.2
    secret static.key
    comp-lzo
    keepalive 10 60
    ping-timer-rem
    persist-tun
    persist-key

    push "route 10.17.8.0 255.255.255.0"
    push "route 10.10.10.0 255.255.255.0"


Client configuration file
--------------------------
    remote myremote.mydomain
    dev tun
    ifconfig 10.8.0.2 10.8.0.1
    secret static.key
    comp-lzo
    keepalive 10 60
    ping-timer-rem
    persist-tun
    persist-key

    route 10.17.8.0 255.255.255.0