| A connection between the subnets behind the gateways <b>moon</b> and <b>sun</b> is set up. |
| The authentication is based on <b>X.509 certificates</b>. With <b>ah=sha256-sha384</b> |
| gateway <b>moon</b> proposes the use of <b>AH</b>. Gateway <b>sun</b> selects HMAC_SHA2_256_128 |
| for integrity protection with its <b>ah=sha256</b> configuration. |
| <p/> |
| Upon the successful establishment of the IPsec tunnel, the updown script automatically |
| inserts iptables-based firewall rules that let pass the tunneled traffic. |
| In order to test both tunnel and firewall, client <b>alice</b> behind gateway <b>moon</b> |
| pings client <b>bob</b> located behind gateway <b>sun</b>. |
