<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>.
-Upon the successful establishment of the IPsec tunnels, <b>leftfirewall=yes</b>
-automatically inserts iptables-based firewall rules that let pass the tunneled traffic.
+Upon the successful establishment of the IPsec tunnel automatically iptables-based
+firewall rules are inserted which 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>.