Commit aced9a6d36 for strongswan.org
commit aced9a6d36baed1c61bcb2a8fbf5b5f6e3066b45
Author: Tobias Brunner <tobias@strongswan.org>
Date: Wed Apr 15 16:08:14 2026 +0200
testing: Add ikev2/mobike-iptfs scenario
diff --git a/testing/tests/ikev2/mobike-iptfs/description.txt b/testing/tests/ikev2/mobike-iptfs/description.txt
new file mode 100644
index 0000000000..fde2b58af6
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/description.txt
@@ -0,0 +1,13 @@
+The roadwarrior <b>alice</b> is sitting behind the NAT router <b>moon</b> but
+at the outset of the scenario is also directly connected to the 192.168.0.0/24 network
+via an additional <b>eth1</b> interface. <b>alice</b> builds up a tunnel to gateway <b>sun</b>
+in order to reach <b>bob</b> in the subnet behind. IP-TFS (RFC 9347) is used to
+aggregate small packets into a single ESP packets and fragment large packets across
+multiple ESP packets.
+<p/>
+When the <b>eth1</b> interface goes away, <b>alice</b> switches to <b>eth0</b> and
+signals the IP address change via a MOBIKE ADDRESS_UPDATE notification to peer
+<b>sun</b>. Later the interface comes back up again and because the best path is
+preferred (charon-systemd.prefer_best_path), there is another switch to the
+directly connected path. <b>alice</b> sets a virtual IP of 10.3.0.3, so that
+the IPsec policies don't have to be changed.
diff --git a/testing/tests/ikev2/mobike-iptfs/evaltest.dat b/testing/tests/ikev2/mobike-iptfs/evaltest.dat
new file mode 100644
index 0000000000..b385c2275c
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/evaltest.dat
@@ -0,0 +1,25 @@
+alice::swanctl --list-sas --raw 2> /dev/null::mobike.*state=ESTABLISHED local-host=192.168.0.50 local-port=4500 local-id=alice@strongswan.org remote-host=PH_IP_SUN remote-port=4500 remote-id=sun.strongswan.org.*protocol=ESP spi-in.*local-ts=\[10.3.0.3/32] remote-ts=\[10.2.0.0/16]::YES
+sun:: swanctl --list-sas --raw 2> /dev/null::mobike.*state=ESTABLISHED local-host=PH_IP_SUN local-port=4500 local-id=sun.strongswan.org remote-host=192.168.0.50 remote-port=4500 remote-id=alice@strongswan.org.*protocol=ESP spi-in.*local-ts=\[10.2.0.0/16] remote-ts=\[10.3.0.3/32]::YES
+alice::ping -c 4 -i 0.1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=.::4
+alice::ifdown eth1
+alice::sleep 1
+alice::swanctl --list-sas --raw 2> /dev/null::mobike.*state=ESTABLISHED local-host=PH_IP_ALICE local-port=4500 local-id=alice@strongswan.org remote-host=PH_IP_SUN remote-port=4500 remote-id=sun.strongswan.org.*protocol=ESP encap=yes spi-in.*local-ts=\[10.3.0.3/32] remote-ts=\[10.2.0.0/16]::YES
+sun:: swanctl --list-sas --raw 2> /dev/null::mobike.*state=ESTABLISHED local-host=PH_IP_SUN local-port=4500 local-id=sun.strongswan.org remote-host=PH_IP_MOON remote-port=1... remote-id=alice@strongswan.org.*protocol=ESP encap=yes spi-in.*local-ts=\[10.2.0.0/16] remote-ts=\[10.3.0.3/32]::YES
+alice::ping -c 4 -i 0.1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=.::4
+alice::ifup eth1
+alice::sleep 1
+alice::ping -c 4 -i 0.1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_.eq=.::4
+alice::swanctl --list-sas --raw 2> /dev/null::mobike.*state=ESTABLISHED local-host=192.168.0.50 local-port=4500 local-id=alice@strongswan.org remote-host=PH_IP_SUN remote-port=4500 remote-id=sun.strongswan.org.*protocol=ESP spi-in.*local-ts=\[10.3.0.3/32] remote-ts=\[10.2.0.0/16]::YES
+sun:: swanctl --list-sas --raw 2> /dev/null::mobike.*state=ESTABLISHED local-host=PH_IP_SUN local-port=4500 local-id=sun.strongswan.org remote-host=192.168.0.50 remote-port=4500 remote-id=alice@strongswan.org.*protocol=ESP spi-in.*local-ts=\[10.2.0.0/16] remote-ts=\[10.3.0.3/32]::YES
+sun::tcpdump::alice1.strongswan.org.*sun.strongswan.org: ESP.*seq=0x1::YES
+sun::tcpdump::sun.strongswan.org.*alice1.strongswan.org: ESP.*seq=0x1::YES
+moon::tcpdump::moon.strongswan.org.*sun.strongswan.org.*: ESP.*seq=0x2::YES
+moon::tcpdump::sun.strongswan.org.*moon.strongswan.org.*: ESP.*seq=0x2::YES
+sun::tcpdump::alice1.strongswan.org.*sun.strongswan.org: ESP.*seq=0x3::YES
+sun::tcpdump::sun.strongswan.org.*alice1.strongswan.org: ESP.*seq=0x3::YES
+sun::tcpdump::alice1.strongswan.org.*sun.strongswan.org: ESP::2
+sun::tcpdump::sun.strongswan.org.*alice1.strongswan.org: ESP::2
+moon::tcpdump::moon.strongswan.org.*sun.strongswan.org.*: ESP::1
+moon::tcpdump::sun.strongswan.org.*moon.strongswan.org.*: ESP::1
+bob::tcpdump::10.3.0.3.*bob.strongswan.org.*ICMP echo request::12
+bob::tcpdump::bob.strongswan.org.*10.3.0.3.*ICMP echo reply::12
diff --git a/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/iptables.rules b/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/iptables.rules
new file mode 100644
index 0000000000..450e7cef6d
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/iptables.rules
@@ -0,0 +1,42 @@
+*filter
+
+# default policy is DROP
+-P INPUT DROP
+-P OUTPUT DROP
+-P FORWARD DROP
+
+# allow traffic on lo as ifup/ifdown call bind's rndc which accesses TCP 953
+-A OUTPUT -o lo -j ACCEPT
+-A INPUT -i lo -j ACCEPT
+
+# allow IPsec tunnel traffic
+-A INPUT -m policy --dir in --pol ipsec --proto esp -j ACCEPT
+-A OUTPUT -m policy --dir out --pol ipsec --proto esp -j ACCEPT
+
+# allow ESP
+-A INPUT -i eth0 -p 50 -j ACCEPT
+-A INPUT -i eth1 -p 50 -j ACCEPT
+-A OUTPUT -o eth0 -p 50 -j ACCEPT
+-A OUTPUT -o eth1 -p 50 -j ACCEPT
+
+# allow IKE
+-A INPUT -i eth0 -p udp --sport 500 --dport 500 -j ACCEPT
+-A INPUT -i eth1 -p udp --sport 500 --dport 500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --dport 500 --sport 500 -j ACCEPT
+-A OUTPUT -o eth1 -p udp --dport 500 --sport 500 -j ACCEPT
+
+# allow MobIKE
+-A INPUT -i eth0 -p udp --sport 4500 --dport 4500 -j ACCEPT
+-A INPUT -i eth1 -p udp --sport 4500 --dport 4500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --dport 4500 --sport 4500 -j ACCEPT
+-A OUTPUT -o eth1 -p udp --dport 4500 --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 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+-A OUTPUT -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+COMMIT
diff --git a/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/strongswan.conf b/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/strongswan.conf
new file mode 100644
index 0000000000..0cca6c4df2
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/strongswan.conf
@@ -0,0 +1,19 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+ swanctl {
+ load = pem pkcs1 pubkey openssl random
+}
+
+charon-systemd {
+ load = random nonce openssl pem pkcs1 revocation constraints pubkey curl kernel-netlink socket-default resolve updown vici
+ prefer_best_path = yes
+ iptfs {
+ # set to 0.5 seconds for test purposes
+ init_delay = 500000
+ }
+ syslog {
+ daemon {
+ knl = 2
+ }
+ }
+}
diff --git a/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/swanctl/swanctl.conf b/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/swanctl/swanctl.conf
new file mode 100644
index 0000000000..ccf02b8bfd
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/hosts/alice/etc/swanctl/swanctl.conf
@@ -0,0 +1,25 @@
+connections {
+
+ mobike {
+ remote_addrs = PH_IP_SUN
+
+ vips = 0.0.0.0
+
+ local {
+ auth = pubkey
+ certs = aliceCert.pem
+ id = alice@strongswan.org
+ }
+ remote {
+ auth = pubkey
+ id = sun.strongswan.org
+ }
+ children {
+ mobike {
+ remote_ts = 10.2.0.0/16
+
+ mode = iptfs
+ }
+ }
+ }
+}
diff --git a/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/iptables.rules b/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/iptables.rules
new file mode 100644
index 0000000000..929b1b2473
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/iptables.rules
@@ -0,0 +1,32 @@
+*filter
+
+# default policy is DROP
+-P INPUT DROP
+-P OUTPUT DROP
+-P FORWARD DROP
+
+# allow IPsec tunnel traffic
+-A FORWARD -m policy --dir in --pol ipsec --proto esp -j ACCEPT
+-A FORWARD -m policy --dir out --pol ipsec --proto esp -j ACCEPT
+
+# allow ESP
+-A INPUT -i eth0 -p 50 -j ACCEPT
+-A OUTPUT -o eth0 -p 50 -j ACCEPT
+
+# 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
diff --git a/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/strongswan.conf b/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/strongswan.conf
new file mode 100644
index 0000000000..a062205eb3
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/strongswan.conf
@@ -0,0 +1,15 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+ swanctl {
+ load = pem pkcs1 pubkey openssl random
+}
+
+charon-systemd {
+ load = random nonce openssl pem pkcs1 revocation constraints pubkey curl kernel-netlink socket-default resolve updown vici
+
+ syslog {
+ daemon {
+ knl = 2
+ }
+ }
+}
diff --git a/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/swanctl/swanctl.conf b/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/swanctl/swanctl.conf
new file mode 100644
index 0000000000..35d09b7963
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/hosts/sun/etc/swanctl/swanctl.conf
@@ -0,0 +1,31 @@
+connections {
+
+ mobike {
+ local_addrs = PH_IP_SUN
+
+ pools = mobike
+
+ local {
+ auth = pubkey
+ certs = sunCert.pem
+ id = sun.strongswan.org
+ }
+ remote {
+ auth = pubkey
+ id = alice@strongswan.org
+ }
+ children {
+ mobike {
+ local_ts = 10.2.0.0/16
+
+ mode = iptfs
+ }
+ }
+ }
+}
+
+pools {
+ mobike {
+ addrs = 10.3.0.3/32
+ }
+}
diff --git a/testing/tests/ikev2/mobike-iptfs/posttest.dat b/testing/tests/ikev2/mobike-iptfs/posttest.dat
new file mode 100644
index 0000000000..191807083f
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/posttest.dat
@@ -0,0 +1,6 @@
+alice::systemctl stop strongswan
+sun::systemctl stop strongswan
+alice::ifdown eth1
+alice::iptables-restore < /etc/iptables.flush
+sun::iptables-restore < /etc/iptables.flush
+moon::iptables -t nat -F
diff --git a/testing/tests/ikev2/mobike-iptfs/pretest.dat b/testing/tests/ikev2/mobike-iptfs/pretest.dat
new file mode 100644
index 0000000000..f85875988d
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/pretest.dat
@@ -0,0 +1,10 @@
+alice::ifup eth1
+alice::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:1024-1100
+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
+alice::systemctl start strongswan
+sun::systemctl start strongswan
+alice::expect-connection mobike
+sun::expect-connection mobike
+alice::swanctl --initiate --child mobike 2> /dev/null
diff --git a/testing/tests/ikev2/mobike-iptfs/test.conf b/testing/tests/ikev2/mobike-iptfs/test.conf
new file mode 100644
index 0000000000..c3c41f5f06
--- /dev/null
+++ b/testing/tests/ikev2/mobike-iptfs/test.conf
@@ -0,0 +1,24 @@
+#!/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 winnetou sun bob"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-w-s-b.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="bob moon sun"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="alice sun"
+
+# charon controlled by swanctl
+SWANCTL=1