}) ip4_and_esp_header_t;
/* *INDENT-ON* */
+/* *INDENT-OFF* */
+typedef CLIB_PACKED (struct {
+ ip4_header_t ip4;
+ udp_header_t udp;
+ esp_header_t esp;
+}) ip4_and_udp_and_esp_header_t;
+/* *INDENT-ON* */
+
/* *INDENT-OFF* */
typedef CLIB_PACKED (struct {
ip6_header_t ip6;
#include <vnet/vnet.h>
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
+#include <vnet/udp/udp.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/esp.h>
{
u32 spi;
u32 seq;
+ u8 udp_encap;
ipsec_crypto_alg_t crypto_alg;
ipsec_integ_alg_t integ_alg;
} esp_encrypt_trace_t;
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *);
- s = format (s, "esp: spi %u seq %u crypto %U integrity %U",
+ s = format (s, "esp: spi %u seq %u crypto %U integrity %U%s",
t->spi, t->seq,
format_ipsec_crypto_alg, t->crypto_alg,
- format_ipsec_integ_alg, t->integ_alg);
+ format_ipsec_integ_alg, t->integ_alg,
+ t->udp_encap ? " udp-encap-enabled" : "");
return s;
}
vlib_buffer_t *i_b0, *o_b0 = 0;
u32 sa_index0;
ipsec_sa_t *sa0;
- ip4_and_esp_header_t *ih0, *oh0 = 0;
+ ip4_and_esp_header_t *oh0 = 0;
ip6_and_esp_header_t *ih6_0, *oh6_0 = 0;
+ ip4_and_udp_and_esp_header_t *iuh0, *ouh0 = 0;
uword last_empty_buffer;
esp_header_t *o_esp0;
esp_footer_t *f0;
u8 is_ipv6;
- u8 ip_hdr_size;
+ u8 ip_udp_hdr_size;
u8 next_hdr_type;
u32 ip_proto = 0;
u8 transport_mode = 0;
o_b0 = vlib_get_buffer (vm, o_bi0);
o_b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
o_b0->current_data = sizeof (ethernet_header_t);
- ih0 = vlib_buffer_get_current (i_b0);
+ iuh0 = vlib_buffer_get_current (i_b0);
vlib_prefetch_buffer_with_index (vm,
empty_buffers[last_empty_buffer -
1], STORE);
/* is ipv6 */
if (PREDICT_FALSE
- ((ih0->ip4.ip_version_and_header_length & 0xF0) == 0x60))
+ ((iuh0->ip4.ip_version_and_header_length & 0xF0) == 0x60))
{
is_ipv6 = 1;
ih6_0 = vlib_buffer_get_current (i_b0);
- ip_hdr_size = sizeof (ip6_header_t);
next_hdr_type = IP_PROTOCOL_IPV6;
oh6_0 = vlib_buffer_get_current (o_b0);
- o_esp0 = vlib_buffer_get_current (o_b0) + sizeof (ip6_header_t);
oh6_0->ip6.ip_version_traffic_class_and_flow_label =
ih6_0->ip6.ip_version_traffic_class_and_flow_label;
oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP;
+ ip_udp_hdr_size = sizeof (ip6_header_t);
+ o_esp0 = vlib_buffer_get_current (o_b0) + ip_udp_hdr_size;
oh6_0->ip6.hop_limit = 254;
oh6_0->ip6.src_address.as_u64[0] =
ih6_0->ip6.src_address.as_u64[0];
ih6_0->ip6.dst_address.as_u64[0];
oh6_0->ip6.dst_address.as_u64[1] =
ih6_0->ip6.dst_address.as_u64[1];
- oh6_0->esp.spi = clib_net_to_host_u32 (sa0->spi);
- oh6_0->esp.seq = clib_net_to_host_u32 (sa0->seq);
+ o_esp0->spi = clib_net_to_host_u32 (sa0->spi);
+ o_esp0->seq = clib_net_to_host_u32 (sa0->seq);
ip_proto = ih6_0->ip6.protocol;
next0 = ESP_ENCRYPT_NEXT_IP6_LOOKUP;
else
{
is_ipv6 = 0;
- ip_hdr_size = sizeof (ip4_header_t);
next_hdr_type = IP_PROTOCOL_IP_IN_IP;
oh0 = vlib_buffer_get_current (o_b0);
- o_esp0 = vlib_buffer_get_current (o_b0) + sizeof (ip4_header_t);
+ ouh0 = vlib_buffer_get_current (o_b0);
oh0->ip4.ip_version_and_header_length = 0x45;
- oh0->ip4.tos = ih0->ip4.tos;
+ oh0->ip4.tos = iuh0->ip4.tos;
oh0->ip4.fragment_id = 0;
oh0->ip4.flags_and_fragment_offset = 0;
oh0->ip4.ttl = 254;
- oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
- oh0->ip4.src_address.as_u32 = ih0->ip4.src_address.as_u32;
- oh0->ip4.dst_address.as_u32 = ih0->ip4.dst_address.as_u32;
- oh0->esp.spi = clib_net_to_host_u32 (sa0->spi);
- oh0->esp.seq = clib_net_to_host_u32 (sa0->seq);
- ip_proto = ih0->ip4.protocol;
+ if (sa0->udp_encap)
+ {
+ ouh0->udp.src_port =
+ clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+ ouh0->udp.dst_port =
+ clib_host_to_net_u16 (UDP_DST_PORT_ipsec);
+ ouh0->udp.checksum = 0;
+ ouh0->ip4.protocol = IP_PROTOCOL_UDP;
+ ip_udp_hdr_size =
+ sizeof (udp_header_t) + sizeof (ip4_header_t);
+ }
+ else
+ {
+ oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP;
+ ip_udp_hdr_size = sizeof (ip4_header_t);
+ }
+ o_esp0 = vlib_buffer_get_current (o_b0) + ip_udp_hdr_size;
+ oh0->ip4.src_address.as_u32 = iuh0->ip4.src_address.as_u32;
+ oh0->ip4.dst_address.as_u32 = iuh0->ip4.dst_address.as_u32;
+ o_esp0->spi = clib_net_to_host_u32 (sa0->spi);
+ o_esp0->seq = clib_net_to_host_u32 (sa0->seq);
+ ip_proto = iuh0->ip4.protocol;
next0 = ESP_ENCRYPT_NEXT_IP4_LOOKUP;
}
vnet_buffer (o_b0)->sw_if_index[VLIB_TX] =
vnet_buffer (i_b0)->sw_if_index[VLIB_TX];
}
- vlib_buffer_advance (i_b0, ip_hdr_size);
+ vlib_buffer_advance (i_b0, ip_udp_hdr_size);
}
ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG);
f0->pad_length = pad_bytes;
f0->next_header = next_hdr_type;
- o_b0->current_length = ip_hdr_size + sizeof (esp_header_t) +
+ o_b0->current_length = ip_udp_hdr_size + sizeof (esp_header_t) +
BLOCK_SIZE * blocks + IV_SIZE;
vnet_buffer (o_b0)->sw_if_index[VLIB_RX] =
RAND_bytes (iv, sizeof (iv));
clib_memcpy ((u8 *) vlib_buffer_get_current (o_b0) +
- ip_hdr_size + sizeof (esp_header_t), iv,
+ ip_udp_hdr_size + sizeof (esp_header_t), iv,
em->ipsec_proto_main_crypto_algs[sa0->
crypto_alg].iv_size);
esp_encrypt_cbc (sa0->crypto_alg,
(u8 *) vlib_buffer_get_current (i_b0),
(u8 *) vlib_buffer_get_current (o_b0) +
- ip_hdr_size + sizeof (esp_header_t) +
+ ip_udp_hdr_size + sizeof (esp_header_t) +
IV_SIZE, BLOCK_SIZE * blocks,
sa0->crypto_key, iv);
}
sa0->integ_key_len,
(u8 *) o_esp0,
o_b0->current_length -
- ip_hdr_size,
+ ip_udp_hdr_size,
vlib_buffer_get_current (o_b0) +
o_b0->current_length,
sa0->use_esn, sa0->seq_hi);
oh0->ip4.length =
clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, o_b0));
oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
+ if (sa0->udp_encap)
+ {
+ ouh0->udp.length =
+ clib_host_to_net_u16 (oh0->ip4.length -
+ ip4_header_bytes (&oh0->ip4));
+ }
}
if (transport_mode)
vlib_add_trace (vm, node, o_b0, sizeof (*tr));
tr->spi = sa0->spi;
tr->seq = sa0->seq - 1;
+ tr->udp_encap = sa0->udp_encap;
tr->crypto_alg = sa0->crypto_alg;
tr->integ_alg = sa0->integ_alg;
}
@param is_tunnel_ipv6 - IPsec tunnel mode is IPv6 if non-zero, else IPv4 tunnel only valid if is_tunnel is non-zero
@param tunnel_src_address - IPsec tunnel source address IPv6 if is_tunnel_ipv6 is non-zero, else IPv4. Only valid if is_tunnel is non-zero
@param tunnel_dst_address - IPsec tunnel destination address IPv6 if is_tunnel_ipv6 is non-zero, else IPv4. Only valid if is_tunnel is non-zero
+ @param udp_encap - enable UDP encapsulation for NAT traversal
To be added:
Anti-replay
u8 is_tunnel_ipv6;
u8 tunnel_src_address[16];
u8 tunnel_dst_address[16];
+ u8 udp_encap;
};
/** \brief IPsec: Update Security Association keys
@param last_seq_hi - high 32 bits of highest ESN received inbound
@param replay_window - bit map of seq nums received relative to last_seq if using anti-replay
@param total_data_size - total bytes sent or received
+ @param udp_encap - 1 if UDP encap enabled, 0 otherwise
*/
define ipsec_sa_details {
u32 context;
u64 replay_window;
u64 total_data_size;
+ u8 udp_encap;
};
/** \brief Set key on IPsec interface
#include <vnet/api_errno.h>
#include <vnet/ip/ip.h>
#include <vnet/interface.h>
+#include <vnet/udp/udp.h>
#include <vnet/ipsec/ipsec.h>
#include <vnet/ipsec/ikev2.h>
#include <vnet/ipsec/esp.h>
#include <vnet/ipsec/ah.h>
+
ipsec_main_t ipsec_main;
u32
}
int
-ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add)
+ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add,
+ u8 udp_encap)
{
ipsec_main_t *im = &ipsec_main;
ipsec_sa_t *sa = 0;
pool_get (im->sad, sa);
clib_memcpy (sa, new_sa, sizeof (*sa));
sa_index = sa - im->sad;
+ sa->udp_encap = udp_encap ? 1 : 0;
hash_set (im->sa_index_by_sa_id, sa->id, sa_index);
if (im->cb.add_del_sa_sess_cb)
{
u8 is_tunnel;
u8 is_tunnel_ip6;
+ u8 udp_encap;
ip46_address_t tunnel_src_addr;
ip46_address_t tunnel_dst_addr;
int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add);
int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy,
int is_add);
-int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add);
+int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add,
+ u8 udp_encap);
int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update);
u32 ipsec_get_sa_index_by_sa_id (u32 sa_id);
goto out;
}
- rv = ipsec_add_del_sa (vm, &sa, mp->is_add);
+ rv = ipsec_add_del_sa (vm, &sa, mp->is_add, mp->udp_encap);
#else
rv = VNET_API_ERROR_UNIMPLEMENTED;
goto out;
if (sa->use_anti_replay)
mp->replay_window = clib_host_to_net_u64 (sa->replay_window);
mp->total_data_size = clib_host_to_net_u64 (sa->total_data_size);
+ mp->udp_encap = sa->udp_encap;
vl_api_send_msg (reg, (u8 *) mp);
}
goto done;
}
- ipsec_add_del_sa (vm, &sa, is_add);
+ ipsec_add_del_sa (vm, &sa, is_add, 0 /* enable nat traversal */ );
done:
unformat_free (line_input);
/* *INDENT-OFF* */
pool_foreach (sa, im->sad, ({
if (sa->id) {
- vlib_cli_output(vm, "sa %u spi %u mode %s protocol %s", sa->id, sa->spi,
+ vlib_cli_output(vm, "sa %u spi %u mode %s protocol %s%s", sa->id, sa->spi,
sa->is_tunnel ? "tunnel" : "transport",
- sa->protocol ? "esp" : "ah");
+ sa->protocol ? "esp" : "ah",
+ sa->udp_encap ? " udp-encap-enabled" : "");
if (sa->protocol == IPSEC_PROTOCOL_ESP) {
vlib_cli_output(vm, " crypto alg %U%s%U integrity alg %U%s%U",
format_ipsec_crypto_alg, sa->crypto_alg,
ip0 = vlib_buffer_get_current (b0);
- if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP))
+ if (PREDICT_TRUE
+ (ip0->protocol == IP_PROTOCOL_IPSEC_ESP
+ || ip0->protocol == IP_PROTOCOL_UDP))
{
#if 0
clib_warning
#endif
esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
+ if (PREDICT_FALSE (ip0->protocol == IP_PROTOCOL_UDP))
+ {
+ esp0 =
+ (esp_header_t *) ((u8 *) esp0 + sizeof (udp_header_t));
+ }
+ /* FIXME TODO missing check whether there is enough data inside
+ * IP/UDP to contain ESP header & stuff ? */
p0 = ipsec_input_protect_policy_match (spd0,
clib_net_to_host_u32
(ip0->src_address.
vnet_buffer (b0)->ipsec.sad_index = p0->sa_index;
vnet_buffer (b0)->ipsec.flags = 0;
next0 = im->esp_decrypt_next_index;
- vlib_buffer_advance (b0, ip4_header_bytes (ip0));
+ vlib_buffer_advance (b0, ((u8 *) esp0 - (u8 *) ip0));
goto trace0;
}
{
ipsec_input_trace_t *tr =
vlib_add_trace (vm, node, b0, sizeof (*tr));
- if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)
+ if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP ||
+ ip0->protocol == IP_PROTOCOL_UDP)
{
if (p0)
tr->sa_id = p0->sa_id;
_ (3785, bfd_echo4) \
_ (4341, lisp_gpe) \
_ (4342, lisp_cp) \
+_ (4500, ipsec) \
_ (4739, ipfix) \
_ (4789, vxlan) \
_ (4789, vxlan6) \
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=51)
+ protocol=socket.IPPROTO_AH)
cls.vapi.ipsec_spd_add_del_entry(
spd_id,
l_startaddr,
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=51,
+ protocol=socket.IPPROTO_AH,
is_outbound=0)
l_startaddr = l_stopaddr = socket.inet_pton(
socket.AF_INET, cls.remote_pg0_lb_addr)
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=51)
+ protocol=socket.IPPROTO_AH)
cls.vapi.ipsec_spd_add_del_entry(
spd_id,
l_startaddr,
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=51,
+ protocol=socket.IPPROTO_AH,
is_outbound=0)
l_startaddr = l_stopaddr = cls.pg2.local_ip4n
r_startaddr = r_stopaddr = cls.pg2.remote_ip4n
TUNNEL MODE:
--- encrypt --- plain ---
- |pg0| -------> |VPP| ------> |pg1|
+ |pg0| <------- |VPP| <------ |pg1|
--- --- ---
--- decrypt --- plain ---
- |pg0| <------- |VPP| <------ |pg1|
+ |pg0| -------> |VPP| ------> |pg1|
--- --- ---
Note : IPv6 is not covered
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=50)
+ protocol=socket.IPPROTO_ESP)
cls.vapi.ipsec_spd_add_del_entry(
spd_id,
l_startaddr,
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=50,
+ protocol=socket.IPPROTO_ESP,
is_outbound=0)
l_startaddr = l_stopaddr = socket.inet_pton(
socket.AF_INET, cls.remote_pg0_lb_addr)
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=50)
+ protocol=socket.IPPROTO_ESP)
cls.vapi.ipsec_spd_add_del_entry(
spd_id,
l_startaddr,
l_stopaddr,
r_startaddr,
r_stopaddr,
- protocol=50,
+ protocol=socket.IPPROTO_ESP,
is_outbound=0)
l_startaddr = l_stopaddr = cls.pg2.local_ip4n
r_startaddr = r_stopaddr = cls.pg2.remote_ip4n
--- /dev/null
+#!/usr/bin/env python
+
+import socket
+
+from scapy.layers.l2 import Ether
+from scapy.layers.inet import ICMP, IP, TCP, UDP
+from scapy.layers.ipsec import SecurityAssociation, ESP
+from util import ppp, ppc
+from framework import VppTestCase
+
+
+class IPSecNATTestCase(VppTestCase):
+ """ IPSec/NAT
+
+ TRANSPORT MODE:
+
+ --- encrypt ---
+ |pg2| <-------> |VPP|
+ --- decrypt ---
+
+ TUNNEL MODE:
+
+
+ public network | private network
+ --- encrypt --- plain ---
+ |pg0| <------- |VPP| <------ |pg1|
+ --- --- ---
+
+ --- decrypt --- plain ---
+ |pg0| -------> |VPP| ------> |pg1|
+ --- --- ---
+ """
+
+ remote_pg0_client_addr = '1.1.1.1'
+
+ @classmethod
+ def setUpClass(cls):
+ super(IPSecNATTestCase, cls).setUpClass()
+ cls.create_pg_interfaces(range(2))
+ for i in cls.pg_interfaces:
+ i.configure_ipv4_neighbors()
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ cls.tcp_port_in = 6303
+ cls.tcp_port_out = 6303
+ cls.udp_port_in = 6304
+ cls.udp_port_out = 6304
+ cls.icmp_id_in = 6305
+ cls.icmp_id_out = 6305
+ cls.config_esp_tun()
+ cls.logger.info(cls.vapi.ppcli("show ipsec"))
+
+ 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),
+ # UDP
+ 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')
+ ]
+
+ 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)),
+ # 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)),
+ # 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'))
+ ]
+
+ def check_checksum(self, pkt, layer):
+ """ Check checksum of the packet on given layer """
+ new = pkt.__class__(str(pkt))
+ del new[layer].chksum
+ new = new.__class__(str(new))
+ self.assertEqual(new[layer].chksum, pkt[layer].chksum)
+
+ def check_ip_checksum(self, pkt):
+ return self.check_checksum(pkt, 'IP')
+
+ def check_tcp_checksum(self, pkt):
+ return self.check_checksum(pkt, 'TCP')
+
+ def check_udp_checksum(self, pkt):
+ return self.check_checksum(pkt, 'UDP')
+
+ def check_icmp_checksum(self, pkt):
+ return self.check_checksum(pkt, 'ICMP')
+
+ def verify_capture_plain(self, capture):
+ for packet in capture:
+ try:
+ self.check_ip_checksum(packet)
+ self.assert_equal(packet[IP].src, self.pg0.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")
+ self.check_tcp_checksum(packet)
+ 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")
+ 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")
+ self.check_icmp_checksum(packet)
+ except Exception:
+ self.logger.error(
+ ppp("Unexpected or invalid plain packet:", packet))
+ raise
+
+ def verify_capture_encrypted(self, capture, sa):
+ for packet in capture:
+ try:
+ self.assertIn(ESP, packet[IP])
+ decrypt_pkt = sa.decrypt(packet[IP])
+ self.assert_equal(decrypt_pkt[IP].src, self.pg1.remote_ip4,
+ "encrypted packet source address")
+ self.assert_equal(decrypt_pkt[IP].dst, self.pg0.remote_ip4,
+ "encrypted packet destination address")
+ # if decrypt_pkt.haslayer(TCP):
+ # self.tcp_port_out = decrypt_pkt[TCP].sport
+ # elif decrypt_pkt.haslayer(UDP):
+ # self.udp_port_out = decrypt_pkt[UDP].sport
+ # else:
+ # self.icmp_id_out = decrypt_pkt[ICMP].id
+ except Exception:
+ self.logger.error(
+ ppp("Unexpected or invalid encrypted packet:", packet))
+ raise
+
+ @classmethod
+ def config_esp_tun(cls):
+ spd_id = 1
+ remote_sa_id = 10
+ local_sa_id = 20
+ remote_tun_spi = 1001
+ local_tun_spi = 1000
+ client = socket.inet_pton(socket.AF_INET, cls.remote_pg0_client_addr)
+ cls.vapi.ip_add_del_route(client, 32, cls.pg0.remote_ip4n)
+ cls.vapi.ipsec_sad_add_del_entry(remote_sa_id, remote_tun_spi,
+ cls.pg1.remote_ip4n,
+ cls.pg0.remote_ip4n,
+ integrity_key_length=20,
+ crypto_key_length=16,
+ protocol=1, udp_encap=1)
+ cls.vapi.ipsec_sad_add_del_entry(local_sa_id, local_tun_spi,
+ cls.pg0.remote_ip4n,
+ cls.pg1.remote_ip4n,
+ integrity_key_length=20,
+ crypto_key_length=16,
+ protocol=1, udp_encap=1)
+ cls.vapi.ipsec_spd_add_del(spd_id)
+ cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg0.sw_if_index)
+ l_startaddr = r_startaddr = socket.inet_pton(socket.AF_INET,
+ "0.0.0.0")
+ l_stopaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
+ "255.255.255.255")
+ cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
+ r_startaddr, r_stopaddr,
+ protocol=socket.IPPROTO_ESP)
+ cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
+ r_startaddr, r_stopaddr,
+ protocol=socket.IPPROTO_ESP,
+ is_outbound=0)
+ cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
+ r_startaddr, r_stopaddr,
+ remote_port_start=4500,
+ remote_port_stop=4500,
+ protocol=socket.IPPROTO_UDP)
+ cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
+ r_startaddr, r_stopaddr,
+ remote_port_start=4500,
+ remote_port_stop=4500,
+ protocol=socket.IPPROTO_UDP,
+ is_outbound=0)
+ l_startaddr = l_stopaddr = cls.pg0.remote_ip4n
+ r_startaddr = r_stopaddr = cls.pg1.remote_ip4n
+ cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
+ r_startaddr, r_stopaddr,
+ priority=10, policy=3,
+ is_outbound=0, sa_id=local_sa_id)
+ cls.vapi.ipsec_spd_add_del_entry(spd_id, r_startaddr, r_stopaddr,
+ l_startaddr, l_stopaddr,
+ priority=10, policy=3,
+ sa_id=remote_sa_id)
+
+ def test_ipsec_nat_tun(self):
+ """ IPSec/NAT tunnel test case """
+ local_tun_sa = SecurityAssociation(ESP, spi=0x000003e9,
+ crypt_algo='AES-CBC',
+ crypt_key='JPjyOWBeVEQiMe7h',
+ auth_algo='HMAC-SHA1-96',
+ auth_key='C91KUR9GYMm5GfkEvNjX',
+ tunnel_header=IP(
+ src=self.pg1.remote_ip4,
+ dst=self.pg0.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.pg0.remote_ip4)
+ self.pg1.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg0.get_capture(len(pkts))
+ self.verify_capture_encrypted(capture, local_tun_sa)
+
+ remote_tun_sa = SecurityAssociation(ESP, spi=0x000003e8,
+ crypt_algo='AES-CBC',
+ crypt_key='JPjyOWBeVEQiMe7h',
+ auth_algo='HMAC-SHA1-96',
+ auth_key='C91KUR9GYMm5GfkEvNjX',
+ tunnel_header=IP(
+ src=self.pg0.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.pg0.remote_mac, self.pg0.local_mac,
+ self.pg0.remote_ip4, self.pg1.remote_ip4, remote_tun_sa)
+ self.logger.info(ppc("Sending packets:", pkts))
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ capture = self.pg1.get_capture(len(pkts))
+ self.verify_capture_plain(capture)
:returns: reply from the API
"""
return self.api(
- self.papi.ipsec_interface_add_del_spd, {
- 'spd_id': spd_id,
- 'sw_if_index': sw_if_index, 'is_add': is_add})
+ self.papi.ipsec_interface_add_del_spd,
+ {'spd_id': spd_id, 'sw_if_index': sw_if_index, 'is_add': is_add})
def ipsec_sad_add_del_entry(self,
sad_id,
crypto_key_length=0,
crypto_key='JPjyOWBeVEQiMe7h',
is_add=1,
- is_tunnel=1):
+ is_tunnel=1,
+ udp_encap=0):
""" IPSEC SA add/del
Sample CLI : 'ipsec sa add 10 spi 1001 esp \
crypto-key 4a506a794f574265564551694d653768 \
'crypto_key_length': crypto_key_length,
'crypto_key': crypto_key,
'is_add': is_add,
- 'is_tunnel': is_tunnel})
+ 'is_tunnel': is_tunnel,
+ 'udp_encap': udp_encap})
def ipsec_spd_add_del_entry(self,
spd_id,
Code Review / vpp.git / commitdiff