connections {

   mutual {
      local_addrs  = 192.168.0.1
      remote_addrs = 192.168.0.2 

      local {
         auth = eap-ttls
         certs = moonCert.pem
         id = moon.strongswan.org
      }
      remote {
         auth = eap-ttls
         id = sun.strongswan.org
         groups = allow
      }
      children {
         mutual {
            updown = /usr/local/libexec/ipsec/_updown iptables
            esp_proposals = aes128gcm16-ecp256
         }
      }
      version = 2
      mobike = no
      send_certreq = no
      proposals = aes128-sha256-ecp256
   }
}