OpenVPN

Revision as of 16:48, 5 November 2011

Client

Create a new key

   $ openssl genrsa -aes256 -out 0x20-vpn-your_name_here.key 2048

Create a Certificate signing request

   $ openssl req -new -key 0x20-vpn-your_name_here.key -out 0x20-vpn-your_name_here.csr
           countryName               = BE
           stateOrProvinceName       = Ghent
           organizationName          = 0x20
           organizationalUnitName    = members
           commonName                = your_name_here

Get your certificate signed

Mail your CSR(certificate signing request) to someone who has access to the 0x20 CA. Best is being physically present in the space.

Sign cert:

   $ openssl ca -in ../0x20-vpn-your_name_here.csr -cert ca-0x20-cert.pem -keyfile private/ca-0x20-key.pem -out 0x20-vpn-your_name_here.cert -config ./openssl.cnf

Client config Linux

• apt-get install openvpn
• create following config file: /etc/openvpn/0x20-vpn.conf and change values in bold

   client
   remote members.0x20.be 1194
   proto udp 
   dev tun  
   
   resolv-retry infinite
   nobind
   
   user nobody
   group nogroup
       
   persist-key
   persist-tun
   
   ca certs/ca-0x20-cert.pem
   cert certs/0x20-vpn-<name>.cert
   key certs/0x20-vpn-<name>.key
   
   ns-cert-type server
   
   # If a tls-auth key is used on the server
   # then every client must also have the key.
   ;tls-auth ta.key 1
  
   cipher AES-256-CBC
   comp-lzo
   
   verb 3
   mute 20

Server

The virtual network exist out of two parts: 1) a point-to-point vpn that connects the big pipe server at the ibbt with the the whitespace network 2) a server-client vpn that allows users to