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pf tests: test 'rdr' for SCTP

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Explicitly test that we cannot change the port number with rdr.
That's not a desireable feature on SCTP, because it could break
multihomed connections.

MFC after:	3 weeks
Sponsored by:	Orange Business Services
Differential Revision:	https://reviews.freebsd.org/D40868
This commit is contained in:
Kristof Provost 2023-06-01 18:03:07 +02:00
parent 1e02b7cb07
commit 4369a57514
1 changed files with 68 additions and 0 deletions
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68
tests/sys/netpfil/pf/sctp.sh
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@ -402,6 +402,73 @@ nat_v6_cleanup()
pft_cleanup
}
atf_test_case "rdr_v4" "cleanup"
rdr_v4_head()
{
atf_set descr 'Test rdr SCTP over IPv4'
atf_set require.user root
}
rdr_v4_body()
{
sctp_init
j="sctp:rdr_v4"
epair_c=$(vnet_mkepair)
epair_srv=$(vnet_mkepair)
vnet_mkjail ${j}srv ${epair_srv}a
vnet_mkjail ${j}gw ${epair_srv}b ${epair_c}a
vnet_mkjail ${j}c ${epair_c}b
jexec ${j}srv ifconfig ${epair_srv}a 198.51.100.1/24 up
# No default route in srv jail, to ensure we're NAT-ing
jexec ${j}gw ifconfig ${epair_srv}b 198.51.100.2/24 up
jexec ${j}gw ifconfig ${epair_c}a 192.0.2.1/24 up
jexec ${j}gw sysctl net.inet.ip.forwarding=1
jexec ${j}c ifconfig ${epair_c}b 192.0.2.2/24 up
jexec ${j}c route add default 192.0.2.1
jexec ${j}gw pfctl -e
pft_set_rules ${j}gw \
"rdr pass on ${epair_srv}b proto sctp from 198.51.100.0/24 to any port 1234 -> 192.0.2.2 port 1234" \
"pass"
echo "foo" | jexec ${j}c nc --sctp -N -l 1234 &
# Wait for the server to start
sleep 1
out=$(jexec ${j}srv nc --sctp -N -w 3 198.51.100.2 1234)
if [ "$out" != "foo" ]; then
atf_fail "SCTP connection failed"
fi
# Despite configuring port changes pf will not do so.
echo "bar" | jexec ${j}c nc --sctp -N -l 1234 &
pft_set_rules ${j}gw \
"rdr pass on ${epair_srv}b proto sctp from 198.51.100.0/24 to any port 1234 -> 192.0.2.2 port 4321" \
"pass"
# This will fail
out=$(jexec ${j}srv nc --sctp -N -w 3 198.51.100.2 4321)
if [ "$out" == "bar" ]; then
atf_fail "Port was unexpectedly changed."
fi
# This succeeds
out=$(jexec ${j}srv nc --sctp -N -w 3 198.51.100.2 1234)
if [ "$out" != "bar" ]; then
atf_fail "Port was unexpectedly changed."
fi
}
rdr_v4_cleanup()
{
pft_cleanup
}
atf_init_test_cases()
{
atf_add_test_case "basic_v4"
@ -410,4 +477,5 @@ atf_init_test_cases()
atf_add_test_case "abort_v6"
atf_add_test_case "nat_v4"
atf_add_test_case "nat_v6"
atf_add_test_case "rdr_v4"
}