The roadwarrior <b>carol</b> and the gateway <b>moon</b> use the <b>openssl</b>
plugin based on the <b>OpenSSL</b> library for all cryptographical and X.509 certificate
functions whereas roadwarrior <b>dave</b> uses the default <b>strongSwan</b> cryptographical
plugins <b>aes des sha1 sha2 hmac gmp</b> and <b>x509</b>.
<p/>
The roadwarriors <b>carol</b> and <b>dave</b> set up a connection each
to gateway <b>moon</b>. The authentication is based on <b>X.509 certificates</b>.
<p/>
Upon the successful establishment of the IPsec tunnels, the updown script
automatically inserts iptables-based firewall rules that let pass the tunneled traffic.
In order to test both tunnel and firewall, both <b>carol</b> and <b>dave</b> ping
the client <b>alice</b> behind the gateway <b>moon</b>.

