twice_nat=sm.twice_nat,
out2in_only=sm.out2in_only,
tag=sm.tag,
+ external_sw_if_index=sm.external_sw_if_index,
is_add=0)
lb_static_mappings = self.vapi.nat44_lb_static_mapping_dump()
# configure interface address and check static mappings
self.pg7.config_ip4()
static_mappings = self.vapi.nat44_static_mapping_dump()
- self.assertEqual(1, len(static_mappings))
- self.assertEqual(static_mappings[0].external_ip_address[0:4],
- self.pg7.local_ip4n)
- self.assertEqual(0xFFFFFFFF, static_mappings[0].external_sw_if_index)
- self.assertEqual((static_mappings[0].tag).split('\0', 1)[0], tag)
+ self.assertEqual(2, len(static_mappings))
+ resolved = False
+ for sm in static_mappings:
+ if sm.external_sw_if_index == 0xFFFFFFFF:
+ self.assertEqual(sm.external_ip_address[0:4],
+ self.pg7.local_ip4n)
+ self.assertEqual((sm.tag).split('\0', 1)[0], tag)
+ resolved = True
+ self.assertTrue(resolved)
# remove interface address and check static mappings
self.pg7.unconfig_ip4()
static_mappings = self.vapi.nat44_static_mapping_dump()
+ self.assertEqual(1, len(static_mappings))
+ self.assertEqual(self.pg7.sw_if_index,
+ static_mappings[0].external_sw_if_index)
+ self.assertEqual((static_mappings[0].tag).split('\0', 1)[0], tag)
+
+ # configure interface address again and check static mappings
+ self.pg7.config_ip4()
+ static_mappings = self.vapi.nat44_static_mapping_dump()
+ self.assertEqual(2, len(static_mappings))
+ resolved = False
+ for sm in static_mappings:
+ if sm.external_sw_if_index == 0xFFFFFFFF:
+ self.assertEqual(sm.external_ip_address[0:4],
+ self.pg7.local_ip4n)
+ self.assertEqual((sm.tag).split('\0', 1)[0], tag)
+ resolved = True
+ self.assertTrue(resolved)
+
+ # remove static mapping
+ self.nat44_add_static_mapping(
+ '1.2.3.4',
+ external_sw_if_index=self.pg7.sw_if_index,
+ tag=tag,
+ is_add=0)
+ static_mappings = self.vapi.nat44_static_mapping_dump()
self.assertEqual(0, len(static_mappings))
def test_interface_addr_identity_nat(self):
# configure interface address and check identity mappings
self.pg7.config_ip4()
identity_mappings = self.vapi.nat44_identity_mapping_dump()
- self.assertEqual(1, len(identity_mappings))
- self.assertEqual(identity_mappings[0].ip_address,
- self.pg7.local_ip4n)
- self.assertEqual(0xFFFFFFFF, identity_mappings[0].sw_if_index)
- self.assertEqual(port, identity_mappings[0].port)
- self.assertEqual(IP_PROTOS.tcp, identity_mappings[0].protocol)
+ resolved = False
+ self.assertEqual(2, len(identity_mappings))
+ for sm in identity_mappings:
+ if sm.sw_if_index == 0xFFFFFFFF:
+ self.assertEqual(identity_mappings[0].ip_address,
+ self.pg7.local_ip4n)
+ self.assertEqual(port, identity_mappings[0].port)
+ self.assertEqual(IP_PROTOS.tcp, identity_mappings[0].protocol)
+ resolved = True
+ self.assertTrue(resolved)
# remove interface address and check identity mappings
self.pg7.unconfig_ip4()
identity_mappings = self.vapi.nat44_identity_mapping_dump()
- self.assertEqual(0, len(identity_mappings))
+ self.assertEqual(1, len(identity_mappings))
+ self.assertEqual(self.pg7.sw_if_index,
+ identity_mappings[0].sw_if_index)
def test_ipfix_nat44_sess(self):
""" IPFIX logging NAT44 session created/delted """
self.verify_capture_out(capture, nat_ip=self.pg0.remote_ip4,
same_port=True)
+ def test_output_feature_and_service3(self):
+ """ NAT44 interface output feature and DST NAT """
+ external_addr = '1.2.3.4'
+ external_port = 80
+ local_port = 8080
+
+ self.vapi.nat44_forwarding_enable_disable(1)
+ self.nat44_add_address(self.nat_addr)
+ self.nat44_add_static_mapping(self.pg1.remote_ip4, external_addr,
+ local_port, external_port,
+ proto=IP_PROTOS.tcp, out2in_only=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)
+
+ p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=external_addr) /
+ TCP(sport=12345, dport=external_port))
+ 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.src, self.pg0.remote_ip4)
+ self.assertEqual(tcp.sport, 12345)
+ self.assertEqual(ip.dst, self.pg1.remote_ip4)
+ self.assertEqual(tcp.dport, local_port)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
+ p = (Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) /
+ IP(src=self.pg1.remote_ip4, dst=self.pg0.remote_ip4) /
+ TCP(sport=local_port, dport=12345))
+ self.pg1.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(1)
+ p = capture[0]
+ try:
+ ip = p[IP]
+ tcp = p[TCP]
+ self.assertEqual(ip.src, external_addr)
+ self.assertEqual(tcp.sport, external_port)
+ self.assertEqual(ip.dst, self.pg0.remote_ip4)
+ self.assertEqual(tcp.dport, 12345)
+ self.check_tcp_checksum(p)
+ self.check_ip_checksum(p)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", p))
+ raise
+
def test_one_armed_nat44(self):
""" One armed NAT44 """
remote_host = self.pg9.remote_hosts[0]
self.assertEqual(len(sm), 1)
self.assertEqual(sm[0].total_pkts, 8)
+ def test_check_no_translate(self):
+ """ NAT66 translate only when egress interface is outside interface """
+ self.vapi.nat66_add_del_interface(self.pg0.sw_if_index)
+ self.vapi.nat66_add_del_interface(self.pg1.sw_if_index)
+ self.vapi.nat66_add_del_static_mapping(self.pg0.remote_ip6n,
+ self.nat_addr_n)
+
+ # in2out
+ p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6) /
+ UDP())
+ self.pg0.add_stream([p])
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(1)
+ packet = capture[0]
+ try:
+ self.assertEqual(packet[IPv6].src, self.pg0.remote_ip6)
+ self.assertEqual(packet[IPv6].dst, self.pg1.remote_ip6)
+ except:
+ self.logger.error(ppp("Unexpected or invalid packet:", packet))
+ raise
+
def clear_nat66(self):
"""
Clear NAT66 configuration.