Capture traffic by IPSEC tunnel

Hello world

Our Internet ASA is config to allow ipsec connections, ranging from the DMZ to the internet.

We have some suppliers and they need VPN access to their corporate network while working in our network to the DMZ.

As the tunnel IPSEC is all secure. IF the access of suppliers say some servers and they have private IP address into their network is possible that I can see in our open ASA links for them?

Concerning

MAhesh

If they introduce you servers remote access VPN connections in your DMZ, you would see only the traffic tcp/443 (SSL) (or possibly via protocol 50 IPsec if they use an IPsec VPN).

That's assuming that allow you all connections initiated from the DMZ to the outside. If you want to restrict them with an access list, then they would need to explicitly allow the connection.

Tags: Cisco Security

Similar Questions

Tunnel traffic inside IPSEC tunnel

Hello world

Site has a Site B through ASA IP Sec Tunnel.

Now turn on Site a GRE tunnel and the tunnel destination is happening inside the IPSEC tunnel.

In other words, IPSEC tunnel between 2 sites also leads the GRE Tunnel traffic.

Who's in charge, I can run on ASA whether IPSEC is transport traffic of the GRE tunnel or

Which line in config ASA will tell me that this IPSEC also conducts traffic GRE tunnel?

Thank you

MAhesh

Hello

I think that you will probably see GRE in the ASA connection table when the connection is in use.

You can try the command

Show conn | Volition Inc.

And see if this produceses matter what exit.

Can you possibly provide "interface Tunnelx" configurations and if its using other interfaces such as 'tunnel source' and 'destination tunnel' then their configurations also.

-Jouni

Send from FW traffic via IPSec tunnel

Hello

I have a FW in site B that needs to authenticate VPN users that connect to the FW in site B to an RSA RADIUS server to site A. So, this means that the FW would send traffic RADUIS via its peer interface to site A. At least that is how the RADIUS server in site A see traffic. The RADIUS server will see it as coming from au pair from right side of site B's IP address?

The public (peer) IP of the interface does not part of interesting traffic, and I wonder if it might bite me in the a$ $.

Does this make any sense?

Thank you!

Perhaps add it but make an exclusion of Protocol in the interesting traffic.

That is to say excluding isakmp and esp traffic.

I'm not sure if it will work, but its worth a try

Traffic is failed on plain IPSec tunnel between two 892 s

Have a weird case and you are looking for some suggestions/thougs where to dig because I have exhausted the options.

Note: I replaced the Networkid real to a mentined below.

Topology: a classic IPSec VPN tunnel between two 892 s of Cisco, with pre-shared key and no GRE. A 892 (branch_892) has access to the Internet using PPPoE and has three network / VLAN behind it. A VLAN is coordinated to the PPPoE internet access. Access to the other two VLAN - VL92 (100.100.200.0/24) and VL93 (100.100.100.0/24) is performed via the VPN tunnel.

Second 892 (892_DC) has just one interface - WAN on Gigabit enabled/connected and a static route to the default GW. It doesn't have any defined interal network. If the router is strictly used to send traffic to VL92/VL93 to the domestic 892 via IPSec tunnel.

Here's the problem: access to VL93 (100.100.100.0/24) works, however for VL92 (100.100.100.0/24) - does not work.

Devices in VL92 I ping IP address of 892_DC through the VPN tunnel. The 892_DC router I can ping devices in VL92. However, I can't VL92 ping any device beyond the 892_DC and at the same time the packets arriving on 892_DC for VL92 are not sent through the VPN tunnel.

I took the package trace on 892_DC using capture point/buffer to nathalie caron to VL92 packages and saw that the traffic coming to the 892_DC. I run the nathalie caron even on Branch_892, and there was not a single package.

So... What's the problem? More interesting, I modified the way left on VL92 access list and still - no packets are sent through the tunnel.

Any idea? Two routers config are below

-------

892_DC #show ru

!

crypto ISAKMP policy 10

BA aes 256

hash sha256

preshared authentication

Group 2

isakmp encryption key * address 1.2.3.4

ISAKMP crypto keepalive 10 periodicals

!

address of 1.2.3.4 crypto isakmp peers

Description of-COIL-892

!

!

Crypto ipsec transform-set IT-IPSec-Transform-Set esp - aes 256 sha256-esp-hmac

Crypto ipsec df - bit clear

!

map IT ipsec - IPSec crypto - Crypto - map 10-isakmp

defined peer 1.2.3.4

disable the kilobytes of life together - the security association

86400 seconds, life of security association set

the transform-set IT-IPSec-Transform-Set value

match a lists 101

market arriere-route

QoS before filing

!

interface GigabitEthernet0

IP 10,20,30,40 255.255.255.240

IP 1400 MTU

IP tcp adjust-mss 1360

automatic duplex

automatic speed

card crypto IT-IPSec-Crypto-map

!

IP route 0.0.0.0 0.0.0.0 10.20.30.41

!

access list 101 ip allow any 100.100.100.0 0.0.0.255 connect

access list 101 ip allow any 100.100.200.0 0.0.0.255 connect

-------------------------------------------------------------------------------------

Branch_892 #sh run

!

crypto ISAKMP policy 10

BA aes 256

hash sha256

preshared authentication

Group 2

isakmp encryption key * address 10,20,30,40

ISAKMP crypto keepalive 10 periodicals

!

address peer isakmp crypto 10,20,30,40

!

!

Crypto ipsec transform-set IT-IPSec-Transform-Set esp - aes 256 sha256-esp-hmac

Crypto ipsec df - bit clear

!

map IT ipsec - IPSec crypto - Crypto - map 10-isakmp

defined peer 10,20,30,40

disable the kilobytes of life together - the security association

86400 seconds, life of security association set

the transform-set IT-IPSec-Transform-Set value

match address 101

market arriere-route

QoS before filing

!

FastEthernet6 interface

Description VL92

switchport access vlan 92

!

interface FastEthernet7

Description VL93

switchport access vlan 93

!

interface GigabitEthernet0

Description # to WAN #.

no ip address

automatic duplex

automatic speed

PPPoE-client dial-pool-number 1

!

interface Vlan1

Description # local to #.

IP 192.168.1.254 255.255.255.0

IP nat inside

IP virtual-reassembly in

!

interface Vlan92

Description fa6-nexus e100/0/40

IP 100.100.200.1 255.255.255.0

!

interface Vlan93

Description fa7-nexus e100/0/38

IP 100.100.100.1 255.255.255.0

!

interface Dialer0

no ip address

No cdp enable

!

interface Dialer1

IP 1.2.3.4 255.255.255.248

IP mtu 1454

NAT outside IP

IP virtual-reassembly in max-pumping 256

encapsulation ppp

IP tcp adjust-mss 1414

Dialer pool 1

Dialer-Group 1

Authentication callin PPP chap Protocol

PPP chap hostname ~ ~ ~

PPP chap password =.

No cdp enable

card crypto IT-IPSec-Crypto-map

!

Dialer-list 1 ip protocol allow

!

access-list 101 permit ip 100.100.100.0 0.0.0.255 any

access-list 101 permit ip 100.100.200.0 0.0.0.255 any

!

IP route 0.0.0.0 0.0.0.0 Dialer1

Yes correct sounds - so another possible problem is the routing is routing 100% correct on both sides? Can you put the two sides config for review?

force the IPSec tunnel to stay in place even if no traffic

Hello

We had exactly the same problem, as already described here;

https://supportforums.Cisco.com/discussion/11666661/can-we-automatically...

We actually run ASA 9.1 and the remote peer is a Fortigate. There is a new feature that has been introduced since the post on the forum above or fact creating an sla is the only way to follow IPsec tunnel.

Concerning

Nothing new was built in the SAA to take account of this requirement.

I also had good results a script running on an internal host to send a "tcp" ping to a remote host, thus making sure traffic interesting was often enough to maintain the tunnel.

GRE over IPSec tunnel cannot pass traffic through it

I am trying to configure a GRE over IPSec tunnel between sites, we use the router cisco 7613 SUP720 (IOS: s72033-advipservicesk9_wan - mz.122 - 18.SXF15a.bin) and 3845 router (IOS:c3845 - advsecurityk9 - mz.124 - 25c.bin), we are facing problems when we use the tunnel because traffic is not passing through it. the configuration was working when we were using two routers cisco 3845 (IOS:c3845 - advsecurityk9 - mz.124 - 25c.bin), but for some reason, it doesn't work anymore when I paste the configuration on the new 7613 router.

Head office

crypto ISAKMP policy 10
BA aes
preshared authentication
Group 5
ISAKMP crypto key T3ST001 address 0.0.0.0 0.0.0.0
!
!
Crypto ipsec transform-set IPSec_PLC aes - esp esp-sha-hmac
transport mode
!
map PLC - CUM 10 ipsec-isakmp crypto
defined by peer 167.134.216.89
game of transformation-IPSec_PLC
match address 100
!
!
!
Tunnel1 interface
bandwidth 1984
IP 167.134.216.94 255.255.255.252
Mtu 1476 IP
load-interval 30
source of tunnel Serial0/1/0:0
tunnel destination 167.134.216.89

interface Serial0/1/0:0
IP 167.134.216.90 255.255.255.252
card crypto PLC - CUM

access-list 100 permit gre 167.134.216.90 host 167.134.216.8

Router eigrp 100
network 167.134.216.92 0.0.0.3

Directorate-General of the

crypto ISAKMP policy 10
BA aes
preshared authentication
Group 5
ISAKMP crypto key T3ST001 address 0.0.0.0 0.0.0.0
!
!
Crypto ipsec transform-set IPSec_PLC aes - esp esp-sha-hmac
transport mode
!
map PLC - CUM 10 ipsec-isakmp crypto
defined by peer 167.134.216.90
game of transformation-IPSec_PLC
match address 100

Tunnel1 interface
bandwidth 1984
IP 167.134.216.93 255.255.255.252
Mtu 1476 IP
load-interval 30
source of tunnel Serial1/0/0:1
tunnel destination 167.134.216.90

interface Serial1/0/0:1
bandwidth 1984
IP 167.134.216.89 255.255.255.252
IP access-group 101 in
load-interval 30
no fair queue
card crypto PLC - CUM

access-list 100 permit gre 167.134.216.89 host 167.134.216.90

ER-7600 #sh crypto isakmp his
conn-id State DST CBC slot
167.134.216.89 167.134.216.90 QM_IDLE 3 0

ER-3845 #sh crypto isakmp his
status of DST CBC State conn-id slot
167.134.216.89 167.134.216.90 QM_IDLE 3 0 ACTIVE

ER-3845 #sh active cryptographic engine connections

Algorithm of address State IP Interface ID encrypt decrypt
3 Serial0/1/0: 167.134.216.90 0 HMAC_SHA + AES_CBC 0 0 value
3001 Serial0/1/0: 167.134.216.90 0 set AES + SHA 0 0
3002 Serial0/1/0: 167.134.216.90 0 set AES + SHA 61 0

ER-7600 #sh active cryptographic engine connections

Algorithm of address State IP Interface ID encrypt decrypt
3 Serial1/0/0:1 167.134.216.89 set HMAC_SHA + AES_CBC 0 0
2000 Serial1/0/0:1 167.134.216.89 set HMAC_SHA + 0 66 AES_CBC
2001 Serial1/0/0:1 167.134.216.89 set HMAC_SHA + AES_CBC 0 0

I had this error on the er-3845: % CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd package not an IPSEC packet and this one on the IPSEC (epa_des_crypt) UH-7600: decrypted packet has no control of his identity

Please help, it's so frustrating...

Thanks in advance

Oscar

Here is a document from cisco, mentioning clearly for a card encryption on the two physical as tunnel interface well.

http://www.Cisco.com/en/us/Tech/tk583/TK372/technologies_configuration_example09186a008009438e.shtml

It may be useful

Manish

IPSec tunnel and NetFlow packets

I have a router 1841 IPSec running with an ASA. F0/0 is the source interface. I also set up NetFlow, which must be sent through the IPSec tunnel to the parser. The acl setting the IPSec interesting traffic covers addresses, source and destination of NetFlow. But NetFlow Traffic is not captured by the tunnel. When I ping the destination router, icmp traffic is picked up and goes through the tunnel. Are there ways to force NetFlow traffic to go to the tunnel?

Thank you.

Y at - it a route to the destination address of netflow? I have noted problems with traffic heading towards a destination that was not in the routing table is not made down a VPN.

ASA ASA from Site to Site VPN IPSec Tunnel

Any help would be greatly appreciated...

I have two devices Cisco ASA with a Site for the configuration of the tunnel VPN IPSec Site as follows: -.

Site #1 - Cisco ASA running version 8.2 (1) with an internal range of 10.0.0.x/24

Site #2 - Cisco ASA running version 8.2 (1) with an internal range of 10.1.1.x/24

Site #1 is simple and has a dynamic NAT rule which translates all of the inside and the outside (public IP) of the SAA.

Internet access works very well in all workstations of this site. A static route is configured to redirect all traffic to a public router upstream.

Site #2 is slightly more complicated; the Cisco ASA is configured with 10.1.1.254/24 as its interior IP address and 10.1.2.254/24 as its external IP address. A dynamic NAT rule is configured to translate everything inside as the 10.1.2.254 (outside) address of the ASA. A default static route is then configured to redirect all traffic to a Draytek device on 10.1.2.253. This device then performs its own private Public NAT. Again the Internet works fine all hosts inside the Cisco ASA (10.1.1.x)

The IPSec tunnel is created with the networks local and remote endpoint as above (10.0.0.x/24) and (10.1.1.x/24). The Draytek at the Site #2 device is configured with a form of DMZ that allows essentially ALL traffic toward the front directly on the external interface of the ASA (10.1.2.254). The Phase 1 and Phase 2 negotiation of the tunnel ends correctly, and the tunnel is formed without any problem. However, all traffic passing on networks ICMP does not end and the Syslog reports the following-

Site #1-

6 January 19, 2011 15:27:21 302020 ZEFF-SB-01_LAN 1 10.1.1.51 0 Built of outbound ICMP connection for faddr 10.1.1.51/0 gaddr ZEFF-SB-01_LAN/1 laddr ZEFF-SB-01_LAN/1

6 January 19, 2011 15:27:23 302021 10.1.1.51 0 ZEFF-SB-01_LAN 1 Connection of ICMP disassembly for faddr 10.1.1.51/0 gaddr ZEFF-SB-01_LAN/1 laddr ZEFF-SB-01_LAN/1

Site #2-

6 January 19, 2011 15:24:47 302020 10.1.1.51 0 10.0.0.30 1 Built of outbound ICMP connection for faddr gaddr laddr 10.1.1.51/0 10.1.1.51/0 10.0.0.30/1

6 January 19, 2011 15:24:49 302021 10.0.0.30 1 10.1.1.51 0 Connection of disassembly for faddr gaddr laddr 10.1.1.51/0 10.1.1.51/0 10.0.0.30/1 ICMP

It's the same for any form of traffic passing over the tunnel. The ACL is configured to allow segments of LAN out to any destination. At this point, I left scratching my head, as my original theory was to blame the Draytek, but after reading the documentation given to the DMZ host configuration, it appears this parameter is configured all traffic is simply forwarded to the IP address (in this case, the Cisco ASA interface outside).

Anyone can shed light on a possible cause of this problem?

Thank you

Nick

did you bypass the vpn traffic between 10.0.0 and 10.1.1 to be NAT - ed on the two ASA?

Please provide the following information

-set up the tunnel

-show the isa cry his

-show the ipsec cry his

-ping of the site 1 site 2 via tunnel

-capture "crypto ipsec to show his" once again

-ping from site 2 to 1 by the tunnel of the site

-capture "crypto ipsec to show his" once again

-two ASA configuration.

Strange problem in IPSec Tunnel - 8.4 NAT (2)

Helloo all,.

This must be the strangest question I've seen since the year last on my ASA.

I have an ASA 5540, who runs the code of 8.4 (2) without any problem until I ran into this problem last week and I spent sleepless nights with no resolution! Then, take a deep breath and here is a brief description of my setup and the problem:

A Simple IPSEC tunnel between my 8.4 (2) ASA 5540 and a Juniper SSG 140 6.3.0r9.0 (road OS based VPN) screen

The tunnel rises without any problem but the ASA refused to encrypt the traffic but it decrypts with GLORY!

Here are a few outputs debug, see the output and a package tracer output that also has an explanation of my problem of NAT WEIRD:

my setup - (I won't get into the details of encryption tunnel as my tunnel negotiations are perfect and returns from the outset when the ASA is configured as response only)

CISCO ASA - IPSec network details

LAN - 10.2.4.0/28

REMOTE NETWORK - 192.168.171.8/32

JUNIPER SSG 140 - IPSec networks details

ID OF THE PROXY:

LAN - 192.168.171.8/32

REMOTE NETWORK - 10.2.4.0/28

Name host # sh cry counterpart his ipsec

peer address:

Tag crypto map: outside_map, seq num: 5, local addr:

outside_cryptomap_4 to access extended list ip 10.2.4.0 allow 255.255.255.240 host 192.168.171.8

local ident (addr, mask, prot, port): (10.2.4.0/255.255.255.240/0/0)

Remote ident (addr, mask, prot, port): (192.168.171.8/255.255.255.255/0/0)

current_peer:

#pkts program: encrypt 0, #pkts: 0, #pkts digest: 0

#pkts decaps: 72, #pkts decrypt: 72, #pkts check: 72

compressed #pkts: 0, unzipped #pkts: 0

#pkts uncompressed: 0, comp #pkts failed: 0, #pkts Dang failed: 0

success #frag before: 0, failures before #frag: 0, #fragments created: 0

Sent #PMTUs: 0, #PMTUs rcvd: 0, reassembly: 20th century / of frgs #decapsulated: 0

#send errors: 0, #recv errors: 0

local crypto endpt. : 0, remote Start. crypto: 0

Path mtu 1500, fresh ipsec generals 58, media, mtu 1500

current outbound SPI: 5041C19F

current inbound SPI: 0EC13558

SAS of the esp on arrival:

SPI: 0x0EC13558 (247543128)

transform: esp-3des esp-sha-hmac no compression

running parameters = {L2L, Tunnel}

slot: 0, id_conn: 22040576, crypto-card: outside_map

calendar of his: service life remaining key (s): 3232

Size IV: 8 bytes

support for replay detection: Y

Anti-replay bitmap:

0xFFFFFFFF to 0xFFFFFFFF

outgoing esp sas:

SPI: 0x5041C19F (1346486687)

transform: esp-3des esp-sha-hmac no compression

running parameters = {L2L, Tunnel}

slot: 0, id_conn: 22040576, crypto-card: outside_map

calendar of his: service life remaining key (s): 3232

Size IV: 8 bytes

support for replay detection: Y

Anti-replay bitmap:

0x00000000 0x00000001

CONTEXTS for this IPSEC VPN tunnel:

# Sh asp table det vpn context host name

VPN CTX = 0x0742E6BC

By peer IP = 192.168.171.8

Pointer = 0x78C94BF8

State = upwards

Flags = BA + ESP

ITS = 0X9C28B633

SPI = 0x5041C19D

Group = 0

Pkts = 0

Pkts bad = 0

Incorrect SPI = 0

Parody = 0

Bad crypto = 0

Redial Pkt = 0

Call redial = 0

VPN = filter

VPN CTX = 0x07430D3C

By peer IP = 192.168.1.8

Pointer = 0x78F62018

State = upwards

Flags = DECR + ESP

ITS = 0X9C286E3D

SPI = 0x9B6910C5

Group = 1

Pkts = 297

Pkts bad = 0

Incorrect SPI = 0

Parody = 0

Bad crypto = 0

Redial Pkt = 0

Call redial = 0

VPN = filter

outside_cryptomap_4 to access extended list ip 10.2.4.0 allow 255.255.255.240 host 192.168.171.8

NAT (inside, outside) static source Ren - Ren - about destination static counterpart-host peer to route non-proxy-arp-search

network of the Ren - around object

subnet 10.2.4.0 255.255.255.240

network of the host object counterpart

Home 192.168.171.8

HS cry ipsec his

IKE Peer:

Type: L2L role: answering machine

Generate a new key: no State: MM_ACTIVE

output packet tracer extracted a packet transmitted by the network of 10.2.4.0/28 to 192.168.171.8 host

Phase: 7

Type: VPN

Subtype: encrypt

Result: ALLOW

Config:

Additional information:

Direct flow from returns search rule:

ID = 0x7789d788, priority = 70, domain = encrypt, deny = false

Hits = 2, user_data is0x742e6bc, cs_id = 0x7ba38680, reverse, flags = 0 x 0 = 0 protocol

IP/ID=10.2.4.0 SRC, mask is 255.255.255.240, port = 0

IP/ID=192.168.171.8 DST, mask is 255.255.255.255, port = 0, dscp = 0 x 0

input_ifc = none, output_ifc = external

VPN settings corresponding to the encrytpion + encapsulation and the hits here increment only when I run a test of tracer from my host on the remote peer inside package.

A tracer complete package out for a packet of the 10.2.4.1 255.255.255.255 network to host 192.168.171.8:

Phase: 1

Type: ACCESS-LIST

Subtype:

Result: ALLOW

Config:

Implicit rule

Additional information:

Direct flow from returns search rule:

ID = 0x77ebd1b0, priority = 1, domain = allowed, deny = false

hits = 3037156, user_data = 0 x 0, cs_id = 0 x 0, l3_type = 0 x 8

Mac SRC = 0000.0000.0000, mask is 0000.0000.0000

DST = 0000.0000.0000 Mac, mask is 0100.0000.0000

input_ifc = output_ifc = any to inside,

Phase: 2

Type:-ROUTE SEARCH

Subtype: entry

Result: ALLOW

Config:

Additional information:

in 192.168.171.0 255.255.255.0 outside

Phase: 3

Type: IP-OPTIONS

Subtype:

Result: ALLOW

Config:

Additional information:

Direct flow from returns search rule:

ID = 0x77ec1030, priority = 0, sector = inspect-ip-options, deny = true

hits = 212950, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

IP/ID=0.0.0.0 SRC, mask is 0.0.0.0, port = 0

IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, dscp = 0 x 0

input_ifc = output_ifc = any to inside,

Phase: 4

Type:

Subtype:

Result: ALLOW

Config:

Additional information:

Direct flow from returns search rule:

ID = 0x7c12cb18, priority = 18, area = import-export flows, deny = false

hits = 172188, user_data = 0x78b1f438, cs_id = 0 x 0, use_real_addr, flags = 0 x 0,

IP/ID=0.0.0.0 SRC, mask is 0.0.0.0, port = 0

IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, dscp = 0 x 0

input_ifc = output_ifc = any to inside,

Phase: 5

Type: NAT

Subtype:

Result: ALLOW

Config:

NAT (inside, outside) static source Ren - Ren - about destination static counterpart-host peer to route non-proxy-arp-search

Additional information:

Definition of static 10.2.4.1/2700 to 10.2.4.1/2700

Direct flow from returns search rule:

ID = 0x77e0a878, priority = 6, area = nat, deny = false

hits = 9, user_data is 0x7b7360a8, cs_id = 0 x 0, use_real_addr, flags = 0 x 0, proto

IP/ID=10.2.4.1 SRC, mask is 255.255.255.240, port = 0

IP/ID=192.168.171.8 DST, mask is 255.255.255.255, port = 0, dscp = 0 x 0

input_ifc = inside, outside = output_ifc

(it's the weird NAT problem I see. I see the number of hits is increment only when I run the packet tracer understands even I have pings (traffic) the 192.168.171.8 constant welcomes the 10.2.4.1/28)-s'il please see the package I pasted after the capture section)

Phase: 6

Type: VPN

Subtype: encrypt

Result: ALLOW

Config:

Additional information:

Direct flow from returns search rule:

ID = 0x7b8751f8, priority = 70, domain = encrypt, deny = false

hits = 3, user_data = 0x7432b74, cs_id = 0x7ba38680, reverse, flags = 0 x 0, proto

IP/ID=10.2.4.1 SRC, mask is 255.255.255.240, port = 0

IP/ID=192.168.171.8 DST, mask is 255.255.255.255, port = 0, dscp = 0 x 0

input_ifc = none, output_ifc = external

Phase: 7

Type: VPN

Subtype: ipsec-tunnel-flow

Result: ALLOW

Config:

Additional information:

Reverse flow from returns search rule:

ID = 0x78b0c280, priority = 69 = ipsec-tunnel-flow area, deny = false

hits = 154, user_data is 0x7435f94, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

IP/ID=192.168.171.8 SRC, mask is 255.255.255.255, port = 0

IP/ID=10.2.4.1 DST, mask is 255.255.255.240, port = 0, dscp = 0 x 0

input_ifc = out, output_ifc = any

Phase: 8

Type: IP-OPTIONS

Subtype:

Result: ALLOW

Config:

Additional information:

Reverse flow from returns search rule:

ID = 0x77e7a510, priority = 0, sector = inspect-ip-options, deny = true

hits = 184556, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol

IP/ID=0.0.0.0 SRC, mask is 0.0.0.0, port = 0

IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, dscp = 0 x 0

input_ifc = out, output_ifc = any

Phase: 9

Type: CREATING STREAMS

Subtype:

Result: ALLOW

Config:

Additional information:

New workflow created with the 119880921 id, package sent to the next module

Information module for forward flow...

snp_fp_tracer_drop

snp_fp_inspect_ip_options

snp_fp_tcp_normalizer

snp_fp_translate

snp_fp_adjacency

snp_fp_encrypt

snp_fp_fragment

snp_ifc_stat

Information for reverse flow...

snp_fp_tracer_drop

snp_fp_inspect_ip_options

snp_fp_ipsec_tunnel_flow

snp_fp_translate

snp_fp_tcp_normalizer

snp_fp_adjacency

snp_fp_fragment

snp_ifc_stat

Result:

input interface: inside

entry status: to the top

entry-line-status: to the top

output interface: outside

the status of the output: to the top

output-line-status: to the top

Action: allow

Hostname # sh Cap A1

8 packets captured

1: 12:26:53.376033 192.168.10.252 > 10.2.4.1: icmp: echo request

2: 12:26:53.376597 10.2.4.1 > 192.168.10.252: icmp: echo reply

3: 12:26:56.487905 192.168.171.8 > 10.2.4.1: icmp: echo request

4: 12:27:01.489217 192.168.171.8 > 10.2.4.1: icmp: echo request

5: 12:27:03.378245 192.168.10.252 > 10.2.4.1: icmp: echo request

6: 12:27:03.378825 10.2.4.1 > 192.168.10.252: icmp: echo reply

7: 12:27:06.491597 192.168.171.8 > 10.2.4.1: icmp: echo request

8: 12:27:11.491856 192.168.171.8 > 10.2.4.1: icmp: echo request

8 packets shown

As you can see, there is no echo response packet at all because the package may not be wrapped while he was sent to.

I'm Karen with it. In addition, he is a firewall multi-tenant live production with no problems at all outside this for a Juniper ipsec tunnel!

Also, the 192.168.10.0/24 is another remote network of IPSec tunnel to this network of 10.2.4.0/28 and this IPSEC tunnel has a similar Juniper SSG 140 screen os 6.3.0r9.0 at the remote end and this woks like a charm with no problems, but the 171 is not be encrypted by the ASA at all.

If someone could help me, that would be greatt and greatly appreciated!

Thanks heaps. !

Perfect! Now you must find something else inside for tomorrow--> forecast rain again

Please kindly marks the message as answered while others may learn from it. Thank you.

WRVS4400N will not route all traffic on IPsec

All my remote sites use various routers to route all their traffic via IPsec. However, I have a WRVS4400N w/firmware configured 2.0.2.1 with a tunnel of work. My problem is that I need to define the Group of remote 0.0.0.0 0.0.0.0 so all traffic is forced through the IPsec tunnel and not on the local gateway. When I make the mistake, Remote Security Group and Local security group cannot be in the same network. However, it works with Cisco/Linksys RV042.

Any ideas? Attached are the screenshots of each.

Transmission of wildcard ESP isn't a feature support, therefore not documented in the product documentation. If you need a wifi router that supports this feature, you can see the series Cisco ISR, which is base IOS.

IPSec Tunnel between Cisco 2801 and Netscren 50 with NAT and static

Hello

My problem isn't really the IPSec connection between two devices (it is already done...) But my problem is that I have a mail server on the site of Cisco, who have a static NAT from inside to outside. Due to the static NAT, I do not see the server in the VPN tunnel. I found a document that almost describes the problem:

"Configuration of a router IPSEC Tunnel private-to-private network with NAT and static" (Document ID 14144)

NAT takes place before the encryption verification!

In this document, the solution is 'routing policy' using the loopback interface. But, how can I handle this with the Netscreen firewall. Someone has an idea?

Thanks for any help

Best regards

Heiko

Hello

Try to change your static NAT with static NAT based policy.

That is to say the static NAT should not be applicable for VPN traffic

permissible static route map 1

corresponds to the IP 104

access-list 104 refuse host ip 10.1.110.10 10.1.0.0 255.255.0.0

access-list 104 allow the host ip 10.1.110.10 all

IP nat inside source static 10.1.110.10 81.222.33.90 map of static route

HTH

Kind regards

GE.

IPSEC tunnels does not connect

Out of sudden IPSEC tunnel on remote site 202.68.211.20 is not plug in. Previously is OK. There is no change in config.

IKE Phase 1 even not connect.

I'm debugging, but I don't know what could be the error.

-----------------------------------------------------------------------------

= ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = PuTTY connect 2016.05.12 15:19:36 = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ = ~ =.
12 May 12:06:50 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:06:50 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:06:53 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:06:53 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:06:54 [IKEv1 DEBUG]: IP = 202.68.211.20, case of mistaken IKE MM Initiator WSF (struct & 0xd84aff40) , : MM_DONE, EV_ERROR--> MM_WAIT_MSG2, EV_RETRY--> MM_WAIT_MSG2, EV_TIMEOUT--> MM_WAIT_MSG2 NullEvent--> MM_SND_MSG1, EV_SND_MSG--> MM_SND_MSG1, EV_START_TMR--> MM_SND_MSG1, EV_RESEND_MSG--> MM_WAIT_MSG2, EV_RETRY
12 May 12:06:54 [IKEv1 DEBUG]: IP = 202.68.211.20, IKE SA MM:914f04ce ending: flags 0 x 01000022, refcnt 0, tuncnt 0
12 May 12:06:54 [IKEv1 DEBUG]: IP = 202.68.211.20, sending clear/delete with the message of reason
12 May 12:06:59 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:06:59 [IKEv1]: IP = 202.68.211.20, initiator of IKE: New Phase 1, Intf internal, IKE Peer 202.68.211.20 address proxy local 10.215.20.0 address remote Proxy 10.210.0.0, Card Crypto (VPN_map)
12 May 12:06:59 [IKEv1 DEBUG]: IP = 202.68.211.20, build the payloads of ISAKMP security
12 May 12:06:59 [IKEv1 DEBUG]: IP = 202.68.211.20, construction of Fragmentation VID + load useful functionality
12 May 12:06:59 [IKEv1]: IP = 202.68.211.20, IKE_DECODE SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
12 May 12:07 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:07 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:07:03 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:07:03 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:07:07 [IKEv1]: IP = 202.68.211.20, IKE_DECODE new SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
12 May 12:07:09 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:07:09 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:07:15 [IKEv1]: IP = 202.68.211.20, IKE_DECODE new SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
12 May 12:07:23 [IKEv1]: IP = 202.68.211.20, IKE_DECODE new SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
12 May 12:07:31 [IKEv1 DEBUG]: IP = 202.68.211.20, case of mistaken IKE MM Initiator WSF (struct & 0xd8457958) , : MM_DONE, EV_ERROR--> MM_WAIT_MSG2, EV_RETRY--> MM_WAIT_MSG2, EV_TIMEOUT--> MM_WAIT_MSG2 NullEvent--> MM_SND_MSG1, EV_SND_MSG--> MM_SND_MSG1, EV_START_TMR--> MM_SND_MSG1, EV_RESEND_MSG--> MM_WAIT_MSG2, EV_RETRY
12 May 12:07:31 [IKEv1 DEBUG]: IP = 202.68.211.20, IKE SA MM:be63ea64 ending: flags 0 x 01000022, refcnt 0, tuncnt 0
12 May 12:07:31 [IKEv1 DEBUG]: IP = 202.68.211.20, sending clear/delete with the message of reason
12 May 12:07:37 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:07:37 [IKEv1]: IP = 202.68.211.20, initiator of IKE: New Phase 1, Intf internal, IKE Peer 202.68.211.20 address proxy local 10.215.20.0 address remote Proxy 10.210.0.0, Card Crypto (VPN_map)
12 May 12:07:37 [IKEv1 DEBUG]: IP = 202.68.211.20, build the payloads of ISAKMP security
12 May 12:07:37 [IKEv1 DEBUG]: IP = 202.68.211.20, construction of Fragmentation VID + load useful functionality
12 May 12:07:37 [IKEv1]: IP = 202.68.211.20, IKE_DECODE SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
12 May 12:07:40 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:07:40 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:07:45 [IKEv1]: IP = 202.68.211.20, IKE_DECODE new SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
12 May 12:07:46 [IKEv1 DEBUG]: pitcher: a message key acquisition, spi 0 x 0
12 May 12:07:46 [IKEv1]: IP = 202.68.211.20, Queuing KEY-ACQUIRE messages are treated when SA P1 is finished.
12 May 12:07:53 [IKEv1]: IP = 202.68.211.20, IKE_DECODE new SEND Message (msgid = 0) with payloads: HDR + HER (1), SELLER (13) + (0) NONE total length: 112
q

Hello

It seems that the tunnel is blocked to MSG_2.

You can check if the UDP 500 traffic is not blocked between peers?

Please check with your provider.

Kind regards

Aditya

Please evaluate the useful messages and mark the correct answers.

DROP in flow of the IPSec tunnel

Hello

I am trying to use a VPN, who worked on one connection ASA months on ASA9.1 (2). I've updated to ASA9.1 11 (6) and it has stopped working.

This is the remote ASA5505s making an IPSEC connection-a network head 5520. I can ride preceding and following 2 and 11 9.1 9.1 (6) and while the configuration does not change, the VPN starts working on 9.1 2

Vpn connects, but there is no packets sent or received...

I get this packet tracer...

Output of the command: "packet - trace entry tcp teeessyou 192.168.190.2 5000 192.168.195.1 detail 80.

Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit rule
Additional information:
Direct flow from returns search rule:
ID = 0xae1308e8, priority = 1, domain = allowed, deny = false
hits = 622, user_data = 0 x 0, cs_id = 0 x 0, l3_type = 0 x 8
Mac SRC = 0000.0000.0000, mask is 0000.0000.0000
DST = 0000.0000.0000 Mac, mask is 0100.0000.0000
input_ifc = teeessyou, output_ifc = any

Phase: 2
Type: UN - NAT
Subtype: static
Result: ALLOW
Config:
NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
Additional information:
NAT divert on exit to the outside interface
Untranslate 192.168.195.1/80 to 192.168.195.1/80

Phase: 3
Type: ACCESS-LIST
Subtype: Journal
Result: ALLOW
Config:
Access-group teeessyou_access_in in the teeessyou interface
teeessyou_access_in of access allowed any ip an extended list
Additional information:
Direct flow from returns search rule:
ID = 0xae24d310, priority = 13, area = allowed, deny = false
hits = 622, user_data is 0xab6b23c0, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = any

Phase: 4
Type: NAT
Subtype:
Result: ALLOW
Config:
NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
Additional information:
Definition of static 192.168.190.2/5000 to 192.168.190.2/5000
Direct flow from returns search rule:
ID = 0xae1ea5a8, priority = 6, area = nat, deny = false
hits = 622, user_data is 0xae1e9c58, cs_id = 0 x 0, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=192.168.192.0 DST, mask is 255.255.224.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = external

Phase: 5
Type: NAT
Subtype: volatile
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0xa9678858, priority = 1, domain = nat-volatile, deny = true
hits = 105, user_data = 0 x 0, cs_id = 0 x 0, reverse, use_real_addr, flags = 0 x 0, Protocol = 6
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = none, output_ifc = any

Phase: 6
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0xae136910, priority = 0, sector = inspect-ip-options, deny = true
hits = 622, user_data = 0 x 0, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=0.0.0.0 DST, mask is 0.0.0.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = any

Phase: 7
Type: VPN
Subtype: encrypt
Result: ALLOW
Config:
Additional information:
Direct flow from returns search rule:
ID = 0xaeec4328, priority = 70, domain = encrypt, deny = false
hits = 65, user_data is 0xb7dc, cs_id = 0 x 0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=192.168.195.0 DST, mask is 255.255.255.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = none, output_ifc = external

Phase: 8
Type: NAT
Subtype: rpf check
Result: ALLOW
Config:
NAT (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS
Additional information:
Direct flow from returns search rule:
ID = 0xae1eae48, priority = 6, area = nat-reversed, deny = false
hits = 129, user_data is 0xae1e9d10, cs_id = 0 x 0, use_real_addr, flags = 0 x 0 = 0 protocol
IP/ID=0.0.0.0 SRC, mask = 0.0.0.0, port = 0, = 0 tag
IP/ID=192.168.192.0 DST, mask is 255.255.224.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = teeessyou, output_ifc = external

Phase: 9
Type: VPN
Subtype: ipsec-tunnel-flow
Result: DECLINE
Config:
Additional information:
Reverse flow from returns search rule:
ID = 0xaea9f6b0, priority = 69 = ipsec-tunnel-flow area, deny = false
hits = 129, user_data = 0 x 0, cs_id = 0xaea999c0, reverse, flags = 0 x 0 = 0 protocol
IP/ID=192.168.192.0 SRC, mask = 255.255.224.0, port = 0, = 0 tag
IP/ID=192.168.190.0 DST, mask is 255.255.255.0, port = 0, tag = 0, dscp = 0 x 0
input_ifc = out, output_ifc = any

Hello Spencerallsop,

I recommend to add the keyword "no-proxy-arp" the end of the NAT statement, so the ASA try to answer queries ARP for the traffic(VPN interesting traffic), also this last phase 9 usually shows ignored due to a filter VPN defined in sometimes group policy, make sure you have not a filter VPN in a group policy that affect this tunnel then you will need to do the following:

1. remove the NAT statement:

-no nat (teeessyou, outside) static source all all static destination teeessyou_ENCODERS teeessyou_ENCODERS

2 fix the NAT statement with the keyword "No.-proxy-arp" :

-nat (teeessyou, outside) static source any any destination static teeessyou_ENCODERS teeessyou_ENCODERS non-proxy-arp

3 disable the VPN ISA SA:

-claire crypto ikev1 his

4. run the packet tracer to check that the L2L has developed,

To be honest I wouldn't recommend move you to 9.1.7 since it has some problems with the ARP entries, and it affects AnyConnect SSL somehow, which is still under investigation.

In fact, this bug affects 9.1.7 (may affect your environment):

- https://bst.cloudapps.cisco.com/bugsearch/bug/CSCuy28710

Please don't forget to rate and score as of this post, keep me posted!

Kind regards

David Castro,

RV180 dhcp via IPSEC Tunnel

Hello

I have set up an ipsec tunnel between rv180 (site A) and asa5520 (site B) successful. The dhcp server to clients is on the B site. The dhcp clients request going through the tunnel, they leave the rv180 on the wan interface and arrive at site B with the wan-ipaddress from site A. The configured dhcp-relay on the website match the remote network (site B), configured in the on site A ipsec tunnel. Is there anyway that all traffic pass through the ipsec tunnel? We want it for security reasons.

Any help is greatly appreciated.

Ralf

Dear Ralf,

Thank you to reach small business support community.

Unfortunately the relay DHCP Relay not of DHCP request to the IPSec VPN tunnel. I hope that this answer to your question and do not hesitate to contact me if there is any additional help with what I can help you.

Kind regards

Jeffrey Rodriguez S... : | :. : | :.
Support Engineer Cisco client

* Please rate the Post so other will know when an answer has been found.

Outgoing PAT to the IPSec Tunnel

Hello

Situation is with range of IP private tunnel of 3rd party who already uses the same private beach, but not with any of the hosts that we need to connect to. All traffic from the office to the 3rd party must be secure.

We want to configure an IPSec tunnel between the two sites (easy) and then use PAT on the PIX Office (6.3 (5)) to make all traffic office appear to be a single private address different.

We tried to do with PDM, but it insists on having no NAT (with an exclusionary rule), or static NAT, but does not seem to allow Pat.

I have attached a copy sanitized the office configuration. Any standard room in PIX have been removed for brevity

I would like constructive guidance on where I'm wrong.

See you soon

Hello

The PIX / ASA will make the NAT translation on the steps below. First, it will check if no no (order No. - nat) nat is configured, then it will check the static nat translation and finally, it will check the translation PAT.

In your configuration, there is a NAT (0) command indicating not to translate any IP of 192.168.0.0 to the remote ip address range, then the PIX won't do the translation and the package is passed to the destination.

Remove the NAT (0) command and edit list access outside_cryptomap_10 with the ip dried up to the remote ip address for this access list is responsible for interesting traffic that needs to be encrypted.

pls control and dream of return.

Capture traffic by IPSEC tunnel

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