testing: Add ikev2/compress-nat scenario

testing/tests/ikev2/compress-nat/description.txt

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+The peers <b>alice</b> and <b>bob</b> are located behind the NAT routers <b>moon</b> and <b>sun</b>,
+respectively. They both connect to a central gateway <b>carol</b> using IPComp.
+In order to test the IPsec tunnel both peers ping each other and gateway <b>carol</b>.

testing/tests/ikev2/compress-nat/evaltest.dat

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+alice::ipsec status 2> /dev/null::hub.*ESTABLISHED.*[email protected].*[email protected]::YES
+bob::  ipsec status 2> /dev/null::hub.*ESTABLISHED.*[email protected].*[email protected]::YES
+carol::ipsec status 2> /dev/null::hub.*ESTABLISHED.*PH_IP_MOON.*[email protected]::YES
+carol::ipsec status 2> /dev/null::hub.*ESTABLISHED.*PH_IP_SUN.*[email protected]::YES
+alice::ipsec status 2> /dev/null::hub.*INSTALLED, TUNNEL.*IPCOMP::YES
+bob::  ipsec status 2> /dev/null::hub.*INSTALLED, TUNNEL.*IPCOMP::YES
+carol::ipsec status 2> /dev/null::hub.*INSTALLED, TUNNEL.*IPCOMP::YES
+carol::cat /var/log/daemon.log::IKE_AUTH request.*N(IPCOMP_SUP)::YES
+carol::cat /var/log/daemon.log::IKE_AUTH response.*N(IPCOMP_SUP)::YES
+alice::ip xfrm state::proto comp spi::YES
+bob::  ip xfrm state::proto comp spi::YES
+carol::ip xfrm state::proto comp spi::YES
+alice::ping -c 1 -s 8184 -p deadbeef PH_IP_CAROL::8192 bytes from PH_IP_CAROL: icmp_req=1::YES
+alice::ping -c 1 PH_IP_CAROL::64 bytes from PH_IP_CAROL: icmp_req=1::YES
+alice::ping -c 1 -s 8184 -p deadbeef PH_IP_BOB::8192 bytes from PH_IP_BOB: icmp_req=1::YES
+alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_req=1::YES
+bob::  ping -c 1 -s 8184 -p deadbeef PH_IP_ALICE::8192 bytes from PH_IP_ALICE: icmp_req=1::YES
+bob::  ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::YES
+moon::tcpdump::IP moon.strongswan.org.* > carol.strongswan.org.*: UDP::YES
+moon::tcpdump::IP carol.strongswan.org.* > moon.strongswan.org.*: UDP::YES
+sun::tcpdump::IP sun.strongswan.org.* > carol.strongswan.org.*: UDP::YES
+sun::tcpdump::IP carol.strongswan.org.* > sun.strongswan.org.*: UDP::YES

testing/tests/ikev2/compress-nat/hosts/alice/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	dpdaction=restart
+	dpddelay=60s
+	leftfirewall=yes
+	lefthostaccess=yes
+
+conn hub
+	leftcert=aliceCert.pem
+	[email protected]
+	leftsubnet=10.1.0.0/16
+	right=PH_IP_CAROL
+	[email protected]
+	rightsubnet=PH_IP_CAROL/32,10.2.0.0/16
+	compress=yes
+	auto=add

testing/tests/ikev2/compress-nat/hosts/alice/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ikev2/compress-nat/hosts/bob/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	dpdaction=restart
+	dpddelay=60s
+	leftfirewall=yes
+	lefthostaccess=yes
+
+conn hub
+	leftcert=bobCert.pem
+	[email protected]
+	leftsubnet=10.2.0.0/16
+	right=PH_IP_CAROL
+	[email protected]
+	rightsubnet=PH_IP_CAROL/32,10.1.0.0/16
+	compress=yes
+	auto=add

testing/tests/ikev2/compress-nat/hosts/bob/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ikev2/compress-nat/hosts/carol/etc/ipsec.conf

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+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	dpdaction=clear
+	dpddelay=60s
+
+conn hub
+	leftcert=carolCert.pem
+	[email protected]
+	leftfirewall=yes
+	lefthostaccess=yes
+	right=%any
+	leftsubnet=0.0.0.0/0
+	rightsubnet=0.0.0.0/0
+	compress=yes
+	auto=add

testing/tests/ikev2/compress-nat/hosts/carol/etc/iptables.rules

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+*filter
+
+# default policy is DROP
+-P INPUT DROP
+-P OUTPUT DROP
+-P FORWARD DROP
+
+# allow IKE
+-A INPUT  -i eth0 -p udp --dport 500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --sport 500 -j ACCEPT
+
+# allow MobIKE
+-A INPUT  -i eth0 -p udp --dport 4500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --sport 4500 -j ACCEPT
+
+# allow ssh
+-A INPUT  -p tcp --dport 22 -j ACCEPT
+-A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+# allow crl fetch from winnetou
+-A INPUT  -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+-A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+COMMIT

testing/tests/ikev2/compress-nat/hosts/carol/etc/strongswan.conf

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+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ikev2/compress-nat/posttest.dat

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+bob::ipsec stop
+alice::ipsec stop
+carol::ipsec stop
+alice::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush
+bob::iptables-restore < /etc/iptables.flush
+moon::iptables-restore < /etc/iptables.flush
+sun::iptables-restore < /etc/iptables.flush
+moon::conntrack -F
+sun::conntrack -F

testing/tests/ikev2/compress-nat/pretest.dat

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+alice::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+bob::iptables-restore < /etc/iptables.rules
+moon::iptables-restore < /etc/iptables.rules
+sun::iptables-restore < /etc/iptables.rules
+moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p udp -j SNAT --to-source PH_IP_MOON:1100-1200
+moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p tcp -j SNAT --to-source PH_IP_MOON:2000-2100
+moon::iptables -A FORWARD -i eth1 -o eth0 -s 10.1.0.0/16  -j ACCEPT
+moon::iptables -A FORWARD -i eth0 -o eth1 -d 10.1.0.0/16  -j ACCEPT
+sun::iptables -t nat -A POSTROUTING -o eth0 -s 10.2.0.0/16 -p udp -j SNAT --to-source PH_IP_SUN:1200-1300
+sun::iptables -t nat -A POSTROUTING -o eth0 -s 10.2.0.0/16 -p tcp -j SNAT --to-source PH_IP_SUN:2000-2100
+sun::iptables -A FORWARD -i eth1 -o eth0 -s 10.2.0.0/16 -j ACCEPT
+sun::iptables -A FORWARD -i eth0 -o eth1 -d 10.2.0.0/16 -j ACCEPT
+carol::ipsec start
+alice::ipsec start
+bob::ipsec start
+carol::expect-connection hub
+alice::expect-connection hub
+bob::expect-connection hub
+alice::ipsec up hub
+bob::ipsec up hub

testing/tests/ikev2/compress-nat/test.conf

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+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon carol winnetou sun bob"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w-s-b-med.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon sun"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="alice carol bob"