virtual-ip-override scenario added
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The roadwarriors <b>carol</b> and <b>dave</b> both set up a connection to gateway <b>moon</b>.
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The roadwarriors each unilaterally define a static virtual IP using the <b>leftsourceip</b>
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parameter. In order to detect potential address conflicts, the roadwarriors send
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their virtual IPs embedded in a configuration payload to <b>moon</b> for verification.
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In our scenario <b>carol</b> and <b>dave</b> both request the same IP address.
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These requests are overridden by gateway <b>moon</b> which assigns a
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distinct virtual IP to each road warrior.
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moon::ipsec statusall::rw.*ESTABLISHED.*carol@strongswan.org::YES
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moon::ipsec statusall::rw.*ESTABLISHED.*dave@strongswan.org::YES
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carol::ipsec statusall::home.*INSTALLED::YES
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dave::ipsec statusall::home.*INSTALLED::YES
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moon::cat /var/log/daemon.log::peer requested virtual IP PH_IP_CAROL1::YES
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moon::cat /var/log/daemon.log::peer requested virtual IP PH_IP_DAVE1::NO
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moon::cat /var/log/daemon.log::assigning virtual IP PH_IP_CAROL1 to peer::YES
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moon::cat /var/log/daemon.log::assigning virtual IP PH_IP_DAVE1 to peer::YES
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carol::ip addr list dev eth0::PH_IP_CAROL1::YES
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carol::ip route list dev eth0::src PH_IP_CAROL1::YES
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dave::ip addr list dev eth0::PH_IP_DAVE1::YES
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dave::ip route list dev eth0::src PH_IP_DAVE1::YES
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# /etc/ipsec.conf - strongSwan IPsec configuration file
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config setup
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crlcheckinterval=180
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strictcrlpolicy=no
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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 home
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left=PH_IP_CAROL
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leftsourceip=PH_IP_CAROL1
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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=PH_IP_MOON
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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/ipsec.conf - strongSwan IPsec configuration file
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config setup
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crlcheckinterval=180
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strictcrlpolicy=no
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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 home
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left=PH_IP_DAVE
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leftsourceip=PH_IP_CAROL1
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leftcert=daveCert.pem
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leftid=dave@strongswan.org
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leftfirewall=yes
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right=PH_IP_MOON
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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/ipsec.conf - strongSwan IPsec configuration file
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config setup
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crlcheckinterval=180
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strictcrlpolicy=no
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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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left=PH_IP_MOON
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leftsubnet=10.1.0.0/16
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leftsourceip=PH_IP_MOON1
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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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conn rw-carol
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right=%any
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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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conn rw-dave
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right=%any
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rightid=dave@strongswan.org
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rightsourceip=PH_IP_DAVE1
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auto=add
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moon::ipsec stop
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carol::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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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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carol::sleep 1
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carol::ipsec up home
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dave::ipsec up home
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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=""
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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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