added ikev1/net2net-fragmentation scenario
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A connection between the subnets behind the gateways <b>moon</b> and <b>sun</b> is set up.
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The authentication is based on <b>X.509 certificates</b>. The proprietary IKEv1 fragmentation
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protocol prevents the IP fragmentation of the IKEv1 messages carrying the large X.509
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certificates.
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<p/>
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Upon the successful establishment of the IPsec tunnel, <b>leftfirewall=yes</b> automatically
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inserts iptables-based firewall rules that let pass the tunneled traffic.
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In order to test both tunnel and firewall, client <b>alice</b> behind gateway <b>moon</b>
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pings client <b>bob</b> located behind gateway <b>sun</b>.
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15
testing/tests/ikev1/net2net-fragmentation/evaltest.dat
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testing/tests/ikev1/net2net-fragmentation/evaltest.dat
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moon::cat /var/log/daemon.log::received FRAGMENTATION vendor ID::YES
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sun::cat /var/log/daemon.log::received FRAGMENTATION vendor ID::YES
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moon::cat /var/log/daemon.log::sending IKE message with length of 1468 bytes in 2 fragments::YES
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sun::cat /var/log/daemon.log::sending IKE message with length of 1388 bytes in 2 fragments::YES
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moon::cat /var/log/daemon.log::received fragment #1, waiting for complete IKE message::YES
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moon::cat /var/log/daemon.log::received fragment #2, reassembling fragmented IKE message::YES
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sun::cat /var/log/daemon.log::received fragment #1, waiting for complete IKE message::YES
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sun::cat /var/log/daemon.log::received fragment #2, reassembling fragmented IKE message::YES
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moon::ipsec status 2> /dev/null::net-net.*ESTABLISHED.*moon.strongswan.org.*sun.strongswan.org::YES
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sun:: ipsec status 2> /dev/null::net-net.*ESTABLISHED.*sun.strongswan.org.*moon.strongswan.org::YES
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moon::ipsec status 2> /dev/null::net-net.*INSTALLED, TUNNEL::YES
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sun:: ipsec status 2> /dev/null::net-net.*INSTALLED, TUNNEL::YES
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alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_req=1::YES
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sun::tcpdump::IP moon.strongswan.org > sun.strongswan.org: ESP::YES
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sun::tcpdump::IP sun.strongswan.org > moon.strongswan.org: ESP::YES
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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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=ikev1
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fragmentation=yes
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conn net-net
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left=PH_IP_MOON
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leftcert=moonCert.pem
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leftid=@moon.strongswan.org
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leftsubnet=10.1.0.0/16
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leftfirewall=yes
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right=PH_IP_SUN
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rightid=@sun.strongswan.org
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rightsubnet=10.2.0.0/16
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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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fragment_size = 1024
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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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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=ikev1
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fragmentation=yes
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conn net-net
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left=PH_IP_SUN
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leftcert=sunCert.pem
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leftid=@sun.strongswan.org
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leftsubnet=10.2.0.0/16
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leftfirewall=yes
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right=PH_IP_MOON
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rightid=@moon.strongswan.org
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rightsubnet=10.1.0.0/16
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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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fragment_size = 1024
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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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5
testing/tests/ikev1/net2net-fragmentation/posttest.dat
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testing/tests/ikev1/net2net-fragmentation/posttest.dat
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moon::ipsec stop
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sun::ipsec stop
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moon::iptables-restore < /etc/iptables.flush
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sun::iptables-restore < /etc/iptables.flush
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testing/tests/ikev1/net2net-fragmentation/pretest.dat
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6
testing/tests/ikev1/net2net-fragmentation/pretest.dat
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moon::iptables-restore < /etc/iptables.rules
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sun::iptables-restore < /etc/iptables.rules
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moon::ipsec start
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sun::ipsec start
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moon::sleep 1
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moon::ipsec up net-net
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testing/tests/ikev1/net2net-fragmentation/test.conf
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testing/tests/ikev1/net2net-fragmentation/test.conf
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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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# guest instances used for this test
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# All guest instances that are required for this test
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#
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VIRTHOSTS="alice moon winnetou sun bob"
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# Corresponding block diagram
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#
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DIAGRAM="a-m-w-s-b.png"
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# Guest instances on which tcpdump is to be started
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#
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TCPDUMPHOSTS="sun"
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# Guest 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 sun"
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