self.logger.error(ppp("Unexpected or invalid packet:", p))
raise
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4n, 0)
+ self.assertEqual(len(sessions), 0)
+ self.vapi.nat44_add_del_identity_mapping(ip=self.pg0.remote_ip4n,
+ vrf_id=1)
+ identity_mappings = self.vapi.nat44_identity_mapping_dump()
+ self.assertEqual(len(identity_mappings), 2)
+
def test_multiple_inside_interfaces(self):
""" NAT44 multiple non-overlapping address space inside interfaces """
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
- data = "A" * 4 + "B" * 16 + "C" * 3
- self.tcp_port_in = random.randint(1025, 65535)
-
- reass = self.vapi.nat_reass_dump()
- reass_n_start = len(reass)
+ self.frag_in_order(proto=IP_PROTOS.tcp)
+ self.frag_in_order(proto=IP_PROTOS.udp)
+ self.frag_in_order(proto=IP_PROTOS.icmp)
- # in2out
- pkts = self.create_stream_frag(self.pg0,
- self.pg1.remote_ip4,
- self.tcp_port_in,
- 20,
- data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
+ def test_frag_forwarding(self):
+ """ NAT44 forwarding fragment test """
+ self.vapi.nat44_add_interface_addr(self.pg1.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_forwarding_enable_disable(1)
- # out2in
+ data = "A" * 16 + "B" * 16 + "C" * 3
pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
+ self.pg0.remote_ip4,
+ 4789,
+ 4789,
+ data,
+ proto=IP_PROTOS.udp)
self.pg1.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
p = self.reass_frags_and_verify(frags,
self.pg1.remote_ip4,
self.pg0.remote_ip4)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
+ self.assertEqual(p[UDP].sport, 4789)
+ self.assertEqual(p[UDP].dport, 4789)
self.assertEqual(data, p[Raw].load)
- reass = self.vapi.nat_reass_dump()
- reass_n_end = len(reass)
-
- self.assertEqual(reass_n_end - reass_n_start, 2)
-
def test_reass_hairpinning(self):
""" NAT44 fragments hairpinning """
- server = self.pg0.remote_hosts[1]
- host_in_port = random.randint(1025, 65535)
- server_in_port = random.randint(1025, 65535)
- server_out_port = random.randint(1025, 65535)
- data = "A" * 4 + "B" * 16 + "C" * 3
+ self.server = self.pg0.remote_hosts[1]
+ self.host_in_port = random.randint(1025, 65535)
+ self.server_in_port = random.randint(1025, 65535)
+ self.server_out_port = random.randint(1025, 65535)
self.nat44_add_address(self.nat_addr)
self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
# add static mapping for server
- self.nat44_add_static_mapping(server.ip4, self.nat_addr,
- server_in_port, server_out_port,
+ self.nat44_add_static_mapping(self.server.ip4, self.nat_addr,
+ self.server_in_port,
+ self.server_out_port,
proto=IP_PROTOS.tcp)
+ self.nat44_add_static_mapping(self.server.ip4, self.nat_addr,
+ self.server_in_port,
+ self.server_out_port,
+ proto=IP_PROTOS.udp)
+ self.nat44_add_static_mapping(self.server.ip4, self.nat_addr)
- # send packet from host to server
- pkts = self.create_stream_frag(self.pg0,
- self.nat_addr,
- host_in_port,
- server_out_port,
- data)
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- server.ip4)
- self.assertNotEqual(p[TCP].sport, host_in_port)
- self.assertEqual(p[TCP].dport, server_in_port)
- self.assertEqual(data, p[Raw].load)
+ self.reass_hairpinning(proto=IP_PROTOS.tcp)
+ self.reass_hairpinning(proto=IP_PROTOS.udp)
+ self.reass_hairpinning(proto=IP_PROTOS.icmp)
def test_frag_out_of_order(self):
""" NAT44 translate fragments arriving out of order """
self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
is_inside=0)
- data = "A" * 4 + "B" * 16 + "C" * 3
- random.randint(1025, 65535)
-
- # in2out
- pkts = self.create_stream_frag(self.pg0,
- self.pg1.remote_ip4,
- self.tcp_port_in,
- 20,
- data)
- pkts.reverse()
- self.pg0.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg1.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.nat_addr,
- self.pg1.remote_ip4)
- self.assertEqual(p[TCP].dport, 20)
- self.assertNotEqual(p[TCP].sport, self.tcp_port_in)
- self.tcp_port_out = p[TCP].sport
- self.assertEqual(data, p[Raw].load)
-
- # out2in
- pkts = self.create_stream_frag(self.pg1,
- self.nat_addr,
- 20,
- self.tcp_port_out,
- data)
- pkts.reverse()
- self.pg1.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- frags = self.pg0.get_capture(len(pkts))
- p = self.reass_frags_and_verify(frags,
- self.pg1.remote_ip4,
- self.pg0.remote_ip4)
- self.assertEqual(p[TCP].sport, 20)
- self.assertEqual(p[TCP].dport, self.tcp_port_in)
- self.assertEqual(data, p[Raw].load)
+ self.frag_out_of_order(proto=IP_PROTOS.tcp)
+ self.frag_out_of_order(proto=IP_PROTOS.udp)
+ self.frag_out_of_order(proto=IP_PROTOS.icmp)
def test_port_restricted(self):
""" Port restricted NAT44 (MAP-E CE) """
self.server_in_port,
self.server_out_port,
proto=IP_PROTOS.udp)
- self.nat44_add_static_mapping(self.server.ip4, self.nat_addr,
- proto=IP_PROTOS.icmp)
+ self.nat44_add_static_mapping(self.server.ip4, self.nat_addr)
self.reass_hairpinning(proto=IP_PROTOS.tcp)
self.reass_hairpinning(proto=IP_PROTOS.udp)
adresses = self.vapi.nat44_address_dump()
self.assertEqual(0, len(adresses))
+ def test_tcp_close(self):
+ """ Close TCP session from inside network - output feature """
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.pg1.local_ip4)
+ twice_nat_addr = '10.0.1.3'
+ service_ip = '192.168.16.150'
+ self.nat44_add_address(twice_nat_addr, twice_nat=1)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index,
+ is_inside=0)
+ self.vapi.nat44_interface_add_del_output_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.nat44_add_static_mapping(self.pg0.remote_ip4,
+ service_ip,
+ 80,
+ 80,
+ proto=IP_PROTOS.tcp,
+ out2in_only=1,
+ twice_nat=1)
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4n, 0)
+ start_sessnum = len(sessions)
+
+ # SYN packet out->in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=service_ip) /
+ TCP(sport=33898, dport=80, flags="S"))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ tcp_port = p[TCP].sport
+
+ # SYN + ACK packet in->out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+ TCP(sport=80, dport=tcp_port, flags="SA"))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ # ACK packet out->in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=service_ip) /
+ TCP(sport=33898, dport=80, flags="A"))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.get_capture(1)
+
+ # FIN packet in -> out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+ TCP(sport=80, dport=tcp_port, flags="FA", seq=100, ack=300))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ # FIN+ACK packet out -> in
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=service_ip) /
+ TCP(sport=33898, dport=80, flags="FA", seq=300, ack=101))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg0.get_capture(1)
+
+ # ACK packet in -> out
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=twice_nat_addr) /
+ TCP(sport=80, dport=tcp_port, flags="A", seq=101, ack=301))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ sessions = self.vapi.nat44_user_session_dump(self.pg0.remote_ip4n,
+ 0)
+ self.assertEqual(len(sessions) - start_sessnum, 0)
+
def test_tcp_session_close_in(self):
""" Close TCP session from inside network """
self.tcp_port_out = 10505
nsessions = nsessions + user.nsessions
self.assertLess(nsessions, 2 * max_sessions)
+ @unittest.skipUnless(running_extended_tests(), "part of extended tests")
+ def test_session_rst_timeout(self):
+ """ NAT44 session RST timeouts """
+ self.nat44_add_address(self.nat_addr)
+ self.vapi.nat44_interface_add_del_feature(self.pg0.sw_if_index)
+ self.vapi.nat44_interface_add_del_feature(self.pg1.sw_if_index,
+ is_inside=0)
+ self.vapi.nat_set_timeouts(tcp_transitory=5)
+
+ nat44_config = self.vapi.nat_show_config()
+
+ self.initiate_tcp_session(self.pg0, self.pg1)
+ 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="R"))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ pkts_num = nat44_config.max_translations_per_user - 1
+ pkts = []
+ for i in range(0, pkts_num):
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ UDP(sport=1025 + i, dport=53))
+ pkts.append(p)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(pkts_num)
+
+ sleep(6)
+
+ 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 + 1, dport=self.tcp_external_port + 1,
+ flags="S"))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.pg1.get_capture(1)
+
+ nsessions = 0
+ users = self.vapi.nat44_user_dump()
+ self.assertEqual(len(users), 1)
+ self.assertEqual(users[0].ip_address, self.pg0.remote_ip4n)
+ self.assertEqual(users[0].nsessions,
+ nat44_config.max_translations_per_user)
+
@unittest.skipUnless(running_extended_tests(), "part of extended tests")
def test_session_limit_per_user(self):
""" Maximum sessions per user limit """
'\x00\x00\x00\x00', 0, is_translation=1,
is_rfc6052=1)
+ @unittest.skip('Temporary disabled')
def test_464xlat_ce(self):
""" Test 464XLAT CE with NAT44 """
self.vapi.nat44_add_del_address_range(self.nat_addr_n,
self.nat_addr_n, is_add=0)
+ @unittest.skip('Temporary disabled')
def test_464xlat_ce_no_nat(self):
""" Test 464XLAT CE without NAT44 """
Code Review / vpp.git / blobdiff