added dynamic DNS scenarios

2007-06-18 17:50:54 +00:00
parent 3b04350ab2
commit 571bca865b
31 changed files with 641 additions and 0 deletions
@@ -0,0 +1,13 @@
+The peers <b>carol</b> and <b>moon</b> both have dynamic IP addresses, so that the remote end
+is defined symbolically by <b>right=&lt;hostname&gt;</b>. The ipsec starter resolves the
+fully-qualified hostname into the current IP address via a DNS lookup (simulated by an
+/etc/hosts entry). Since the peer IP addresses are expected to change over time, the option
+<b>rightallowany=yes</b> will allow an IKE main mode rekeying to arrive from an arbitrary
+IP address under the condition that the peer identity remains unchanged. When this happens
+the old tunnel is replaced by an IPsec connection to the new origin.
+<p>
+In this scenario <b>moon</b> first initiates a tunnel to <b>carol</b>. After some time
+the responder <b>carol</b> suddenly changes her IP address and restarts the connection to
+<b>moon</b> without deleting the old tunnel first (simulated by iptables blocking IKE packets
+to and from <b>carol</b> and starting the connection from host <b>dave</b> using
+<b>carol</b>'s identity). 
@@ -0,0 +1,8 @@
+carol::ipsec status::moon.*STATE_QUICK_R2.*IPsec SA established::YES
+dave::ipsec status::moon.*STATE_QUICK_I2.*IPsec SA established::YES
+moon::cat /var/log/auth.log::PH_IP_CAROL.*IPsec SA established::YES
+moon::cat /var/log/auth.log::PH_IP_DAVE.*deleting connection.*with peer PH_IP_CAROL::YES 
+moon::cat /var/log/auth.log::PH_IP_DAVE.*IPsec SA established::YES
+dave::ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_seq=1::YES
+alice::tcpdump::IP carol1.strongswan.org > alice.strongswan.org: ICMP echo request::YES
+alice::tcpdump::IP alice.strongswan.org > carol1.strongswan.org: ICMP echo reply::YES
@@ -0,0 +1,29 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+	plutodebug=control
+	crlcheckinterval=180
+	strictcrlpolicy=no
+	charonstart=no
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+
+conn moon 
+	left=%defaultroute
+	leftsourceip=PH_IP_CAROL1
+	leftcert=carolCert.pem
+	[email protected]
+	leftfirewall=yes
+	right=moon.strongswan.org
+	rightallowany=yes
+	rightsubnet=10.1.0.0/16
+	[email protected]
+	auto=add
+
+
+
+
@@ -0,0 +1,29 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+	plutodebug=control
+	crlcheckinterval=180
+	strictcrlpolicy=no
+	charonstart=no
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+
+conn moon 
+	left=%defaultroute
+	leftsourceip=PH_IP_CAROL1
+	leftcert=carolCert.pem
+	[email protected]
+	leftfirewall=yes
+	right=moon.strongswan.org
+	rightallowany=yes
+	rightsubnet=10.1.0.0/16
+	[email protected]
+	auto=add
+
+
+
+
@@ -0,0 +1,25 @@
+-----BEGIN CERTIFICATE-----
+MIIEIjCCAwqgAwIBAgIBCjANBgkqhkiG9w0BAQQFADBFMQswCQYDVQQGEwJDSDEZ
+MBcGA1UEChMQTGludXggc3Ryb25nU3dhbjEbMBkGA1UEAxMSc3Ryb25nU3dhbiBS
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+C1INvsBWYtN62wjXlXXhM/M4sBFhmPpftVb+Amgr1jSspTX2dQsNqhI/WtNvLmfK
+omBYfxqp
+-----END CERTIFICATE-----
@@ -0,0 +1,30 @@
+-----BEGIN RSA PRIVATE KEY-----
+Proc-Type: 4,ENCRYPTED
+DEK-Info: DES-EDE3-CBC,1E1991A43D0778B7
+
+MAsd1YBlHz54KjvBvhpwDBewinBkxBo/NmdsMetLIcV8Ag87YcKtTXYju+fbW21y
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+tFFcbN8ucBozxtl4AX495GVSRI7V0XXBtEdOIwJIzPBylZOHxCuTnA==
+-----END RSA PRIVATE KEY-----
@@ -0,0 +1,3 @@
+# /etc/ipsec.secrets - strongSwan IPsec secrets file
+
+: RSA carolKey.pem "nH5ZQEWtku0RJEZ6"
@@ -0,0 +1,26 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+	plutodebug=control
+	crlcheckinterval=180
+	strictcrlpolicy=no
+	charonstart=no
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	left=%defaultroute
+	leftsubnet=10.1.0.0/16
+	leftsourceip=PH_IP_MOON1
+	leftcert=moonCert.pem
+	[email protected]
+	leftfirewall=yes
+
+conn carol
+	right=carol.strongswan.org
+	rightallowany=yes
+	[email protected]
+	rightsubnet=PH_IP_CAROL1/32
+	auto=add
@@ -0,0 +1,11 @@
+dave::ipsec stop
+carol::ipsec stop
+dave::sleep 1
+moon::ipsec stop
+moon::/etc/init.d/iptables stop 2> /dev/null
+carol::/etc/init.d/iptables stop 2> /dev/null
+dave::/etc/init.d/iptables stop 2> /dev/null
+carol::ip addr del PH_IP_CAROL1/32 dev eth0
+dave::ip addr del PH_IP_CAROL1/32 dev eth0
+dave::rm /etc/ipsec.d/certs/*
+dave::rm /etc/ipsec.d/private/*
@@ -0,0 +1,13 @@
+moon::/etc/init.d/iptables start 2> /dev/null
+carol::/etc/init.d/iptables start 2> /dev/null
+dave::/etc/init.d/iptables start 2> /dev/null
+carol::ipsec start
+dave::ipsec start
+moon::ipsec start
+moon::sleep 2
+moon::ipsec up carol
+moon::sleep 1
+carol::iptables -D INPUT  -i eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+carol::iptables -D OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+dave::ipsec up moon
+dave::sleep 1
@@ -0,0 +1,21 @@
+#!/bin/bash
+#
+# This configuration file provides information on the
+# UML instances used for this test
+
+# All UML instances that are required for this test
+#
+UMLHOSTS="alice moon carol winnetou dave"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w-d.png"
+
+# UML instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon alice"
+
+# UML instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol dave"