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The roadwarrior <b>dave</b> tries to set up a connection to roadwarrior <b>carol</b>
but because <b>carol</b> has set the strongswan.conf option <b>initiator_only = yes</b>
she ignores the repeated IKE requests sent by <b>dave</b>.
<p/>
After the failed connection attempt by <b>dave</b>, roadwarrior <b>carol</b> sets up a
connection to gateway <b>moon</b>. The authentication is based on Suite B with 128 bit
security based on <b>X.509 ECDSA</b> certificates, <b>ECP Diffie-Hellman</b> groups and <b>AES-GCM</b>
authenticated encryption.
<p/>
Upon the successful establishment of the IPsec tunnel, the static IPsec policy rules of
an iptables-based firewall let pass the tunneled traffic. In order to test both tunnel and firewall,
<b>carol</b> pings the client <b>alice</b> behind the gateway <b>moon</b>.
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