git: b10cd461a58b - stable/12 - Add basic NAT test for pf, ipf and ipfw
Kristof Provost
kp at FreeBSD.org
Tue Sep 14 20:01:38 UTC 2021
The branch stable/12 has been updated by kp:
URL: https://cgit.FreeBSD.org/src/commit/?id=b10cd461a58bb3b8b80ae1405d9c88d2af74d547
commit b10cd461a58bb3b8b80ae1405d9c88d2af74d547
Author: Tom Jones <thj at FreeBSD.org>
AuthorDate: 2019-08-17 06:44:11 +0000
Commit: Kristof Provost <kp at FreeBSD.org>
CommitDate: 2021-09-14 08:27:23 +0000
Add basic NAT test for pf, ipf and ipfw
Add common firewall NAT tests for pf, ipf and ipfw (using both in-kernel and
userspace NAT).
Submitted by: Ahsan Barkati
Sponsored by: Google, Inc. (GSoC 2019)
Reviewed by: kp
Approved by: bz (mentor)
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D21199
(cherry picked from commit 0d9da68f01510ae4c5bb33b744f1e0b3711c7fb9)
---
tests/sys/netpfil/common/Makefile | 4 +-
tests/sys/netpfil/common/nat.sh | 156 ++++++++++++++++++++++++++++++++++++
tests/sys/netpfil/common/utils.subr | 18 ++++-
3 files changed, 173 insertions(+), 5 deletions(-)
diff --git a/tests/sys/netpfil/common/Makefile b/tests/sys/netpfil/common/Makefile
index a4c135dbce08..9e1efc924c6e 100644
--- a/tests/sys/netpfil/common/Makefile
+++ b/tests/sys/netpfil/common/Makefile
@@ -4,7 +4,9 @@ PACKAGE= tests
TESTSDIR= ${TESTSBASE}/sys/netpfil/common
-ATF_TESTS_SH+= pass_block
+ATF_TESTS_SH+= \
+ nat \
+ pass_block
${PACKAGE}FILES+= \
pft_ping.py \
diff --git a/tests/sys/netpfil/common/nat.sh b/tests/sys/netpfil/common/nat.sh
new file mode 100644
index 000000000000..f74467dce062
--- /dev/null
+++ b/tests/sys/netpfil/common/nat.sh
@@ -0,0 +1,156 @@
+#-
+# SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+#
+# Copyright (c) 2019 Ahsan Barkati
+#
+# 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.
+#
+# $FreeBSD$
+#
+
+. $(atf_get_srcdir)/utils.subr
+. $(atf_get_srcdir)/runner.subr
+
+basic_head()
+{
+ atf_set descr 'Basic IPv4 NAT test'
+ atf_set require.user root
+}
+
+basic_body()
+{
+ firewall=$1
+ firewall_init $firewall
+ nat_init $firewall
+
+ epair_host_nat=$(vnet_mkepair)
+ epair_client1_nat=$(vnet_mkepair)
+ epair_client2_nat=$(vnet_mkepair)
+
+ vnet_mkjail nat ${epair_host_nat}b ${epair_client1_nat}a ${epair_client2_nat}a
+ vnet_mkjail client1 ${epair_client1_nat}b
+ vnet_mkjail client2 ${epair_client2_nat}b
+
+ ifconfig ${epair_host_nat}a 198.51.100.2/24 up
+ jexec nat ifconfig ${epair_host_nat}b 198.51.100.1/24 up
+
+ jexec nat ifconfig ${epair_client1_nat}a 192.0.2.1/24 up
+ jexec client1 ifconfig ${epair_client1_nat}b 192.0.2.2/24 up
+
+ jexec nat ifconfig ${epair_client2_nat}a 192.0.3.1/24 up
+ jexec client2 ifconfig ${epair_client2_nat}b 192.0.3.2/24 up
+
+ jexec nat sysctl net.inet.ip.forwarding=1
+
+ jexec client1 route add -net 198.51.100.0/24 192.0.2.1
+ jexec client2 route add -net 198.51.100.0/24 192.0.3.1
+
+ # ping fails without NAT configuration
+ atf_check -s exit:2 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2
+ atf_check -s exit:2 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2
+
+ firewall_config nat ${firewall} \
+ "pf" \
+ "nat pass on ${epair_host_nat}b inet from any to any -> (${epair_host_nat}b)" \
+ "ipfw" \
+ "ipfw -q nat 123 config if ${epair_host_nat}b" \
+ "ipfw -q add 1000 nat 123 all from any to any" \
+ "ipfnat" \
+ "map ${epair_host_nat}b 192.0.3.0/24 -> 0/32" \
+ "map ${epair_host_nat}b 192.0.2.0/24 -> 0/32" \
+
+
+ # ping is successful now
+ atf_check -s exit:0 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2
+ atf_check -s exit:0 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2
+
+}
+
+basic_cleanup()
+{
+ firewall=$1
+ firewall_cleanup $firewall
+}
+
+userspace_nat_head()
+{
+ atf_set descr 'Nat test for ipfw using userspace natd'
+ atf_set require.user root
+}
+userspace_nat_body()
+{
+ firewall=$1
+ firewall_init $firewall
+
+ if ! kldstat -q -m ipdivert; then
+ atf_skip "This test requires ipdivert module loaded"
+ fi
+
+ epair_host_nat=$(vnet_mkepair)
+ epair_client1_nat=$(vnet_mkepair)
+ epair_client2_nat=$(vnet_mkepair)
+
+ vnet_mkjail nat ${epair_host_nat}b ${epair_client1_nat}a ${epair_client2_nat}a
+ vnet_mkjail client1 ${epair_client1_nat}b
+ vnet_mkjail client2 ${epair_client2_nat}b
+
+ ifconfig ${epair_host_nat}a 198.51.100.2/24 up
+ jexec nat ifconfig ${epair_host_nat}b 198.51.100.1/24 up
+
+ jexec nat ifconfig ${epair_client1_nat}a 192.0.2.1/24 up
+ jexec client1 ifconfig ${epair_client1_nat}b 192.0.2.2/24 up
+
+ jexec nat ifconfig ${epair_client2_nat}a 192.0.3.1/24 up
+ jexec client2 ifconfig ${epair_client2_nat}b 192.0.3.2/24 up
+
+ jexec nat sysctl net.inet.ip.forwarding=1
+
+ jexec client1 route add -net 198.51.100.0/24 192.0.2.1
+ jexec client2 route add -net 198.51.100.0/24 192.0.3.1
+ # Test the userspace NAT of ipfw
+ # ping fails without NAT configuration
+ atf_check -s exit:2 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2
+ atf_check -s exit:2 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2
+
+ firewall_config nat ${firewall} \
+ "ipfw" \
+ "natd -interface ${epair_host_nat}b" \
+ "ipfw -q add divert natd all from any to any via ${epair_host_nat}b" \
+
+ # ping is successful now
+ atf_check -s exit:0 -o ignore jexec client1 ping -t 1 -c 1 198.51.100.2
+ atf_check -s exit:0 -o ignore jexec client2 ping -t 1 -c 1 198.51.100.2
+}
+
+userspace_nat_cleanup()
+{
+ firewall=$1
+ firewall_cleanup $firewall
+}
+
+setup_tests \
+ basic \
+ pf \
+ ipfw \
+ ipfnat \
+ userspace_nat \
+ ipfw
\ No newline at end of file
diff --git a/tests/sys/netpfil/common/utils.subr b/tests/sys/netpfil/common/utils.subr
index d871962f5341..3f9d6b40183a 100644
--- a/tests/sys/netpfil/common/utils.subr
+++ b/tests/sys/netpfil/common/utils.subr
@@ -37,7 +37,7 @@ firewall_config()
shift
while [ $# -gt 0 ]; do
- if [ $(is_firewall $fw) -eq 1 ]; then
+ if [ $(is_firewall "$1") -eq 1 ]; then
current_fw="$1"
shift
filename=${current_fw}.rule
@@ -94,8 +94,8 @@ firewall_init()
atf_skip "This test requires ipf"
fi
elif [ ${firewall} == "ipfnat" ]; then
- if ! kldstat -q -m ipfw_nat; then
- atf_skip "This test requires ipfw_nat"
+ if ! kldstat -q -m ipfilter; then
+ atf_skip "This test requires ipf"
fi
else
atf_fail "$fw is not a valid firewall to initialize"
@@ -103,6 +103,16 @@ firewall_init()
}
+nat_init()
+{
+ firewall=$1
+ if [ ${firewall} == "ipfw" ]; then
+ if ! kldstat -q -m ipfw_nat; then
+ atf_skip "This test requires ipfw_nat"
+ fi
+ fi
+}
+
is_firewall()
{
if [ "$1" = "pf" -o "$1" = "ipfw" -o "$1" = "ipf" -o "$1" = "ipfnat" ]; then
@@ -110,4 +120,4 @@ is_firewall()
else
echo 0
fi
-}
\ No newline at end of file
+}
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