self.port_in = random.randint(1025, 65535)
# in2out
- pkts = self.create_stream_frag(self.pg0,
- self.pg1.remote_ip4,
- self.port_in,
- 20,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+ self.port_in, 20, data, proto)
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
else:
sport = p[layer].id
dport = 0
- pkts = self.create_stream_frag(self.pg1,
- dst_addr,
- sport,
- dport,
- data,
- proto,
- echo_reply=True)
+ pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport, data,
+ proto, echo_reply=True)
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in range(2):
# out2in
- pkts = self.create_stream_frag(self.pg0,
- self.server_out_addr,
- self.port_in,
- self.server_out_port,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.server_out_addr,
+ self.port_in, self.server_out_port,
+ data, proto)
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
# in2out
if proto != IP_PROTOS.icmp:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
self.server_in_port,
- p[layer].sport,
- data,
- proto)
+ p[layer].sport, data, proto)
else:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
- p[layer].id,
- 0,
- data,
- proto,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+ p[layer].id, 0, data, proto,
echo_reply=True)
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
for i in range(2):
# in2out
- pkts = self.create_stream_frag(self.pg0,
- self.pg1.remote_ip4,
- self.port_in,
- 20,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.pg1.remote_ip4,
+ self.port_in, 20, data, proto)
pkts.reverse()
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
else:
sport = p[layer].id
dport = 0
- pkts = self.create_stream_frag(self.pg1,
- dst_addr,
- sport,
- dport,
- data,
- proto,
- echo_reply=True)
+ pkts = self.create_stream_frag(self.pg1, dst_addr, sport, dport,
+ data, proto, echo_reply=True)
pkts.reverse()
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
for i in range(2):
# out2in
- pkts = self.create_stream_frag(self.pg0,
- self.server_out_addr,
- self.port_in,
- self.server_out_port,
- data,
- proto)
+ pkts = self.create_stream_frag(self.pg0, self.server_out_addr,
+ self.port_in, self.server_out_port,
+ data, proto)
pkts.reverse()
self.pg0.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
# in2out
if proto != IP_PROTOS.icmp:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
self.server_in_port,
- p[layer].sport,
- data,
- proto)
+ p[layer].sport, data, proto)
else:
- pkts = self.create_stream_frag(self.pg1,
- self.pg0.remote_ip4,
- p[layer].id,
- 0,
- data,
- proto,
+ pkts = self.create_stream_frag(self.pg1, self.pg0.remote_ip4,
+ p[layer].id, 0, data, proto,
echo_reply=True)
pkts.reverse()
self.pg1.add_stream(pkts)
cls.pg8.config_ip4()
cls.pg8.resolve_arp()
+ def setUp(self):
+ super(TestNAT44EndpointDependent, self).setUp()
+ self.vapi.nat_set_timeouts(
+ udp=300, tcp_established=7440, tcp_transitory=240, icmp=60)
+
@classmethod
def tearDownClass(cls):
super(TestNAT44EndpointDependent, cls).tearDownClass()
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
start_sessnum = len(sessions)
+ self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=2, icmp=5)
+
self.initiate_tcp_session(self.pg0, self.pg1)
# FIN packet in -> out
self.pg_start()
self.pg1.get_capture(1)
- sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4,
- 0)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ out2in_drops = stats[0]
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ in2out_drops = stats[0]
+
+ # extra FIN packet out -> in - this should be dropped
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="FA", seq=300, ack=101))
+
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.assert_nothing_captured()
+
+ # extra ACK packet in -> out - this should be dropped
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - out2in_drops, 1)
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - in2out_drops, 1)
+
+ self.sleep(3)
+ # extra ACK packet in -> out - this will cause session to be wiped
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
self.assertEqual(len(sessions) - start_sessnum, 0)
def test_tcp_session_close_out(self):
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
start_sessnum = len(sessions)
+ self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=2, icmp=5)
+
self.initiate_tcp_session(self.pg0, self.pg1)
# FIN packet out -> in
self.pg_start()
self.pg0.get_capture(1)
- sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4,
- 0)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ out2in_drops = stats[0]
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ in2out_drops = stats[0]
+
+ # extra FIN packet out -> in - this should be dropped
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="FA", seq=300, ack=101))
+
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.assert_nothing_captured()
+
+ # extra ACK packet in -> out - this should be dropped
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - out2in_drops, 1)
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - in2out_drops, 1)
+
+ self.sleep(3)
+ # extra ACK packet in -> out - this will cause session to be wiped
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
self.assertEqual(len(sessions) - start_sessnum, 0)
def test_tcp_session_close_simultaneous(self):
sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
start_sessnum = len(sessions)
+ self.vapi.nat_set_timeouts(udp=300, tcp_established=7440,
+ tcp_transitory=2, icmp=5)
+
self.initiate_tcp_session(self.pg0, self.pg1)
# FIN packet in -> out
self.pg_start()
self.pg0.get_capture(1)
- sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4,
- 0)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
+ self.assertEqual(len(sessions) - start_sessnum, 1)
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ out2in_drops = stats[0]
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ in2out_drops = stats[0]
+
+ # extra FIN packet out -> in - this should be dropped
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.nat_addr) /
+ TCP(sport=self.tcp_external_port, dport=self.tcp_port_out,
+ flags="FA", seq=300, ack=101))
+
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.assert_nothing_captured()
+
+ # extra ACK packet in -> out - this should be dropped
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-out2in/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - out2in_drops, 1)
+ stats = self.statistics.get_counter(
+ '/err/nat44-ed-in2out/drops due to TCP in transitory timeout')
+ self.assertEqual(stats[0] - in2out_drops, 1)
+
+ self.sleep(3)
+ # extra ACK packet in -> out - this will cause session to be wiped
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ TCP(sport=self.tcp_port_in, dport=self.tcp_external_port,
+ flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.assert_nothing_captured()
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4, 0)
self.assertEqual(len(sessions) - start_sessnum, 0)
def test_one_armed_nat44_static(self):