added ikev2/dynamic-responder scenario
This commit is contained in:
Andreas Steffen
parent
420e77c2d0
commit
68f3e2462a
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The peers <b>carol</b> and <b>moon</b> both have dynamic IP addresses, so that the remote end
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is defined symbolically by <b>right=<hostname></b>. The ipsec starter resolves the
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fully-qualified hostname into the current IP address via a DNS lookup (simulated by an
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/etc/hosts entry). Since the peer IP addresses are expected to change over time, the option
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<b>rightallowany=yes</b> will allow an IKE main mode rekeying to arrive from an arbitrary
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IP address under the condition that the peer identity remains unchanged. When this happens
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the old tunnel is replaced by an IPsec connection to the new origin.
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<p>
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In this scenario <b>moon</b> first initiates a tunnel to <b>carol</b>. After some time
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the responder <b>carol</b> suddenly changes her IP address and restarts the connection to
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<b>moon</b> without deleting the old tunnel first (simulated by iptables blocking IKE packets
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to and from <b>carol</b> and starting the connection from host <b>dave</b> using
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<b>carol</b>'s identity).
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carol::ipsec status 2> /dev/null::moon.*ESTABLISHED.*carol.strongswan.org.*moon.strongswan.org::YES
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dave:: ipsec status 2> /dev/null::moon.*ESTABLISHED.*carol.strongswan.org.*moon.strongswan.org::YES
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carol::ipsec status 2> /dev/null::moon.*INSTALLED, TUNNEL::YES
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dave:: ipsec status 2> /dev/null::moon.*INSTALLED, TUNNEL::YES
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moon:: cat /var/log/auth.log::IKE_SA carol\[1] established.*PH_IP_CAROL::YES
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moon:: cat /var/log/daemon.log::destroying duplicate IKE_SA for.*carol@strongswan.org.*received INITIAL_CONTACT::YES
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moon:: cat /var/log/auth.log::IKE_SA carol\[2] established.*PH_IP_DAVE::YES
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dave:: ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_seq=1::YES
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alice::tcpdump::IP carol1.strongswan.org > alice.strongswan.org: ICMP echo request::YES
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alice::tcpdump::IP alice.strongswan.org > carol1.strongswan.org: ICMP echo reply::YES
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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plutostart=no
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conn %default
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ikelifetime=60m
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keylife=20m
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rekeymargin=3m
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keyingtries=1
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keyexchange=ikev2
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conn moon
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left=%any
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leftsourceip=%config
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leftcert=carolCert.pem
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leftid=carol@strongswan.org
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leftfirewall=yes
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right=%moon.strongswan.org
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rightsubnet=10.1.0.0/16
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rightid=@moon.strongswan.org
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auto=add
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac stroke kernel-netlink socket-default updown
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}
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libstrongswan {
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dh_exponent_ansi_x9_42 = no
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}
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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plutostart=no
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conn %default
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ikelifetime=60m
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keylife=20m
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rekeymargin=3m
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keyingtries=1
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keyexchange=ikev2
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conn moon
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left=%any
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leftsourceip=%config
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leftcert=carolCert.pem
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leftid=carol@strongswan.org
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leftfirewall=yes
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right=%moon.strongswan.org
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rightsubnet=10.1.0.0/16
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rightid=@moon.strongswan.org
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auto=add
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-----BEGIN CERTIFICATE-----
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MIIEIjCCAwqgAwIBAgIBHTANBgkqhkiG9w0BAQsFADBFMQswCQYDVQQGEwJDSDEZ
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MBcGA1UEChMQTGludXggc3Ryb25nU3dhbjEbMBkGA1UEAxMSc3Ryb25nU3dhbiBS
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b290IENBMB4XDTA5MDgyNzEwNDQ1MVoXDTE0MDgyNjEwNDQ1MVowWjELMAkGA1UE
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BhMCQ0gxGTAXBgNVBAoTEExpbnV4IHN0cm9uZ1N3YW4xETAPBgNVBAsTCFJlc2Vh
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cmNoMR0wGwYDVQQDFBRjYXJvbEBzdHJvbmdzd2FuLm9yZzCCASIwDQYJKoZIhvcN
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AQEBBQADggEPADCCAQoCggEBANBdWU+BF7x4lyo+xHnr4UAOU89yQQuT5vdPoXzx
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6kRPsjYAuuktgXR+SaLkQHw/YRgDPSKj5nzmmlOQf/rWRr+8O2q+C92aUICmkNvZ
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Gamo5w2WlOMZ6T5dk2Hv+QM6xT/GzWyVr1dMYu/7tywD1Bw7aW/HqkRESDu6q95V
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Wu+Lzg6XlxCNEez0YsZrN/fC6BL2qzKAqMBbIHFW8OOnh+nEY4IF5AzkZnFrw12G
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I72Z882pw97lyKwZhSz/GMQFBJx+rnNdw5P1IJwTlG5PUdoDCte/Mcr1iiA+zOov
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x55x1GoGxduoXWU5egrf1MtalRf9Pc8Xr4q3WEKTAmsZrVECAwEAAaOCAQYwggEC
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MAkGA1UdEwQCMAAwCwYDVR0PBAQDAgOoMB0GA1UdDgQWBBQfoamI2WSMtaCiVGQ5
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tPI9dF1ufDBtBgNVHSMEZjBkgBRdp91wBlEyfue2bbO15eBg6i5N76FJpEcwRTEL
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MAkGA1UEBhMCQ0gxGTAXBgNVBAoTEExpbnV4IHN0cm9uZ1N3YW4xGzAZBgNVBAMT
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EnN0cm9uZ1N3YW4gUm9vdCBDQYIBADAfBgNVHREEGDAWgRRjYXJvbEBzdHJvbmdz
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d2FuLm9yZzA5BgNVHR8EMjAwMC6gLKAqhihodHRwOi8vY3JsLnN0cm9uZ3N3YW4u
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b3JnL3N0cm9uZ3N3YW4uY3JsMA0GCSqGSIb3DQEBCwUAA4IBAQC8pqX3KrSzKeul
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GdzydAV4hGwYB3WiB02oJ2nh5MJBu7J0Kn4IVkvLUHSSZhSRxx55tQZfdYqtXVS7
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ZuyG+6rV7sb595SIRwfkLAdjbvv0yZIl4xx8j50K3yMR+9aXW1NSGPEkb8BjBUMr
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F2kjGTOqomo8OIzyI369z9kJrtEhnS37nHcdpewZC1wHcWfJ6wd9wxmz2dVXmgVQ
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L2BjXd/BcpLFaIC4h7jMXQ5FURjnU7K9xSa4T8PpR6FrQhOcIYBXAp94GiM8JqmK
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ZBGUpeP+3cy4i3DV18Kyr64Q4XZlzhZClNE43sgMqiX88dc3znpDzT7T51j+d+9k
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Rf5Z0GOR
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-----END CERTIFICATE-----
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-----BEGIN RSA PRIVATE KEY-----
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Proc-Type: 4,ENCRYPTED
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DEK-Info: AES-128-CBC,01290773006220E4E96C2975C52D2429
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mSt4HT52dsYkDwk6DVYm+Uij1PnFAnYzJD7Jx6EJIA9HuWKfyHPSjtqEcCwZoKHq
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i18EuCZHkdMBc8+lY0iEpNwbs3UbCP73lGn+IIjlOrS0xi4PP9iV1jxg/k+WF4rH
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jhIUhi3wc1cAaFLLj8bBvnx6t4mF3nTZZ119wSsa5ewy5RZGWcdN8NKtyNgFYTFx
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m5ACRErFuq8aFmcKVgwzLZH+e9fd7xKHS7XoP9vla7+iKkW5bzfkGP5E8irbOqce
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pyUE81FrD8irD0uK4mnrMRDDGrD02mYNSMGyhT5o1RDQJbaRupih9nU+SaTR2Kxq
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J/ScYak4EwmCIXixwuhwokDPTB1EuyQ1h5ywarkgt1TCZKoI2odqoILB2Dbrsmdf
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dKLqI8Q/kR4h5meCc0e3401VXIaOJWk5GMbxz+6641uWnTdLKedzC5gWCI7QIDFB
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h5n5m3tsSe6LRksqJpgPL/+vV/r+OrNEi4KGK9NxETZxeb/7gBSVFWbDXH5AO+wC
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/RlPYHaoDt+peRm3LUDBGQBPtvZUDiDHlW4v8wtgCEZXAPZPdaFRUSDYMYdbbebY
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EsxWa6G00Gau08EOPSgFIReGuACRkP4diiSE4ZTiC9HD2cuUN/D01ck+SD6UgdHV
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pyf6tHej/AdVG3HD5dRCmCCyfucW0gS7R+/+C4DzVHwZKAXJRSxmXLOHT0Gk8Woe
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sM8gbHOoV8OfLAfZDwibvnDq7rc82q5sSiGOKH7Fg5LYIjRB0UazCToxGVtxfWMz
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kPrzZiQT45QDa3gQdkHzF21s+fNpx/cZ1V1Mv+1E3KAX9XsAm/sNl0NAZ6G0AbFk
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gHIWoseiKxouTCDGNe/gC40r9XNhZdFCEzzJ9A77eScu0aTa5FHrC2w9YO2wHcja
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OT2AyZrVqOWB1/hIwAqk8ApXA3FwJbnQE0FxyLcYiTvCNM+XYIPLstD09axLFb53
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D4DXEncmvW4+axDg8G3s84olPGLgJL3E8pTFPYWHKsJgqsloAc/GD2Qx0PCinySM
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bVQckgzpVL3SvxeRRfx8SHl9F9z+GS4gZtM/gT9cDgcVOpVQpOcln5AR/mF/aoyo
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BW96LSmEk5l4yeBBba63Qcz1HRr2NSvXJuqdjw6qTZNBWtjmSxHywKZYRlSqzNZx
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7B6DGHTIOfGNhcy2wsd4cuftVYByGxfFjw7bHIDa4/ySdDykL7J+REfg8QidlCJB
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UN/2VjaNipQo38RczWLUfloMkMMrWYpXOm9koes+Vldm7Bco+eCONIS50DJDOhZs
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H037A+UMElXmtCrHPJGxQf8k1Qirn6BWOuRmXg8sXqeblIrPlZU+DghYXzA/nRxB
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y+nUx+Ipbj022uJNVtFwhP70TIqYm/O6Ol/zRbo6yRsR6uEnnb4wRi5IxHnM/iGA
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zWPzLRDSeVPkhu2pZ7JygabCiXbbgFTN1enJvLWvIAcB0LS8wQz0yKQ7oj32T0Ty
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AD3c/qS8kmsrZDe3H+lEfMCcJRnHUrR/SBChSdx7LF9mnLlWuJLLHmrz87x7Z2o6
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nuRU15U5aQTniVikvFWchnwGy+23lgv5He9X99jxEu/U1pA4egejfMs3g070AY3J
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-----END RSA PRIVATE KEY-----
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# /etc/ipsec.secrets - strongSwan IPsec secrets file
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: RSA carolKey.pem "nH5ZQEWtku0RJEZ6"
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac stroke kernel-netlink socket-default updown
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}
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libstrongswan {
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dh_exponent_ansi_x9_42 = no
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}
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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plutostart=no
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conn %default
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ikelifetime=60m
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keylife=20m
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rekeymargin=3m
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keyingtries=1
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keyexchange=ikev2
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conn carol
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left=%any
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leftsubnet=10.1.0.0/16
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leftcert=moonCert.pem
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leftid=@moon.strongswan.org
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leftfirewall=yes
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right=%carol.strongswan.org
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rightid=carol@strongswan.org
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rightsourceip=PH_IP_CAROL1
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auto=add
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# /etc/strongswan.conf - strongSwan configuration file
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charon {
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load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac stroke kernel-netlink socket-default updown
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}
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libstrongswan {
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dh_exponent_ansi_x9_42 = no
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}
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dave::ipsec stop
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carol::ipsec stop
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dave::sleep 1
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moon::ipsec stop
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moon::/etc/init.d/iptables stop 2> /dev/null
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carol::/etc/init.d/iptables stop 2> /dev/null
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dave::/etc/init.d/iptables stop 2> /dev/null
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carol::ip addr del PH_IP_CAROL1/32 dev eth0
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dave::ip addr del PH_IP_CAROL1/32 dev eth0
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dave::rm /etc/ipsec.d/certs/*
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dave::rm /etc/ipsec.d/private/*
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moon::/etc/init.d/iptables start 2> /dev/null
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carol::/etc/init.d/iptables start 2> /dev/null
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dave::/etc/init.d/iptables start 2> /dev/null
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carol::ipsec start
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dave::ipsec start
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moon::ipsec start
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moon::sleep 2
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moon::ipsec up carol
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moon::sleep 1
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carol::iptables -D INPUT -i eth0 -p udp --dport 500 --sport 500 -j ACCEPT
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carol::iptables -D OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
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dave::ipsec up moon
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dave::sleep 2
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#!/bin/bash
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#
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# This configuration file provides information on the
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# UML instances used for this test
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# All UML instances that are required for this test
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#
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UMLHOSTS="alice moon carol winnetou dave"
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# Corresponding block diagram
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#
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DIAGRAM="a-m-c-w-d.png"
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# UML instances on which tcpdump is to be started
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#
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TCPDUMPHOSTS="moon alice"
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# UML instances on which IPsec is started
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# Used for IPsec logging purposes
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#
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IPSECHOSTS="moon carol dave"
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