Here's a config of the remote

tolinrome tolinrome · ‎06-05-2014

I have an ipsec vpn and it is up and running. On the remote asa I have the on the acl for the crytomap the inside network and destination the remote private network. I have also created a service policy rule where web traffic will not go to this tunnel but straight to the internet. I still find though that all traffic is going through the tunnel. How can I start resolving this? Thanks.

Marvin Rhoads · ‎06-05-2014

Most likely your ACL used by the cryptomap is incorrect. If the traffic is deemed "interesting" by the ACL, it will be encapsulated in IPsec and the service-policy will never see it. (Step 4 vs Step 6 of packet processing - reference)

Can you share the configuration of the problematic ASA?

Or at least run a packet-tracer and let's look at the output of how the ASA handles the flow and why:

packet-tracer input inside tcp <inside client address> 1025 8.8.8.8 80 detailed

tolinrome tolinrome · ‎06-05-2014

Here's a config of the remote 5505, thanks.

: Saved
:
ASA Version 9.1(4)
!
hostname
names
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
description Access Point
!
interface Ethernet0/7
!
interface Vlan1
nameif inside
security-level 100
ip address 10.25.40.200 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 50.50.50.35 255.255.255.0
boot system disk0:/asa914-k8.bin
ftp mode passive
dns server-group DefaultDNS
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
object network NETWORK_OBJ_10.25.40.0_24
subnet 10.25.40.0 255.255.255.0
object network 10.0.0.0
subnet 10.0.0.0 255.0.0.0
object network 10.1.0.0
subnet 10.1.0.0 255.255.0.0
object-group service DM_INLINE_TCP_1 tcp
port-object eq www
port-object eq https
access-list inside_nat0_outbound extended permit ip 10.25.40.0 255.255.255.0 any
access-list http-traffic extended permit tcp any any eq www inactive
access-list outside_cryptomap extended permit ip 10.25.40.0 255.255.255.0 object 10.1.0.0
access-list outside_cryptomap extended permit ip host 50.50.50.35 host 10.1.0.120
access-list outside_cryptomap extended permit ip host 10.25.40.200 host 10.1.0.120
access-list https-traffic extended permit tcp any any eq https inactive
access-list inside_access_in_1 extended permit tcp 10.25.40.0 255.255.255.0 any object-group DM_INLINE_TCP_1
access-list inside_access_in_1 extended permit ip any any
access-list global_mpc_1 extended deny tcp any object 10.1.0.0 eq https
access-list global_mpc_1 extended permit tcp any any eq https
access-list global_mpc extended deny tcp any object 10.1.0.0 eq www
access-list global_mpc extended permit tcp any any eq www
!
scansafe general-options
server primary fqdn 69.174.87.51 port 8080
server backup fqdn 70.39.231.99 port 8080
retry-count 5
license encrypted
!
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-721.bin
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
access-group inside_access_in_1 in interface inside
route outside 0.0.0.0 0.0.0.0 206.192.38.3 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
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
http server enable
http 10.1.0.0 255.255.255.0 inside
http 10.1.11.0 255.255.255.0 inside
http 10.25.40.0 255.255.255.0 inside
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 AES256
protocol esp encryption aes-256
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 AES
protocol esp encryption aes
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 DES
protocol esp encryption des
protocol esp integrity sha-1 md5
crypto ipsec security-association pmtu-aging infinite
crypto map outside_map 1 match address outside_cryptomap
crypto map outside_map 1 set peer 50.50.50.250
crypto map outside_map 1 set ikev1 transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map 1 set ikev2 ipsec-proposal AES256 AES192 AES 3DES DES
crypto map outside_map interface outside
crypto ca trustpool policy
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 ikev1 enable outside
crypto ikev1 policy 10
authentication pre-share
encryption aes-256
hash sha
group 2
lifetime 86400
crypto ikev1 policy 65535
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 86400
telnet timeout 5
ssh 10.0.0.0 255.0.0.0 inside
ssh 0.0.0.0 0.0.0.0 outside
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0
management-access inside
vpnclient server 50.50.50.250
vpnclient mode network-extension-mode
vpnclient nem-st-autoconnect
vpnclient vpngroup L2L password
vpnclient username L2LVPN password
dhcpd auto_config outside
!
dhcprelay server 10.1.0.120 outside
dhcprelay enable inside
dhcprelay setroute inside
dhcprelay timeout 60
threat-detection basic-threat
threat-detection statistics
threat-detection statistics tcp-intercept rate-interval 30 burst-rate 400 average-rate 200
tftp-server inside 10.1.0.200 ASA5505_run.txt
group-policy DfltGrpPolicy attributes
vpn-tunnel-protocol ikev1 ikev2 ssl-clientless
username L2LVPN password
tunnel-group 50.50.50.250type ipsec-l2l
tunnel-group 50.50.50.250ipsec-attributes
ikev1 pre-shared-key
ikev2 remote-authentication pre-shared-key
ikev2 local-authentication pre-shared-key
!
class-map cws-http-class
match access-list global_mpc
class-map http-class
match access-list http-traffic
class-map cws-https-class
match access-list global_mpc_1
class-map https-class
match access-list https-traffic
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map type inspect scansafe https-pmap
parameters
default group httpstraffic
https
policy-map type inspect scansafe cws_https-pmap
parameters
default group httpstraffic
https
policy-map type inspect scansafe cws_http_pmap
parameters
default group httptraffic
http
policy-map global_policy
description cws-http-class
class cws-https-class
inspect scansafe cws_https-pmap fail-close
class cws-http-class
inspect scansafe cws_http_pmap fail-close
class inspection_default
inspect esmtp
inspect ftp
inspect h323 h225
inspect h323 ras
inspect icmp
inspect ip-options
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect sqlnet
inspect sunrpc
inspect tftp
inspect xdmcp
policy-map type inspect scansafe http-pmap
parameters
default group httptraffic
http
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email callhome@cisco.com
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
: end
asdm image disk0:/asdm-721.bin
no asdm history enable

Marvin Rhoads · ‎06-05-2014

That looks more or less OK.

How about the packet-tracer output?

packet-tracer input inside tcp <inside client address from 10.25.40.0 subnet> 1025 8.8.8.8 80 detailed

tolinrome tolinrome · ‎06-06-2014

packet tracer shows it going through the vpn. Maybe something on the other end of the asa?

Marius Gunnerud · ‎06-06-2014

How are you monitoring the traffic and identifying it is going over the VPN and not out to the internet?

Could you set up a packet capture on the inside interface and outside interface. In ASDM go to Wizards > Packet Capture.

If traffic is really going over the VPN when it is not supposed to you should not see any traffic in the packet capture on the outside interface.

--

Please remember to select a correct answer and rate helpful posts

--
Please remember to select a correct answer and rate helpful posts

tolinrome tolinrome · ‎06-06-2014

Here's the output of the packet tracer:

ASA5505(config)# packet-tracer input inside tcp 10.25.40.101 1025 8.8.8.8$

Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd91cd538, priority=1, domain=permit, deny=false
hits=1489754, user_data=0x0, cs_id=0x0, l3_type=0x8
src mac=0000.0000.0000, mask=0000.0000.0000
dst mac=0000.0000.0000, mask=0100.0000.0000
input_ifc=inside, output_ifc=any

Phase: 2
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 0.0.0.0 0.0.0.0 outside

Phase: 3
Type: ACCESS-LIST
Subtype: log
Result: ALLOW
Config:
access-group inside_access_in_1 in interface inside
access-list inside_access_in_1 extended permit tcp 10.25.40.0 255.255.255.0 any object-group DM_INLINE_TCP_1
object-group service DM_INLINE_TCP_1 tcp
port-object eq www
port-object eq https
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd983dfe8, priority=13, domain=permit, deny=false
hits=9517, user_data=0xd745b390, cs_id=0x0, use_real_addr, flags=0x0, protocol=6
src ip/id=10.25.40.0, mask=255.255.255.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=80, tag=0, dscp=0x0
input_ifc=inside, output_ifc=any

Phase: 4
Type: NAT
Subtype: per-session
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd9228e20, priority=1, domain=nat-per-session, deny=true
hits=161371, user_data=0x0, cs_id=0x0, reverse, use_real_addr, flags=0x0, protocol=6
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0, dscp=0x0
input_ifc=any, output_ifc=any

Phase: 5
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd91d2fc8, priority=0, domain=inspect-ip-options, deny=true
hits=91023, user_data=0x0, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0, dscp=0x0
input_ifc=inside, output_ifc=any

Phase: 6
Type: INSPECT
Subtype: np-inspect
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd9766cd0, priority=70, domain=inspect-scansafe, deny=false
hits=2134, user_data=0xd981e618, cs_id=0x0, use_real_addr, flags=0x0, protocol=6
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=80, tag=0, dscp=0x0
input_ifc=inside, output_ifc=any

Phase: 7
Type: HOST-LIMIT
Subtype:
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
in id=0xd9201248, priority=0, domain=host-limit, deny=false
hits=86435, user_data=0x0, cs_id=0x0, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0, dscp=0x0
input_ifc=inside, output_ifc=any

Phase: 8
Type: VPN
Subtype: encrypt
Result: ALLOW
Config:
Additional Information:
Forward Flow based lookup yields rule:
out id=0xd97e9b90, priority=70, domain=encrypt, deny=false
hits=448, user_data=0x31eadc, cs_id=0xd984d768, reverse, flags=0x0, protocol=0
src ip/id=10.25.40.0, mask=255.255.255.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0, dscp=0x0
input_ifc=any, output_ifc=outside

Phase: 9
Type: VPN
Subtype: ipsec-tunnel-flow
Result: ALLOW
Config:
Additional Information:
Reverse Flow based lookup yields rule:
in id=0xd9805520, priority=70, domain=ipsec-tunnel-flow, deny=false
hits=448, user_data=0x320edc, cs_id=0xd984d768, reverse, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=10.25.40.0, mask=255.255.255.0, port=0, tag=0, dscp=0x0
input_ifc=outside, output_ifc=any

Phase: 10
Type: NAT
Subtype: per-session
Result: ALLOW
Config:
Additional Information:
Reverse Flow based lookup yields rule:
in id=0xd9228e20, priority=1, domain=nat-per-session, deny=true
hits=161373, user_data=0x0, cs_id=0x0, reverse, use_real_addr, flags=0x0, protocol=6
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0, dscp=0x0
input_ifc=any, output_ifc=any

Phase: 11
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:
Reverse Flow based lookup yields rule:
in id=0xd91fcc70, priority=0, domain=inspect-ip-options, deny=true
hits=177513, user_data=0x0, cs_id=0x0, reverse, flags=0x0, protocol=0
src ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0
dst ip/id=0.0.0.0, mask=0.0.0.0, port=0, tag=0, dscp=0x0
input_ifc=outside, output_ifc=any

Phase: 12
Type: FLOW-CREATION
Subtype:
Result: ALLOW
Config:
Additional Information:
New flow created with id 135803, packet dispatched to next module
Module information for forward flow ...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_tcp_normalizer
snp_fp_inline_tcp_mod
snp_fp_translate
snp_fp_tcp_normalizer
snp_fp_adjacency
snp_fp_encrypt
snp_fp_fragment
snp_ifc_stat

Module information for reverse flow ...
snp_fp_tracer_drop
snp_fp_inspect_ip_options
snp_fp_ipsec_tunnel_flow
snp_fp_tcp_normalizer
snp_fp_translate
snp_fp_inline_tcp_mod
snp_fp_tcp_normalizer
snp_fp_adjacency
snp_fp_fragment
snp_ifc_stat

Result:
input-interface: inside
input-status: up
input-line-status: up
output-interface: outside
output-status: up
output-line-status: up
Action: allow

ASA5505(config)#

Marius Gunnerud · ‎06-07-2014

Did you have a different ACL configured for the crypto map previously?

It is odd that it is not matching on the configured ACL. If you look in the ASDM does the ACL match that which you see in the CLI?

Have you tried removing the command crypto map outside_map 1 match address outside_cryptomap and then re adding it again?

--

Please remember to select a correct answer and rate helpful posts

--
Please remember to select a correct answer and rate helpful posts

MANI .P · ‎06-09-2014

@warrenroseny : One more option is available . install the wireshark capture the packet meanwhile open the browser ... easy way to identify !!!

ipsec vpn - not splitting traffic