# $FreeBSD$ # # SPDX-License-Identifier: BSD-2-Clause-FreeBSD # # Copyright (c) 2018 Kristof Provost # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. . $(atf_get_srcdir)/utils.subr atf_test_case "synproxy" "cleanup" synproxy_head() { atf_set descr 'Basic synproxy test' atf_set require.user root } synproxy_body() { pft_init epair=$(vnet_mkepair) ifconfig ${epair}a 192.0.2.1/24 up route add -net 198.51.100.0/24 192.0.2.2 link=$(vnet_mkepair) vnet_mkjail alcatraz ${epair}b ${link}a jexec alcatraz ifconfig ${epair}b 192.0.2.2/24 up jexec alcatraz ifconfig ${link}a 198.51.100.1/24 up jexec alcatraz sysctl net.inet.ip.forwarding=1 vnet_mkjail singsing ${link}b jexec singsing ifconfig ${link}b 198.51.100.2/24 up jexec singsing route add default 198.51.100.1 jexec singsing /usr/sbin/inetd -p inetd-singsing.pid $(atf_get_srcdir)/echo_inetd.conf jexec alcatraz pfctl -e pft_set_rules alcatraz "set fail-policy return" \ "scrub in all fragment reassemble" \ "pass out quick on ${epair}b all no state allow-opts" \ "pass in quick on ${epair}b proto tcp from any to any port 7 synproxy state" \ "pass in quick on ${epair}b all no state" # Sanity check, can we ping singing atf_check -s exit:0 -o ignore ping -c 1 198.51.100.2 # Check that we can talk to the singsing jail, after synproxying reply=$(echo ping | nc -N 198.51.100.2 7) if [ "${reply}" != "ping" ]; then atf_fail "echo failed" fi } synproxy_cleanup() { rm -f inetd-singsing.pid pft_cleanup } atf_test_case "local" "cleanup" local_head() { atf_set descr 'Synproxy a locally terminated connection' atf_set require.user root } local_body() { pft_init epair=$(vnet_mkepair) ifconfig ${epair}a 192.0.2.2/24 up vnet_mkjail alcatraz ${epair}b jexec alcatraz ifconfig ${epair}b 192.0.2.1/24 up jexec alcatraz /usr/sbin/inetd -p inetd-alcatraz.pid \ $(atf_get_srcdir)/echo_inetd.conf jexec alcatraz pfctl -e pft_set_rules alcatraz "set fail-policy return" \ "scrub in all fragment reassemble" \ "pass in quick on ${epair}b proto tcp from any to any port 7 synproxy state" # Sanity check atf_check -s exit:0 -o ignore ping -c 1 192.0.2.1 # Check that we can talk to the jail, after synproxying reply=$(echo ping | nc -N -w 5 192.0.2.1 7) if [ "${reply}" != "ping" ]; then atf_fail "echo failed" fi } local_cleanup() { rm -f inetd-alcatraz.pid pft_cleanup } atf_test_case "local_v6" "cleanup" local_v6_head() { atf_set descr 'Synproxy (v6) a locally terminated connection' atf_set require.user root } local_v6_body() { pft_init epair=$(vnet_mkepair) ifconfig ${epair}a inet6 2001:db8:42::1/64 up vnet_mkjail alcatraz ${epair}b jexec alcatraz ifconfig ${epair}b inet6 2001:db8:42::2/64 up jexec alcatraz /usr/sbin/inetd -p inetd-alcatraz.pid \ $(atf_get_srcdir)/echo_inetd.conf jexec alcatraz pfctl -e pft_set_rules alcatraz "set fail-policy return" \ "scrub in all fragment reassemble" \ "pass in quick on ${epair}b proto tcp from any to any port 7 synproxy state" # Sanity check atf_check -s exit:0 -o ignore ping6 -c 1 2001:db8:42::2 reply=$(echo ping | nc -N -w 5 2001:db8:42::2 7) if [ "${reply}" != "ping" ]; then atf_fail "echo failed" fi } local_v6_cleanup() { rm -f inetd-alcatraz.pid pft_cleanup } atf_init_test_cases() { atf_add_test_case "synproxy" atf_add_test_case "local" atf_add_test_case "local_v6" }