Traffic not routed to VPN

[fedespagno]

We successfully created an ikev1 tunnel from ASA to a PIX. Moreover the ASA is not routing the traffic through the VPN 

The ASA (9.5(1)) config is straightforward. It is connected to the internet using a public IP and using PAT with a single gateway static route This works perfectly.

Then we added the usual crypto parameters (using wizard and manually checked several times)

The tunnel is up on both sides (AM_ACTIVE on ASA and QM_IDLE on PIX) 

The problem is that the traffic is never routed from ASA internal network  to VPN tunnel (Bytes TX = 0) we can see some incoming traffic (ping or other connect) (Bytes RX>0) but remote PIX network can't reach ASA internal network

Our checks

• Ikev1 enabled for external ASA interface
• NAT disabled (unnatted) for access list (xlate ok)
• access list correct (ping remote network creates the tunnel)
• sysopt VPN enabled 
• dynamic routing table correct
• ... 

Here is the complete config for ASA 

ASA Version 9.5(1) 
!
hostname XXXXXX
domain-name XXXXXX
enable password XXXXXX encrypted
names
!
interface GigabitEthernet1/1
 nameif outside
 security-level 0
 ip address 134.159.113.54 255.255.255.252 
!
interface GigabitEthernet1/2
 nameif inside
 security-level 100
 ip address 192.168.1.1 255.255.255.0 
!
[omitted]
ftp mode passive
clock timezone HKST 8
dns server-group DefaultDNS
 domain-name XXXXX
object network RegusDefaultGateway
 host 134.159.113.53
 description RegusDefaultGateway
object network MilanDMZ
 subnet 10.178.27.0 255.255.255.0
object network MilanPrivate
 subnet 172.16.1.0 255.255.255.0
object network NETWORK_OBJ_192.168.1.0_24
 subnet 192.168.1.0 255.255.255.0
object network MilanDMZ2
 range 10.178.27.1 10.178.27.254
 description MilanDMZ2
object-group network MilanNet
 description All Milan Networks
 network-object object MilanDMZ
 network-object object MilanPrivate
access-list outside_cryptomap extended permit ip 192.168.1.0 255.255.255.0 object MilanDMZ log debugging 
access-list inside_access_in extended permit ip any any log disable 
pager lines 24
logging enable
logging asdm informational
mtu outside 1500
mtu inside 1500
icmp unreachable rate-limit 1 burst-size 1
icmp permit any inside
asdm history enable
arp timeout 14400
no arp permit-nonconnected
nat (inside,outside) source static NETWORK_OBJ_192.168.1.0_24 NETWORK_OBJ_192.168.1.0_24 destination static MilanDMZ2 MilanDMZ2 no-proxy-arp route-lookup
!
nat (inside,outside) after-auto source dynamic any interface
access-group inside_access_in in interface inside
route outside 0.0.0.0 0.0.0.0 134.159.113.53 1
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
user-identity default-domain LOCAL
aaa authentication telnet console LOCAL 
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
service sw-reset-button
crypto ipsec ikev1 transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-AES-128-SHA-TRANS esp-aes esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-AES-128-SHA-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-AES-128-MD5-TRANS esp-aes esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-AES-128-MD5-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-AES-192-SHA-TRANS esp-aes-192 esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-AES-192-SHA-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-AES-192-MD5-TRANS esp-aes-192 esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-AES-192-MD5-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-AES-256-SHA-TRANS esp-aes-256 esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-AES-256-SHA-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-AES-256-MD5-TRANS esp-aes-256 esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-AES-256-MD5-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-3DES-SHA esp-3des esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-3DES-SHA-TRANS esp-3des esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-3DES-SHA-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-3DES-MD5-TRANS esp-3des esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-3DES-MD5-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-DES-SHA esp-des esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-DES-MD5 esp-des esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-DES-SHA-TRANS esp-des esp-sha-hmac 
crypto ipsec ikev1 transform-set ESP-DES-SHA-TRANS mode transport
crypto ipsec ikev1 transform-set ESP-DES-MD5-TRANS esp-des esp-md5-hmac 
crypto ipsec ikev1 transform-set ESP-DES-MD5-TRANS mode transport
crypto ipsec ikev2 ipsec-proposal DES
 protocol esp encryption des
 protocol esp integrity sha-1 md5
crypto ipsec ikev2 ipsec-proposal 3DES
 protocol esp encryption 3des
 protocol esp integrity sha-1 md5
crypto ipsec ikev2 ipsec-proposal AES
 protocol esp encryption aes
 protocol esp integrity sha-1 md5
crypto ipsec ikev2 ipsec-proposal AES192
 protocol esp encryption aes-192
 protocol esp integrity sha-1 md5
crypto ipsec ikev2 ipsec-proposal AES256
 protocol esp encryption aes-256
 protocol esp integrity sha-1 md5
crypto ipsec security-association replay disable
crypto ipsec security-association pmtu-aging infinite
crypto map outside_map 1 match address outside_cryptomap
crypto map outside_map 1 set peer 83.103.75.66 
crypto map outside_map 1 set ikev1 phase1-mode aggressive 
crypto map outside_map 1 set ikev1 transform-set ESP-3DES-SHA
crypto map outside_map 1 set validate-icmp-errors
crypto map outside_map 1 set reverse-route
crypto map outside_map interface outside
crypto ca trustpoint _SmartCallHome_ServerCA
 no validation-usage
 crl configure
crypto ca trustpool policy
crypto ca certificate chain _SmartCallHome_ServerCA
 certificate ca 6ecc7aa5a7032009b8cebcf4e952d491
    308205ec 308204d4 a0030201 0202106e cc7aa5a7 032009b8 cebcf4e9 52d49130 
    0d06092a 864886f7 0d010105 05003081 ca310b30 09060355 04061302 55533117 
    30150603 55040a13 0e566572 69536967 6e2c2049 6e632e31 1f301d06 0355040b 
    13165665 72695369 676e2054 72757374 204e6574 776f726b 313a3038 06035504 
    0b133128 63292032 30303620 56657269 5369676e 2c20496e 632e202d 20466f72 
    20617574 686f7269 7a656420 75736520 6f6e6c79 31453043 06035504 03133c56 
    65726953 69676e20 436c6173 73203320 5075626c 69632050 72696d61 72792043 
    65727469 66696361 74696f6e 20417574 686f7269 7479202d 20473530 1e170d31 
    30303230 38303030 3030305a 170d3230 30323037 32333539 35395a30 81b5310b 
    30090603 55040613 02555331 17301506 0355040a 130e5665 72695369 676e2c20 
    496e632e 311f301d 06035504 0b131656 65726953 69676e20 54727573 74204e65 
    74776f72 6b313b30 39060355 040b1332 5465726d 73206f66 20757365 20617420 
    68747470 733a2f2f 7777772e 76657269 7369676e 2e636f6d 2f727061 20286329 
    3130312f 302d0603 55040313 26566572 69536967 6e20436c 61737320 33205365 
    63757265 20536572 76657220 4341202d 20473330 82012230 0d06092a 864886f7 
    0d010101 05000382 010f0030 82010a02 82010100 b187841f c20c45f5 bcab2597 
    a7ada23e 9cbaf6c1 39b88bca c2ac56c6 e5bb658e 444f4dce 6fed094a d4af4e10 
    9c688b2e 957b899b 13cae234 34c1f35b f3497b62 83488174 d188786c 0253f9bc 
    7f432657 5833833b 330a17b0 d04e9124 ad867d64 12dc744a 34a11d0a ea961d0b 
    15fca34b 3bce6388 d0f82d0c 948610ca b69a3dca eb379c00 48358629 5078e845 
    63cd1941 4ff595ec 7b98d4c4 71b350be 28b38fa0 b9539cf5 ca2c23a9 fd1406e8 
    18b49ae8 3c6e81fd e4cd3536 b351d369 ec12ba56 6e6f9b57 c58b14e7 0ec79ced 
    4a546ac9 4dc5bf11 b1ae1c67 81cb4455 33997f24 9b3f5345 7f861af3 3cfa6d7f 
    81f5b84a d3f58537 1cb5a6d0 09e4187b 384efa0f 02030100 01a38201 df308201 
    db303406 082b0601 05050701 01042830 26302406 082b0601 05050730 01861868 
    7474703a 2f2f6f63 73702e76 65726973 69676e2e 636f6d30 12060355 1d130101 
    ff040830 060101ff 02010030 70060355 1d200469 30673065 060b6086 480186f8 
    45010717 03305630 2806082b 06010505 07020116 1c687474 70733a2f 2f777777 
    2e766572 69736967 6e2e636f 6d2f6370 73302a06 082b0601 05050702 02301e1a 
    1c687474 70733a2f 2f777777 2e766572 69736967 6e2e636f 6d2f7270 61303406 
    03551d1f 042d302b 3029a027 a0258623 68747470 3a2f2f63 726c2e76 65726973 
    69676e2e 636f6d2f 70636133 2d67352e 63726c30 0e060355 1d0f0101 ff040403 
    02010630 6d06082b 06010505 07010c04 61305fa1 5da05b30 59305730 55160969 
    6d616765 2f676966 3021301f 30070605 2b0e0302 1a04148f e5d31a86 ac8d8e6b 
    c3cf806a d448182c 7b192e30 25162368 7474703a 2f2f6c6f 676f2e76 65726973 
    69676e2e 636f6d2f 76736c6f 676f2e67 69663028 0603551d 11042130 1fa41d30 
    1b311930 17060355 04031310 56657269 5369676e 4d504b49 2d322d36 301d0603 
    551d0e04 1604140d 445c1653 44c1827e 1d20ab25 f40163d8 be79a530 1f060355 
    1d230418 30168014 7fd365a7 c2ddecbb f03009f3 4339fa02 af333133 300d0609 
    2a864886 f70d0101 05050003 82010100 0c8324ef ddc30cd9 589cfe36 b6eb8a80 
    4bd1a3f7 9df3cc53 ef829ea3 a1e697c1 589d756c e01d1b4c fad1c12d 05c0ea6e 
    b2227055 d9203340 3307c265 83fa8f43 379bea0e 9a6c70ee f69c803b d937f47a 
    6decd018 7d494aca 99c71928 a2bed877 24f78526 866d8705 404167d1 273aeddc 
    481d22cd 0b0b8bbc f4b17bfd b499a8e9 762ae11a 2d876e74 d388dd1e 22c6df16 
    b62b8214 0a945cf2 50ecafce ff62370d ad65d306 4153ed02 14c8b558 28a1ace0 
    5becb37f 954afb03 c8ad26db e6667812 4ad99f42 fbe198e6 42839b8f 8f6724e8 
    6119b5dd cdb50b26 058ec36e c4c875b8 46cfe218 065ea9ae a8819a47 16de0c28 
    6c2527b9 deb78458 c61f381e a4c4cb66
  quit
crypto ikev2 policy 1
 encryption aes-256
 integrity sha
 group 5 2
 prf sha
 lifetime seconds 86400
crypto ikev2 policy 10
 encryption aes-192
 integrity sha
 group 5 2
 prf sha
 lifetime seconds 86400
crypto ikev2 policy 20
 encryption aes
 integrity sha
 group 5 2
 prf sha
 lifetime seconds 86400
crypto ikev2 policy 30
 encryption 3des
 integrity sha
 group 5 2
 prf sha
 lifetime seconds 86400
crypto ikev2 policy 40
 encryption des
 integrity sha
 group 5 2
 prf sha
 lifetime seconds 86400
crypto ikev2 enable outside
crypto ikev1 enable outside
crypto ikev1 policy 20
 authentication rsa-sig
 encryption aes-256
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 30
 authentication pre-share
 encryption aes-256
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 50
 authentication rsa-sig
 encryption aes-192
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 60
 authentication pre-share
 encryption aes-192
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 80
 authentication rsa-sig
 encryption aes
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 90
 authentication pre-share
 encryption aes
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 110
 authentication rsa-sig
 encryption 3des
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 120
 authentication pre-share
 encryption 3des
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 140
 authentication rsa-sig
 encryption des
 hash sha
 group 2
 lifetime 86400
crypto ikev1 policy 150
 authentication pre-share
 encryption des
 hash sha
 group 2
 lifetime 86400
telnet 192.168.1.0 255.255.255.0 inside
telnet timeout 300
no ssh stricthostkeycheck
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0

dhcpd auto_config outside
!
dhcpd address 192.168.1.5-192.168.1.254 inside
dhcpd dns 134.159.113.33 134.159.113.34 interface inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
group-policy GroupPolicy_83.103.75.66 internal
group-policy GroupPolicy_83.103.75.66 attributes
 vpn-filter value outside_cryptomap
 vpn-tunnel-protocol ikev1 
dynamic-access-policy-record DfltAccessPolicy
username ena_admin password BQqLXJtf551danac encrypted privilege 15
tunnel-group 83.103.75.66 type ipsec-l2l
tunnel-group 83.103.75.66 general-attributes
 default-group-policy GroupPolicy_83.103.75.66
tunnel-group 83.103.75.66 ipsec-attributes
 ikev1 pre-shared-key *****
 ikev2 remote-authentication pre-shared-key *****
 ikev2 local-authentication pre-shared-key *****
!
class-map inspection_default
 match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum client auto
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map 
  inspect ftp 
  inspect h323 h225 
  inspect h323 ras 
  inspect rsh 
  inspect rtsp 
  inspect esmtp 
  inspect sqlnet 
  inspect skinny  
  inspect sunrpc 
  inspect xdmcp 
  inspect sip  
  inspect netbios 
  inspect tftp 
  inspect ip-options 
  inspect icmp 
  inspect icmp error 
!
service-policy global_policy global
prompt hostname context 
call-home reporting anonymous
Cryptochecksum:06ec89bc6c1ec0a40f31a14af7ef6264
: end
asdm history enable

these are some sh outputs

Result of the command: "sh crypto ikev1 sa"

IKEv1 SAs:

 Active SA: 1
 Rekey SA: 0 (A tunnel will report 1 Active and 1 Rekey SA during rekey)
Total IKE SA: 1

1 IKE Peer: 83.103.75.66
 Type : L2L Role : initiator 
 Rekey : no State : AM_ACTIVE 

Result of the command: "sh route"

Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
 D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area 
 N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
 E1 - OSPF external type 1, E2 - OSPF external type 2
 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
 ia - IS-IS inter area, * - candidate default, U - per-user static route
 o - ODR, P - periodic downloaded static route, + - replicated route
Gateway of last resort is 134.159.113.53 to network 0.0.0.0

S* 0.0.0.0 0.0.0.0 [1/0] via 134.159.113.53, outside
S 10.178.27.0 255.255.255.0 [1/0] via 134.159.113.53, outside
C 134.159.113.52 255.255.255.252 is directly connected, outside
L 134.159.113.54 255.255.255.255 is directly connected, outside
C 192.168.1.0 255.255.255.0 is directly connected, inside
L 192.168.1.1 255.255.255.255 is directly connected, inside

Result of the command: "sh crypto ipsec sa"

interface: outside
 Crypto map tag: outside_map, seq num: 1, local addr: 134.159.113.54

access-list outside_cryptomap extended permit ip 192.168.1.0 255.255.255.0 10.178.27.0 255.255.255.0 log debugging 
 local ident (addr/mask/prot/port): (192.168.1.0/255.255.255.0/0/0)
 remote ident (addr/mask/prot/port): (10.178.27.0/255.255.255.0/0/0)
 current_peer: 83.103.75.66

 #pkts encaps: 0, #pkts encrypt: 0, #pkts digest: 0
 #pkts decaps: 0, #pkts decrypt: 0, #pkts verify: 0
 #pkts compressed: 0, #pkts decompressed: 0
 #pkts not compressed: 0, #pkts comp failed: 0, #pkts decomp failed: 0
 #pre-frag successes: 0, #pre-frag failures: 0, #fragments created: 0
 #PMTUs sent: 0, #PMTUs rcvd: 0, #decapsulated frgs needing reassembly: 0
 #TFC rcvd: 0, #TFC sent: 0
 #Valid ICMP Errors rcvd: 0, #Invalid ICMP Errors rcvd: 0
 #send errors: 0, #recv errors: 0 

 local crypto endpt.: 134.159.113.54/0, remote crypto endpt.: 83.103.75.66/0
 path mtu 1500, ipsec overhead 58(36), media mtu 1500
 PMTU time remaining (sec): 0, DF policy: copy-df
 ICMP error validation: disabled, TFC packets: disabled
 current outbound spi: 650EE84E
 current inbound spi : 4220B8AB

inbound esp sas:
 spi: 0x4220B8AB (1109440683)
 transform: esp-3des esp-sha-hmac no compression 
 in use settings ={L2L, Tunnel, IKEv1, }
 slot: 0, conn_id: 2748416, crypto-map: outside_map
 sa timing: remaining key lifetime (kB/sec): (4374000/28530)
 IV size: 8 bytes
 replay detection support: N
 outbound esp sas:
 spi: 0x650EE84E (1695475790)
 transform: esp-3des esp-sha-hmac no compression 
 in use settings ={L2L, Tunnel, IKEv1, }
 slot: 0, conn_id: 2748416, crypto-map: outside_map
 sa timing: remaining key lifetime (kB/sec): (4374000/28530)
 IV size: 8 bytes
 replay detection support: N

Result of the command: "sh access-list"

access-list cached ACL log flows: total 0, denied 0 (deny-flow-max 4096)
 alert-interval 300
access-list outside_cryptomap; 1 elements; name hash: 0x39bea18f
access-list outside_cryptomap line 1 extended permit ip 192.168.1.0 255.255.255.0 object MilanDMZ log debugging interval 300 (hitcnt=534) 0xe1383887 
 access-list outside_cryptomap line 1 extended permit ip 192.168.1.0 255.255.255.0 10.178.27.0 255.255.255.0 log debugging interval 300 (hitcnt=534) 0xe1383887 
access-list outside_access_in; 0 elements; name hash: 0x6892a938
access-list inside_access_in; 1 elements; name hash: 0x433a1af1
access-list inside_access_in line 1 extended permit ip any any log disable (hitcnt=666147) 0xa925365e

Result of the command: "sh nat"

Manual NAT Policies (Section 1)
1 (inside) to (outside) source static NETWORK_OBJ_192.168.1.0_24 NETWORK_OBJ_192.168.1.0_24 destination static MilanDMZ2 MilanDMZ2 no-proxy-arp route-lookup
 translate_hits = 16740, untranslate_hits = 16740

Manual NAT Policies (Section 3)
1 (inside) to (outside) source dynamic any interface 
 translate_hits = 632582, untranslate_hits = 23213

I have to add that we created dozens of different VPNs using different hardware and software and this is the first time we are forced to ask for advice as we run out of options....

Any suggestion is more than welcome

Best

Federico 

[Gagandeep Kaur · Accepted solution]

Duplicate of https://supportforums.cisco.com/discussion/13337011/traffic-not-routed-vpn