diff options
Diffstat (limited to 'test/test_ipsec_nat.py')
| -rw-r--r--[-rwxr-xr-x] | test/test_ipsec_nat.py | 334 |
1 files changed, 204 insertions, 130 deletions
diff --git a/test/test_ipsec_nat.py b/test/test_ipsec_nat.py index b7ccb2befdc..881b5a7596c 100755..100644 --- a/test/test_ipsec_nat.py +++ b/test/test_ipsec_nat.py @@ -9,15 +9,14 @@ from scapy.layers.ipsec import SecurityAssociation, ESP from util import ppp, ppc from template_ipsec import TemplateIpsec -from vpp_ipsec import VppIpsecSA, VppIpsecSpd, VppIpsecSpdEntry,\ - VppIpsecSpdItfBinding +from vpp_ipsec import VppIpsecSA, VppIpsecSpd, VppIpsecSpdEntry, VppIpsecSpdItfBinding from vpp_ip_route import VppIpRoute, VppRoutePath from vpp_ip import DpoProto from vpp_papi import VppEnum class IPSecNATTestCase(TemplateIpsec): - """ IPSec/NAT + """IPSec/NAT TUNNEL MODE:: @@ -53,18 +52,19 @@ class IPSecNATTestCase(TemplateIpsec): self.tun_spd = VppIpsecSpd(self, self.tun_spd_id) self.tun_spd.add_vpp_config() - VppIpsecSpdItfBinding(self, self.tun_spd, - self.tun_if).add_vpp_config() + VppIpsecSpdItfBinding(self, self.tun_spd, self.tun_if).add_vpp_config() p = self.ipv4_params self.config_esp_tun(p) self.logger.info(self.vapi.ppcli("show ipsec all")) d = DpoProto.DPO_PROTO_IP6 if p.is_ipv6 else DpoProto.DPO_PROTO_IP4 - VppIpRoute(self, p.remote_tun_if_host, p.addr_len, - [VppRoutePath(self.tun_if.remote_addr[p.addr_type], - 0xffffffff, - proto=d)]).add_vpp_config() + VppIpRoute( + self, + p.remote_tun_if_host, + p.addr_len, + [VppRoutePath(self.tun_if.remote_addr[p.addr_type], 0xFFFFFFFF, proto=d)], + ).add_vpp_config() def tearDown(self): super(IPSecNATTestCase, self).tearDown() @@ -72,65 +72,84 @@ class IPSecNATTestCase(TemplateIpsec): def create_stream_plain(self, src_mac, dst_mac, src_ip, dst_ip): return [ # TCP - Ether(src=src_mac, dst=dst_mac) / - IP(src=src_ip, dst=dst_ip) / - TCP(sport=self.tcp_port_in, dport=20), + Ether(src=src_mac, dst=dst_mac) + / IP(src=src_ip, dst=dst_ip) + / TCP(sport=self.tcp_port_in, dport=20), # UDP - Ether(src=src_mac, dst=dst_mac) / - IP(src=src_ip, dst=dst_ip) / - UDP(sport=self.udp_port_in, dport=20), + Ether(src=src_mac, dst=dst_mac) + / IP(src=src_ip, dst=dst_ip) + / UDP(sport=self.udp_port_in, dport=20), # ICMP - Ether(src=src_mac, dst=dst_mac) / - IP(src=src_ip, dst=dst_ip) / - ICMP(id=self.icmp_id_in, type='echo-request') + Ether(src=src_mac, dst=dst_mac) + / IP(src=src_ip, dst=dst_ip) + / ICMP(id=self.icmp_id_in, type="echo-request"), ] def create_stream_encrypted(self, src_mac, dst_mac, src_ip, dst_ip, sa): return [ # TCP - Ether(src=src_mac, dst=dst_mac) / - sa.encrypt(IP(src=src_ip, dst=dst_ip) / - TCP(dport=self.tcp_port_out, sport=20)), + Ether(src=src_mac, dst=dst_mac) + / sa.encrypt( + IP(src=src_ip, dst=dst_ip) / TCP(dport=self.tcp_port_out, sport=20) + ), # UDP - Ether(src=src_mac, dst=dst_mac) / - sa.encrypt(IP(src=src_ip, dst=dst_ip) / - UDP(dport=self.udp_port_out, sport=20)), + Ether(src=src_mac, dst=dst_mac) + / sa.encrypt( + IP(src=src_ip, dst=dst_ip) / UDP(dport=self.udp_port_out, sport=20) + ), # ICMP - Ether(src=src_mac, dst=dst_mac) / - sa.encrypt(IP(src=src_ip, dst=dst_ip) / - ICMP(id=self.icmp_id_out, type='echo-request')) + Ether(src=src_mac, dst=dst_mac) + / sa.encrypt( + IP(src=src_ip, dst=dst_ip) + / ICMP(id=self.icmp_id_out, type="echo-request") + ), ] def verify_capture_plain(self, capture): for packet in capture: try: self.assert_packet_checksums_valid(packet) - self.assert_equal(packet[IP].src, self.tun_if.remote_ip4, - "decrypted packet source address") - self.assert_equal(packet[IP].dst, self.pg1.remote_ip4, - "decrypted packet destination address") + self.assert_equal( + packet[IP].src, + self.tun_if.remote_ip4, + "decrypted packet source address", + ) + self.assert_equal( + packet[IP].dst, + self.pg1.remote_ip4, + "decrypted packet destination address", + ) if packet.haslayer(TCP): self.assertFalse( packet.haslayer(UDP), - "unexpected UDP header in decrypted packet") - self.assert_equal(packet[TCP].dport, self.tcp_port_in, - "decrypted packet TCP destination port") + "unexpected UDP header in decrypted packet", + ) + self.assert_equal( + packet[TCP].dport, + self.tcp_port_in, + "decrypted packet TCP destination port", + ) elif packet.haslayer(UDP): if packet[UDP].payload: self.assertFalse( packet[UDP][1].haslayer(UDP), - "unexpected UDP header in decrypted packet") - self.assert_equal(packet[UDP].dport, self.udp_port_in, - "decrypted packet UDP destination port") + "unexpected UDP header in decrypted packet", + ) + self.assert_equal( + packet[UDP].dport, + self.udp_port_in, + "decrypted packet UDP destination port", + ) else: self.assertFalse( packet.haslayer(UDP), - "unexpected UDP header in decrypted packet") - self.assert_equal(packet[ICMP].id, self.icmp_id_in, - "decrypted packet ICMP ID") + "unexpected UDP header in decrypted packet", + ) + self.assert_equal( + packet[ICMP].id, self.icmp_id_in, "decrypted packet ICMP ID" + ) except Exception: - self.logger.error( - ppp("Unexpected or invalid plain packet:", packet)) + self.logger.error(ppp("Unexpected or invalid plain packet:", packet)) raise def verify_capture_encrypted(self, capture, sa): @@ -139,19 +158,25 @@ class IPSecNATTestCase(TemplateIpsec): copy = packet.__class__(scapy.compat.raw(packet)) del copy[UDP].len copy = packet.__class__(scapy.compat.raw(copy)) - self.assert_equal(packet[UDP].len, copy[UDP].len, - "UDP header length") + self.assert_equal(packet[UDP].len, copy[UDP].len, "UDP header length") self.assert_packet_checksums_valid(packet) self.assertIn(ESP, packet[IP]) decrypt_pkt = sa.decrypt(packet[IP]) self.assert_packet_checksums_valid(decrypt_pkt) - self.assert_equal(decrypt_pkt[IP].src, self.pg1.remote_ip4, - "encrypted packet source address") - self.assert_equal(decrypt_pkt[IP].dst, self.tun_if.remote_ip4, - "encrypted packet destination address") + self.assert_equal( + decrypt_pkt[IP].src, + self.pg1.remote_ip4, + "encrypted packet source address", + ) + self.assert_equal( + decrypt_pkt[IP].dst, + self.tun_if.remote_ip4, + "encrypted packet destination address", + ) except Exception: self.logger.error( - ppp("Unexpected or invalid encrypted packet:", packet)) + ppp("Unexpected or invalid encrypted packet:", packet) + ) raise def config_esp_tun(self, params): @@ -166,104 +191,153 @@ class IPSecNATTestCase(TemplateIpsec): crypt_key = params.crypt_key addr_any = params.addr_any addr_bcast = params.addr_bcast - flags = (VppEnum.vl_api_ipsec_sad_flags_t. - IPSEC_API_SAD_FLAG_UDP_ENCAP) + flags = VppEnum.vl_api_ipsec_sad_flags_t.IPSEC_API_SAD_FLAG_UDP_ENCAP e = VppEnum.vl_api_ipsec_spd_action_t - VppIpsecSA(self, scapy_tun_sa_id, scapy_tun_spi, - auth_algo_vpp_id, auth_key, - crypt_algo_vpp_id, crypt_key, - self.vpp_esp_protocol, - self.pg1.remote_addr[addr_type], - self.tun_if.remote_addr[addr_type], - flags=flags).add_vpp_config() - VppIpsecSA(self, vpp_tun_sa_id, vpp_tun_spi, - auth_algo_vpp_id, auth_key, - crypt_algo_vpp_id, crypt_key, - self.vpp_esp_protocol, - self.tun_if.remote_addr[addr_type], - self.pg1.remote_addr[addr_type], - flags=flags).add_vpp_config() + VppIpsecSA( + self, + scapy_tun_sa_id, + scapy_tun_spi, + auth_algo_vpp_id, + auth_key, + crypt_algo_vpp_id, + crypt_key, + self.vpp_esp_protocol, + self.pg1.remote_addr[addr_type], + self.tun_if.remote_addr[addr_type], + flags=flags, + ).add_vpp_config() + VppIpsecSA( + self, + vpp_tun_sa_id, + vpp_tun_spi, + auth_algo_vpp_id, + auth_key, + crypt_algo_vpp_id, + crypt_key, + self.vpp_esp_protocol, + self.tun_if.remote_addr[addr_type], + self.pg1.remote_addr[addr_type], + flags=flags, + ).add_vpp_config() - VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id, - addr_any, addr_bcast, - addr_any, addr_bcast, - socket.IPPROTO_ESP).add_vpp_config() - VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id, - addr_any, addr_bcast, - addr_any, addr_bcast, - socket.IPPROTO_ESP, - is_outbound=0).add_vpp_config() - VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id, - addr_any, addr_bcast, - addr_any, addr_bcast, - socket.IPPROTO_UDP, - remote_port_start=4500, - remote_port_stop=4500).add_vpp_config() - VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id, - addr_any, addr_bcast, - addr_any, addr_bcast, - socket.IPPROTO_UDP, - remote_port_start=4500, - remote_port_stop=4500, - is_outbound=0).add_vpp_config() - VppIpsecSpdEntry(self, self.tun_spd, vpp_tun_sa_id, - self.tun_if.remote_addr[addr_type], - self.tun_if.remote_addr[addr_type], - self.pg1.remote_addr[addr_type], - self.pg1.remote_addr[addr_type], - 0, priority=10, - policy=e.IPSEC_API_SPD_ACTION_PROTECT, - is_outbound=0).add_vpp_config() - VppIpsecSpdEntry(self, self.tun_spd, scapy_tun_sa_id, - self.pg1.remote_addr[addr_type], - self.pg1.remote_addr[addr_type], - self.tun_if.remote_addr[addr_type], - self.tun_if.remote_addr[addr_type], - 0, policy=e.IPSEC_API_SPD_ACTION_PROTECT, - priority=10).add_vpp_config() + VppIpsecSpdEntry( + self, + self.tun_spd, + scapy_tun_sa_id, + addr_any, + addr_bcast, + addr_any, + addr_bcast, + socket.IPPROTO_ESP, + ).add_vpp_config() + VppIpsecSpdEntry( + self, + self.tun_spd, + scapy_tun_sa_id, + addr_any, + addr_bcast, + addr_any, + addr_bcast, + socket.IPPROTO_ESP, + is_outbound=0, + ).add_vpp_config() + VppIpsecSpdEntry( + self, + self.tun_spd, + scapy_tun_sa_id, + addr_any, + addr_bcast, + addr_any, + addr_bcast, + socket.IPPROTO_UDP, + remote_port_start=4500, + remote_port_stop=4500, + ).add_vpp_config() + VppIpsecSpdEntry( + self, + self.tun_spd, + scapy_tun_sa_id, + addr_any, + addr_bcast, + addr_any, + addr_bcast, + socket.IPPROTO_UDP, + remote_port_start=4500, + remote_port_stop=4500, + is_outbound=0, + ).add_vpp_config() + VppIpsecSpdEntry( + self, + self.tun_spd, + vpp_tun_sa_id, + self.tun_if.remote_addr[addr_type], + self.tun_if.remote_addr[addr_type], + self.pg1.remote_addr[addr_type], + self.pg1.remote_addr[addr_type], + socket.IPPROTO_RAW, + priority=10, + policy=e.IPSEC_API_SPD_ACTION_PROTECT, + is_outbound=0, + ).add_vpp_config() + VppIpsecSpdEntry( + self, + self.tun_spd, + scapy_tun_sa_id, + self.pg1.remote_addr[addr_type], + self.pg1.remote_addr[addr_type], + self.tun_if.remote_addr[addr_type], + self.tun_if.remote_addr[addr_type], + socket.IPPROTO_RAW, + policy=e.IPSEC_API_SPD_ACTION_PROTECT, + priority=10, + ).add_vpp_config() def test_ipsec_nat_tun(self): - """ IPSec/NAT tunnel test case """ + """IPSec/NAT tunnel test case""" p = self.ipv4_params - scapy_tun_sa = SecurityAssociation(ESP, spi=p.scapy_tun_spi, - crypt_algo=p.crypt_algo, - crypt_key=p.crypt_key, - auth_algo=p.auth_algo, - auth_key=p.auth_key, - tunnel_header=IP( - src=self.pg1.remote_ip4, - dst=self.tun_if.remote_ip4), - nat_t_header=UDP( - sport=4500, - dport=4500)) + scapy_tun_sa = SecurityAssociation( + ESP, + spi=p.scapy_tun_spi, + crypt_algo=p.crypt_algo, + crypt_key=p.crypt_key, + auth_algo=p.auth_algo, + auth_key=p.auth_key, + tunnel_header=IP(src=self.pg1.remote_ip4, dst=self.tun_if.remote_ip4), + nat_t_header=UDP(sport=4500, dport=4500), + ) # in2out - from private network to public pkts = self.create_stream_plain( - self.pg1.remote_mac, self.pg1.local_mac, - self.pg1.remote_ip4, self.tun_if.remote_ip4) + self.pg1.remote_mac, + self.pg1.local_mac, + self.pg1.remote_ip4, + self.tun_if.remote_ip4, + ) self.pg1.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) self.pg_start() capture = self.tun_if.get_capture(len(pkts)) self.verify_capture_encrypted(capture, scapy_tun_sa) - vpp_tun_sa = SecurityAssociation(ESP, - spi=p.vpp_tun_spi, - crypt_algo=p.crypt_algo, - crypt_key=p.crypt_key, - auth_algo=p.auth_algo, - auth_key=p.auth_key, - tunnel_header=IP( - src=self.tun_if.remote_ip4, - dst=self.pg1.remote_ip4), - nat_t_header=UDP( - sport=4500, - dport=4500)) + vpp_tun_sa = SecurityAssociation( + ESP, + spi=p.vpp_tun_spi, + crypt_algo=p.crypt_algo, + crypt_key=p.crypt_key, + auth_algo=p.auth_algo, + auth_key=p.auth_key, + tunnel_header=IP(src=self.tun_if.remote_ip4, dst=self.pg1.remote_ip4), + nat_t_header=UDP(sport=4500, dport=4500), + ) # out2in - from public network to private pkts = self.create_stream_encrypted( - self.tun_if.remote_mac, self.tun_if.local_mac, - self.tun_if.remote_ip4, self.pg1.remote_ip4, vpp_tun_sa) + self.tun_if.remote_mac, + self.tun_if.local_mac, + self.tun_if.remote_ip4, + self.pg1.remote_ip4, + vpp_tun_sa, + ) self.logger.info(ppc("Sending packets:", pkts)) self.tun_if.add_stream(pkts) self.pg_enable_capture(self.pg_interfaces) |