From b7d3349000f70c250ccb4cf2b9e158376ca3339a Mon Sep 17 00:00:00 2001 From: Tobias Brunner Date: Wed, 16 Jun 2021 09:45:57 +0200 Subject: [PATCH] testing: Add ikev2/per-cpu-sas-encap-transport scenario Tests transport mode and UDP encapsulation with random source ports. Interestingly, the responder always uses the same SA to respond (maybe due to the cache on the policy). --- .../description.txt | 13 ++++ .../per-cpu-sas-encap-transport/evaltest.dat | 78 +++++++++++++++++++ .../hosts/moon/etc/strongswan.conf | 15 ++++ .../hosts/moon/etc/swanctl/swanctl.conf | 32 ++++++++ .../hosts/sun/etc/strongswan.conf | 15 ++++ .../hosts/sun/etc/swanctl/swanctl.conf | 32 ++++++++ .../per-cpu-sas-encap-transport/posttest.dat | 5 ++ .../per-cpu-sas-encap-transport/pretest.dat | 14 ++++ .../per-cpu-sas-encap-transport/test.conf | 25 ++++++ 9 files changed, 229 insertions(+) create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/description.txt create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/evaltest.dat create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/strongswan.conf create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/swanctl/swanctl.conf create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/strongswan.conf create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/swanctl/swanctl.conf create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/posttest.dat create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/pretest.dat create mode 100755 testing/tests/ikev2/per-cpu-sas-encap-transport/test.conf diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/description.txt b/testing/tests/ikev2/per-cpu-sas-encap-transport/description.txt new file mode 100755 index 0000000000..d10f563f85 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/description.txt @@ -0,0 +1,13 @@ +The two hosts moon and sun are configured to use per-CPU +CHILD_SAs in transport mode in order to improve performance. Using the +taskset utility pings are sent from different CPUs triggering the +creation of additional SA via the installed trap policy. The first ping triggers +the creation of a fallback SA that's used while per-CPU SAs are created for +later packets. Note that responses sent from the peer may create per-CPU SAs +that are not triggered by local acquires. +

+UDP encapsulation is forced and the special value encap is used when +enabling per-CPU SAs to force random source ports for the outbound SAs. +

+The updown script automatically inserts iptables-based firewall rules +that let pass the tunneled traffic. diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/evaltest.dat b/testing/tests/ikev2/per-cpu-sas-encap-transport/evaltest.dat new file mode 100755 index 0000000000..e4ea4cfaa3 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/evaltest.dat @@ -0,0 +1,78 @@ +moon::swanctl --list-pols --raw 2> /dev/null::net-net.*mode=TRANSPORT local-ts=\[PH_IP_MOON/32] remote-ts=\[PH_IP_SUN/32]::YES +moon::cat /var/log/daemon.log::creating acquire job for policy PH_IP_MOON/32\[icmp/8] === PH_IP_SUN/32\[icmp/8]::YES +moon::cat /var/log/daemon.log::creating acquire job for policy PH_IP_MOON/32\[icmp/8] === PH_IP_SUN/32\[icmp/8].*cpu::NO +moon::swanctl --list-sas --raw 2> /dev/null::gw-gw.*version=2 state=ESTABLISHED local-host=192.168.0.1 local-port=4500 local-id=moon.strongswan.org remote-host=192.168.0.2 remote-port=4500 remote-id=sun.strongswan.org initiator=yes.*encr-alg=AES_CBC encr-keysize=128 integ-alg=HMAC_SHA2_256_128 prf-alg=PRF_HMAC_SHA2_256 dh-group=CURVE_25519.*child-sas.*net-net.*state=INSTALLED mode=TRANSPORT.*ESP.*per-cpu-sas=yes.*encr-alg=AES_GCM_16 encr-keysize=128.*local-ts=\[PH_IP_MOON/32] remote-ts=\[PH_IP_SUN/32]::YES +sun:: swanctl --list-sas --raw 2> /dev/null::gw-gw.*version=2 state=ESTABLISHED local-host=192.168.0.2 local-port=4500 local-id=sun.strongswan.org remote-host=192.168.0.1 remote-port=4500 remote-id=moon.strongswan.org.*encr-alg=AES_CBC encr-keysize=128 integ-alg=HMAC_SHA2_256_128 prf-alg=PRF_HMAC_SHA2_256 dh-group=CURVE_25519.*child-sas.*net-net.*state=INSTALLED mode=TRANSPORT.*ESP.*per-cpu-sas=yes.*encr-alg=AES_GCM_16 encr-keysize=128.*local-ts=\[PH_IP_SUN/32] remote-ts=\[PH_IP_MOON/32]::YES +# this triggers a per-CPU SA for CPU 1 and creates one for CPU 3 as responder, +# the packet is sent and received via fallback SA +moon::taskset -c 1 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::cat /var/log/daemon.log::creating acquire job for policy PH_IP_MOON/32\[icmp/8] === PH_IP_SUN/32\[icmp/8].*cpu {1}::YES +moon::swanctl --list-sas --child-id 2 --raw 2> /dev/null::child-sas.*net-net.*packets-in=1.*packets-out=1::YES +moon::swanctl --list-sas --child-id 3 --raw 2> /dev/null::child-sas.*net-net.*cpu=1.*packets-in=0.*packets-out=0::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=0.*packets-out=0::YES +# this takes the per-CPU SA created above, the response most likely the one +# created as responder +moon::taskset -c 1 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::swanctl --list-sas --child-id 2 --raw 2> /dev/null::child-sas.*net-net.*packets-in=1.*packets-out=1::YES +moon::swanctl --list-sas --child-id 3 --raw 2> /dev/null::child-sas.*net-net.*cpu=1.*packets-in=0.*packets-out=1::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=1.*packets-out=0::YES +# trigger another SA for CPU 0, request is sent via fallback SA, received via sub SA +moon::taskset -c 0 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::cat /var/log/daemon.log::creating acquire job for policy PH_IP_MOON/32\[icmp/8] === PH_IP_SUN/32\[icmp/8].*cpu {0}::YES +moon::swanctl --list-sas --child-id 2 --raw 2> /dev/null::child-sas.*net-net.*packets-in=1.*packets-out=2::YES +moon::swanctl --list-sas --child-id 3 --raw 2> /dev/null::child-sas.*net-net.*cpu=1.*packets-in=0.*packets-out=1::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=2.*packets-out=0::YES +moon::swanctl --list-sas --child-id 5 --raw 2> /dev/null::child-sas.*net-net.*cpu=0.*packets-in=0.*packets-out=0::YES +# create a final SA for CPU 2, request is sent via fallback SA, response via one of the +# sub SAs (depends on the CPU assignment on the responder as it has to assign multiple +# SAs to the same CPU, so it could be either the one with unique ID 5, as it might +# be the newer one for that CPU, or it could be the original SA with unique ID 4) +moon::taskset -c 2 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::cat /var/log/daemon.log::creating acquire job for policy PH_IP_MOON/32\[icmp/8] === PH_IP_SUN/32\[icmp/8].*cpu {2}::YES +moon::swanctl --list-sas --child-id 2 --raw 2> /dev/null::child-sas.*net-net.*packets-in=1.*packets-out=3::YES +moon::swanctl --list-sas --child-id 3 --raw 2> /dev/null::child-sas.*net-net.*cpu=1.*packets-in=0.*packets-out=1::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=3.*packets-out=0::YES +moon::swanctl --list-sas --child-id 5 --raw 2> /dev/null::child-sas.*net-net.*cpu=0.*packets-in=0.*packets-out=0::YES +moon::swanctl --list-sas --child-id 6 --raw 2> /dev/null::child-sas.*net-net.*cpu=2.*packets-in=0.*packets-out=0::YES +# all these pings must be sent via their respective SAs, never the fallback SA +moon::taskset -c 0 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::taskset -c 1 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::taskset -c 2 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::taskset -c 3 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::swanctl --list-sas --child-id 2 --raw 2> /dev/null::child-sas.*net-net.*packets-in=1.*packets-out=3::YES +moon::swanctl --list-sas --child-id 3 --raw 2> /dev/null::child-sas.*net-net.*cpu=1.*packets-in=0.*packets-out=2::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=7.*packets-out=1::YES +moon::swanctl --list-sas --child-id 5 --raw 2> /dev/null::child-sas.*net-net.*cpu=0.*packets-in=0.*packets-out=1::YES +moon::swanctl --list-sas --child-id 6 --raw 2> /dev/null::child-sas.*net-net.*cpu=2.*packets-in=0.*packets-out=1::YES +# rekey an SA as initiator +moon::swanctl --rekey --child-id 5 +moon::sleep .5 +moon::taskset -c 0 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=8.*packets-out=1::YES +moon::swanctl --list-sas --child-id 7 --raw 2> /dev/null::child-sas.*net-net.*cpu=0.*packets-in=0.*packets-out=1::YES +# rekey an SA as responder +sun::swanctl --rekey --child-id 6 +moon::sleep .5 +moon::taskset -c 2 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*cpu=3.*packets-in=9.*packets-out=1::YES +moon::swanctl --list-sas --child-id 8 --raw 2> /dev/null::child-sas.*net-net.*cpu=2.*packets-in=0.*packets-out=1::YES +# rekey the fallback SA +moon::swanctl --rekey --child-id 2 +moon::sleep .5 +moon::swanctl --list-sas --child-id 9 --raw 2> /dev/null::child-sas.*net-net.*packets-in=0.*packets-out=0::YES +# all these pings must be sent via their respective SAs, never the fallback SA and not +# the old ones that remain to process delayed inbound packets +moon::taskset -c 0 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::taskset -c 1 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::taskset -c 2 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::taskset -c 3 ping -c 1 -I PH_IP_MOON PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_.eq=1::YES +moon::swanctl --list-sas --child-id 2 --raw 2> /dev/null::child-sas.*net-net.*state=DELETED.*packets-in=1.*packets-out=3::YES +moon::swanctl --list-sas --child-id 3 --raw 2> /dev/null::child-sas.*net-net.*state=INSTALLED.*cpu=1.*packets-in=0.*packets-out=3::YES +moon::swanctl --list-sas --child-id 4 --raw 2> /dev/null::child-sas.*net-net.*state=INSTALLED.*cpu=3.*packets-in=13.*packets-out=2::YES +moon::swanctl --list-sas --child-id 5 --raw 2> /dev/null::child-sas.*net-net.*state=DELETED.*cpu=0.*packets-in=0.*packets-out=1::YES +moon::swanctl --list-sas --child-id 6 --raw 2> /dev/null::child-sas.*net-net.*state=DELETED.*cpu=2.*packets-in=0.*packets-out=1::YES +moon::swanctl --list-sas --child-id 7 --raw 2> /dev/null::child-sas.*net-net.*state=INSTALLED.*cpu=0.*packets-in=0.*packets-out=2::YES +moon::swanctl --list-sas --child-id 8 --raw 2> /dev/null::child-sas.*net-net.*state=INSTALLED.*cpu=2.*packets-in=0.*packets-out=2::YES +moon::swanctl --list-sas --child-id 9 --raw 2> /dev/null::child-sas.*net-net.*state=INSTALLED.*packets-in=0.*packets-out=0::YES +sun::tcpdump::IP moon.strongswan.org.* > sun.strongswan.org.ipsec-nat-t: UDP-encap: ESP::YES +sun::tcpdump::IP sun.strongswan.org.* > moon.strongswan.org.ipsec-nat-t: UDP-encap: ESP::YES diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/strongswan.conf b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/strongswan.conf new file mode 100755 index 0000000000..8af0dabb29 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/strongswan.conf @@ -0,0 +1,15 @@ +# /etc/strongswan.conf - strongSwan configuration file + +swanctl { + load = pem pkcs1 revocation constraints pubkey openssl random +} + +charon-systemd { + load = random nonce openssl pem pkcs1 revocation curl kernel-netlink socket-default updown vici + + syslog { + daemon { + knl = 2 + } + } +} diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/swanctl/swanctl.conf b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/swanctl/swanctl.conf new file mode 100755 index 0000000000..c63b3eb88a --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/moon/etc/swanctl/swanctl.conf @@ -0,0 +1,32 @@ +connections { + + gw-gw { + local_addrs = 192.168.0.1 + remote_addrs = 192.168.0.2 + + local { + auth = pubkey + certs = moonCert.pem + id = moon.strongswan.org + } + remote { + auth = pubkey + id = sun.strongswan.org + } + children { + net-net { + mode = transport + per_cpu_sas = encap + + start_action = trap + updown = /usr/local/libexec/ipsec/_updown iptables + hostaccess = yes + esp_proposals = aes128gcm128-x25519 + } + } + version = 2 + mobike = no + encap = yes + proposals = aes128-sha256-x25519 + } +} diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/strongswan.conf b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/strongswan.conf new file mode 100755 index 0000000000..8af0dabb29 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/strongswan.conf @@ -0,0 +1,15 @@ +# /etc/strongswan.conf - strongSwan configuration file + +swanctl { + load = pem pkcs1 revocation constraints pubkey openssl random +} + +charon-systemd { + load = random nonce openssl pem pkcs1 revocation curl kernel-netlink socket-default updown vici + + syslog { + daemon { + knl = 2 + } + } +} diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/swanctl/swanctl.conf b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/swanctl/swanctl.conf new file mode 100755 index 0000000000..3bdee38f43 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/hosts/sun/etc/swanctl/swanctl.conf @@ -0,0 +1,32 @@ +connections { + + gw-gw { + local_addrs = 192.168.0.2 + remote_addrs = 192.168.0.1 + + local { + auth = pubkey + certs = sunCert.pem + id = sun.strongswan.org + } + remote { + auth = pubkey + id = moon.strongswan.org + } + children { + net-net { + mode = transport + per_cpu_sas = encap + + start_action = trap + updown = /usr/local/libexec/ipsec/_updown iptables + hostaccess = yes + esp_proposals = aes128gcm128-x25519 + } + } + version = 2 + mobike = no + encap = yes + proposals = aes128-sha256-x25519 + } +} diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/posttest.dat b/testing/tests/ikev2/per-cpu-sas-encap-transport/posttest.dat new file mode 100755 index 0000000000..cc6a5bff73 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/posttest.dat @@ -0,0 +1,5 @@ +moon::swanctl --terminate --ike gw-gw 2> /dev/null +moon::systemctl stop strongswan +sun::systemctl stop strongswan +moon::iptables-restore < /etc/iptables.flush +sun::iptables-restore < /etc/iptables.flush diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/pretest.dat b/testing/tests/ikev2/per-cpu-sas-encap-transport/pretest.dat new file mode 100755 index 0000000000..f3538357bc --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/pretest.dat @@ -0,0 +1,14 @@ +sun::iptables-restore < /etc/iptables.rules +moon::iptables-restore < /etc/iptables.rules +sun::systemctl start strongswan +moon::systemctl start strongswan +sun::expect-connection gw-gw +moon::expect-connection gw-gw +# allow UDP encap from any source to 4500 +moon::iptables -A INPUT -i eth0 -p udp --dport 4500 -j ACCEPT +moon::iptables -A OUTPUT -o eth0 -p udp --dport 4500 -j ACCEPT +sun:: iptables -A INPUT -i eth0 -p udp --dport 4500 -j ACCEPT +sun:: iptables -A OUTPUT -o eth0 -p udp --dport 4500 -j ACCEPT +# trigger the creation of the fallback SA, use -I so no UDP socket is used to +# determine the source address and trigger the acqurie (this packet is lost) +moon::ping -c 1 -W 1 -I PH_IP_MOON PH_IP_SUN diff --git a/testing/tests/ikev2/per-cpu-sas-encap-transport/test.conf b/testing/tests/ikev2/per-cpu-sas-encap-transport/test.conf new file mode 100755 index 0000000000..07a3b247a1 --- /dev/null +++ b/testing/tests/ikev2/per-cpu-sas-encap-transport/test.conf @@ -0,0 +1,25 @@ +#!/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="sun" + +# Guest instances on which IPsec is started +# Used for IPsec logging purposes +# +IPSECHOSTS="moon sun" + +# charon controlled by swanctl +# +SWANCTL=1 -- 2.47.2