cls.pg4._remote_ip4 = cls.pg9._remote_hosts[0]._ip4 = "10.0.0.2"
cls.pg9.resolve_arp()
- random.seed()
-
except Exception:
super(TestNAT44, cls).tearDownClass()
raise
self.assertEqual(p[TCP].dport, self.tcp_port_in)
self.assertEqual(data, p[Raw].load)
+ def test_port_restricted(self):
+ """ Port restricted NAT44 (MAP-E CE) """
+ 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.cli("nat44 addr-port-assignment-alg map-e psid 10 "
+ "psid-offset 6 psid-len 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=4567, dport=22))
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(ip.src, self.nat_addr)
+ self.assertEqual(tcp.dport, 22)
+ self.assertNotEqual(tcp.sport, 4567)
+ self.assertEqual((tcp.sport >> 6) & 63, 10)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
def tearDown(self):
super(TestNAT44, self).tearDown()
if not self.vpp_dead:
self.logger.info(self.vapi.cli("show nat44 verbose"))
self.logger.info(self.vapi.cli("show nat virtual-reassembly"))
+ self.vapi.cli("nat44 addr-port-assignment-alg default")
self.clear_nat44()
cls.vrf1_nat_addr_n = socket.inet_pton(socket.AF_INET,
cls.vrf1_nat_addr)
- cls.create_pg_interfaces(range(4))
+ cls.create_pg_interfaces(range(5))
cls.ip6_interfaces = list(cls.pg_interfaces[0:1])
cls.ip6_interfaces.append(cls.pg_interfaces[2])
cls.ip4_interfaces = list(cls.pg_interfaces[1:2])
self.assertEqual(p[TCP].dport, self.tcp_port_in)
self.assertEqual(data, p[Raw].load)
+ def test_interface_addr(self):
+ """ Acquire NAT64 pool addresses from interface """
+ self.vapi.nat64_add_interface_addr(self.pg4.sw_if_index)
+
+ # no address in NAT64 pool
+ adresses = self.vapi.nat44_address_dump()
+ self.assertEqual(0, len(adresses))
+
+ # configure interface address and check NAT64 address pool
+ self.pg4.config_ip4()
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(len(addresses), 1)
+ self.assertEqual(addresses[0].address, self.pg4.local_ip4n)
+
+ # remove interface address and check NAT64 address pool
+ self.pg4.unconfig_ip4()
+ addresses = self.vapi.nat64_pool_addr_dump()
+ self.assertEqual(0, len(adresses))
+
def nat64_get_ses_num(self):
"""
Return number of active NAT64 sessions.