Transparent Tunneling status

Similar Questions

• Activate the Transparent Tunneling on the VPN client?

  Hi, I can connect my Cisco using my Cisco VPN Client hub if I turn off the transparent tunnel option or turn it on by using either IPsec over UDP or IPsec over TCP, one of these 3 options provide the best security or speed, or am I OK just to use the default value for my users that is active transparent and IPsec via UDP?

  Thank you

  IPsec over udp is fine. If you disable it, you'd probably find people difficult to establish communications behind nat devices. I do not think it is safer than the other, but I think udp is faster than tcp.

• VPNS allow Transparent Tunneling

  Hello

  Im trying to connect to my work vpn using cisco vpn client. I found interesting this problem because I have recently finished my beginners CCENT exam in cisco and enter this world.

  Anyway, here's what I know:

  (1) when trying to connect to work it says "contact the security gateway x.x.x.x" and never ask me my user name and password.

  (2) go to the coffee shop in the street, it works very well on their wireless. So I know this isn't a setting on my computer (believe me, this isn't a firewall setting for a specific network area DRH).

  (3) when I tried the 'broken' network VPN and had no "Active Tunneling Transparent" active, it asks me my username and password and it shows its connected with the lock at the bottom of the start menu. However, I can't ping or anything on the remote network.

  (4) the TCP tunnel at the 10 000 port is blocked with my work.

  (5) IP SEC over UDP does not have human resources

  (6) I am a network of schools and I think they have blocked something, I don't know, but I'm guessing's UDP...

  Any possible workaround for this?

  Thank you guys!

  (1) when trying to connect to work it says "contact the security gateway x.x.x.x" and never ask me my user name and password.

  kdalf,

  It is possible and very common that some organizations do not allow for vpn ipsec ports or it Ipsec is allowed on a basis by user, this is just a possibility. Another possibility may be they do not IPsec vpn on their VLAN wireless, no more, or what you need to do is to contact the administrators of the net and ask them to ensure that the IPsec vpn ports are indeed allow or not, I guess that's not. If the request is out of your reach, you can also ask if someone else in the same region that you connect from have successfully connected to their work via IPsec.

  (2) go to the coffee shop in the street, it works very well on their wireless. So I know this isn't a setting on my computer (believe me, this isn't a firewall setting for a specific network area DRH).

  This explains my answer to question 1, the coffee to ipsec vpn ports, it's nice to attract more customers :)

  (3) when I tried the 'broken' network VPN and had no "Active Tunneling Transparent" active, it asks me my username and password and it shows its connected with the lock at the bottom of the start menu. However, I can't ping or anything on the remote network.

  This a prety relies a lot on the issue to question 1.

  (4) the TCP tunnel at the 10 000 port is blocked with my work.

  IPSec over TCP 10 000 port is usually implemented at the level of the vpn RA server, so if you choose in your IPsec client via tcp on port 10 000, you should be aware that the VPN of RA server must also be configured for this

  (5) IP SEC over UDP does not have human resources

  (6) I am a network of schools and I think they have blocked something, I don't know, but I'm guessing's UDP...

  Q 5 and 6 same answer that question 1,

  Workaround is much based on whether your school allows the ipsec ports, you must contact the network administrator before attempting to troubleshoot a software vpn client.

  Rgds

  Jorge

• Checking the status of a VPN on a 1720

  Y at - it a command that will show me if the lan to lan vpn tunnel is actually on a 1720 router? I noticed that if I type "sho card crypto rtp" it really shows me the configuration but not if it is or not. Someone knows a command to verify the tunnel?

  Pete

  "See the crypto isakmp his."

  shows the peer of vpn and vpn tunnel status

  "sh crypto ipsec his."

  Displays the number of packets in encrypt/decrypt etc.

• Problems to connect via the Cisco VPN client IPSec of for RV180W small business router

  Hello

  I tried to configure my router Cisco of RV180W as a customer VPN IPSec, but have encountered a problem that I hope someone can help me with. "" I managed to do the work of configuration so that the Cisco's VPN IPSec client authenticates successfully with the XAUTH user, I put on the router, but during the negotiation, the client ends with the following, which appears several times on the router error message: ' Mar 20 Oct 19:41:53 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [34360] has no config mode.

  I've read around the internet and a number of people seem to say that the Cisco VPN Client is not compatible with the router, but the same thing happens to my iPhone VPN client.

  Is it possible that this can be implemented? Below, I have attached the full configuration files and the log files. Thank you much in advance.

  Router log file (I changed the IP addresses > respectively as well as references to MAC addresses)

  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: floating ports NAT - T with counterpart > [44074]
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] WARNING: notification to ignore INITIAL-CONTACT > [44074] because it is admitted only after the phase 1.
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: NAT - D payload does not match for > [4500]
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: NAT - D payload does not match for > [44074]
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: received unknown Vendor ID
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: received Vendor ID: CISCO-UNITY
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: NAT detected: is located behind a device. NAT and alsoPeer is behind a NAT device
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: request sending Xauth for > [44074]
  Mar 20 Oct 20:03:10 2015 (GMT + 0000): [r1] [IKE] INFO: ISAKMP Security Association established for > [4500] -> [44074] with spi =>.
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: receives the type of the attribute 'ISAKMP_CFG_REPLY' of > [44074]
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: login successful for the user "myusername".
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: myusername XAuthUser connected from the IP >
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: sending of information Exchange: Notify payload [10381]
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: receives the type of the attribute 'ISAKMP_CFG_REQUEST' of > [44074]
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] WARNING: ignored attribute 5
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] WARNING: attribute ignored 28683
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no mode config
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] WARNING: attribute ignored 28684
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no config mode
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: local configuration for > [44074] has no mode config
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] ERROR: remove the invalid payload with doi:0.
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: purged-Association of ISAKMP security with proto_id = ISAKMP and spi =>.
  Mar 20 Oct 20:03:15 2015 (GMT + 0000): [r1] [IKE] INFO: myusername XAuthUser Logged Out of the IP >
  Mar 20 Oct 20:03:16 2015 (GMT + 0000): [r1] [IKE] INFO: ISAKMP Security Association deleted for > [4500] -> [44074] with spi =>

  The router configuration

  screen_shot_10-20 - 15_at_09.00_pm.png

  

  IKE policy

  screen_shot_10-20 - 15_at_09.00_pm_001.png

  

  screen_shot_10-20 - 15_at_09.01_pm.png

  

  VPN strategy

  screen_shot_10-20 - 15_at_09.02_pm.png

  

  screen_shot_10-20 - 15_at_09.02_pm_001.png

  

  Client configuration

  Hôte : < router="" ip=""> >

  Authentication group name: remote.com

  Password authentication of the Group: mysecretpassword

  Transport: Enable Transparent Tunneling; IPSec over UDP (NAT/PAT)

  Username: myusername

  Password: mypassword

  Please contact Cisco.

  Correct, the RV180 is not compatible with the Cisco VPN Client.  The Iphone uses the Cisco VPN Client.

  You can use the PPTP on the RV180 server to connect a PPTP Client.

  In addition, it RV180 will allow an IPsec connection to third-party customers 3.  Greenbow and Shrew Soft are 2 commonly used clients.

• How does it works VPN behind PAT

  Hello

  Everywhere it is said, "If PAT is applied when a client tries to establish a VPN connection to a remote site, you must activate IPSEC over UDP, TCP, or NAT - T. The thing is that I use a DSL modem at home. And even when I disable transparent tunnelling on my Cisco VPN Client software of connection VPN works well? How can this be possible. is not, we know that the IPSEC packets cannot be PATed?

  MOST devices have IPSec PAT packages ' ing wrong, simply because there is no TCP or UDP port on the basis of the PAT number. It is not that the packages may not be PAT would have, it's just that most of the devices are not smart enough to be able to do, and therefore you should encapsulate your IPSec in UDP or TCP packets.

  I would just say to your modem ADSL is smart enough to understand about you use IPSec and it will be based on a different value in the PAT package. You can have questions from two clients behind this device, like the PAT tool will quite often only able to manage a.

  Routers Cisco were able to do that since the code of 12.2 (15) T, so it is not rare that it works.

• VPN does not work with the ip address of overlap?

  When I plugged my adsl router and I have ip address is 10.1.1.1/8 can I use remote access vpn closing on firewall and authentication works very well and I put the ip address of the pool is 10.7.0.1/16 but I can not access this local lan if I made up of my pc and got 2x2.102.x.y ip address then I connected I can't access no problem local network and vpn remote access authentication.

  It is question of routing on pc with overlapping ip or not?

  Please clarify or provide useful link

  Thank you

  Hello

  It seems that it is a problem of nat - t.

  Make sure that the head of VPN network has "isakmp nat - t" (if that's a PIX). If a hub, make sure that "IPsec NAt - T" is enabled.

  Additionally, make sure that on the client, "Enable Transparent tunneling" is checked, with IPSec over UDP NAT/PAT selected.

  HTH,

  -Kanishka

• DMVPN/GETVPN double spoke router Design

  All the:

  I'm developing a new design of VPN - cloud DMVPN, routers double hub to the main site, router hub unique to the backup site and double routers spoke at the Directorate General/remotes.

  This is all via internet transport, with overlay GETVPN to encrypt.

  Somebody has experiences establishing DMVPN designs with dual spoke routers, and how go you about it? HSRP @ interface outside or inside, determination of Protocol routing only, etc...

  Thanks in advance!

  Hi Steve,.

  Using BGP will complicate things a bit.

  This is because you must announce the IP (used as source GRE) HSRP on both your ISP. If you need to own that IP.

  If this is not possible, you can use the double Hub - double DMVPN Layout (a part of the link DMVPN I joined precedent).

  This will require a WILL by the router and routing to use routing protocol.

  HSRP can still be used on the inside of the interface, the GRE tunnel status tracking.

  Doesnít of traffic must be translated as possible via GRE tunnels.

  Please rate if this helped.

  Kind regards

  Daniel

• Update license of IPS ASA - SSM

  Hello

  We have an ASA-SSM-20 IPS, the license has expired and we purchased a Smartnet contract for the device.

  I would like to know how to upgrade the license.

  We tried to do the ASDM, and chose the option updates to cisco.com.we got the following error.

  internal error. Unable to send the license request. -4: unable to proxy transparent tunnel. Proxy returns "HTTP/1.1 403 Forbidden.

  How to solve this problem or how to do when you use the other option, how to get the license file.

  Best regards

  It seems that your AIP-SSM20 is configured to use an http proxy to connect to the Internet. If you allow the IP address of the AIP-SSM20 management in your web proxy, it may solve your problem.

  If this isn't the issue, you can always apply a license manually. Download your license file here:

  https://Tools.Cisco.com/swift/LicensingUI/home

  and apply via the ASDM or the CLI

  -Bob

• Configure the firewall to allow VPN connections to a remote site

  Hi all

  I do a lot of how to configure VPN servers, so please bear with me if I explain a bit wrong!

  If all goes well a quick question, I am trying to connect a VPN client that is located behind a firewall at a remote PIX server using RADIUS authentication. I am able to ping remote IP of VPN server, but cannot connect - errors are "peer remote unresponsive" for UDP and "has not established TCP connection" for TCP.

  Topology of the short...

  Local PC, fixed IP 192.x.x.1, using VPN Client 4.0.3

  Connect through firewall type unknown to the Internet

  This firewall has outgoing ping enabled, and temporarily all UDP and TCP ports open for pc local ip above fixed.

  VPN client configured with access to the group, and I tried to use UDP and TCP, with and without transparent tunnel.

  Does anyone have any suggestions as to why the connection cannot be made even if the IP of the target can be crazy?

  Thanks in advance,

  Dave.

  Please see the latest posts by Dave and myself.

  Let me know if they help.

• How to move the ASA of IPSEC VPN via UDP to TCP

  I have a client who has a remote desktop with 2 PCs than VPN in to their location of HQ. Previously, two computers where in different places now that they are in the same place. Both PC's are able to successfully establish a VPN connection to the CA by using the Version of the Client VPN Cisco 5.0.07.0290, but only 1 system actually passes the traffic and is able to access the resources at Headquarters.

  I asked another engineer, and they said ' you must configure IPSEC over TCP or use Anyconnect to have multiple clients behind the same PAT' public ed remote ip address... ". ». I would go with IPSEC for TCP connection, so I won't have to uninstall the old client and go through the process of installing the AnyConnect client. Here is the configuration of the ASA 5505 thanks in advance for any help.

  CLIENTASA # sh run

  : Saved

  :

  ASA Version 7.2 (4)

  !

  hostname CLIENTASA

  domain client.local

  activate 72LucMgVuxp5I3Ox encrypted password

  2KFQnbNIdI.2KYOU encrypted passwd

  names of

  !

  interface Vlan1

  nameif inside

  security-level 100

  IP 192.168.1.1 255.255.255.0

  !

  interface Vlan2

  nameif outside

  security-level 0

  IP x.x.x.x where x.x.x.x

  !

  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

  !

  interface Ethernet0/7

  !

  passive FTP mode

  DNS server-group DefaultDNS

  domain client.local

  standard SPLIT-TUNNEL access list permit 192.168.1.0 255.255.255.0

  outside_in list extended access permit tcp any any eq smtp

  outside_in list extended access permit tcp any any eq www

  outside_in list extended access permitted tcp everything any https eq

  access-list extended sheep allowed ip 192.168.1.0 255.255.255.0 10.99.99.0 255.255.255.0

  pager lines 24

  Enable logging

  recording of debug console

  debug logging in buffered memory

  asdm of logging of information

  Within 1500 MTU

  Outside 1500 MTU

  pool local IP VPN-10.99.99.100 - 10.99.99.200

  ICMP unreachable rate-limit 1 burst-size 1

  ASDM image disk0: / asdm - 523.bin

  don't allow no asdm history

  ARP timeout 14400

  Global 1 interface (outside)

  NAT (inside) 0 access-list sheep

  NAT (inside) 1 192.168.1.0 255.255.255.0

  NAT (inside) 1 0.0.0.0 0.0.0.0

  public static tcp (indoor, outdoor) interface www 192.168.1.2 netmask 255.255.255.255 www

  public static tcp (indoor, outdoor) interface https 192.168.1.2 netmask 255.255.255.255 https

  public static tcp (indoor, outdoor) interface smtp 192.168.1.2 netmask 255.255.255.255 smtp

  Access-group outside_in in external interface

  Route outside 0.0.0.0 0.0.0.0 x.x.x.x 1

  Timeout xlate 03:00

  Timeout conn 01:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02

  Sunrpc timeout 0:10:00 h323 0:05:00 h225 mgcp from 01:00 0:05:00 mgcp-pat 0:05:00

  Sip timeout 0:30:00 sip_media 0:02:00 prompt Protocol sip-0: 03:00 sip - disconnect 0:02:00

  Timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute

  AAA authentication enable LOCAL console

  the ssh LOCAL console AAA authentication

  Enable http server

  http 192.168.1.0 255.255.255.0 inside

  No snmp server location

  No snmp Server contact

  Server enable SNMP traps snmp authentication linkup, linkdown cold start

  Crypto ipsec transform-set esp-3des esp - esp-md5-hmac

  Crypto dynamic-map VPNDYN 1 set transform-set esp-3des

  vpn ipsec dynamic VPNDYN 65535-isakmp crypto map

  vpn outside crypto map interface

  crypto ISAKMP allow outside

  crypto ISAKMP policy 100

  preshared authentication

  the Encryption

  md5 hash

  Group 2

  life 86400

  crypto ISAKMP policy 65535

  preshared authentication

  the Encryption

  sha hash

  Group 2

  life 86400

  Telnet 0.0.0.0 0.0.0.0 inside

  Telnet timeout 5

  SSH 0.0.0.0 0.0.0.0 inside

  SSH 0.0.0.0 0.0.0.0 outdoors

  SSH timeout 5

  Console timeout 0

  dhcpd dns 192.168.1.2

  dhcpd outside auto_config

  !

  des-sha1 encryption SSL rc4 - md5

  VPN-POLICY group policy interns

  attributes of VPN-POLICY-group policy

  value of server DNS 192.16.1.2

  Split-tunnel-policy tunnelspecified

  Split-tunnel-network-list value of SPLIT TUNNEL

  admin PWpqnmc2BqJP9Qrb encrypted privilege 15 password username

  password encrypted vpn2 ZBNuNQsIyyMGbOB2 user name

  username vpn3 encrypted password 15c4LrPNccaj1Ufr

  vpn1 fsQgwXwSLokX6hEU encrypted password username

  tunnel-group CLIENTVPN type ipsec-ra

  attributes global-tunnel-group CLIENTVPN

  address VPN-POOL pool

  Group Policy - by default-VPN-POLICY

  IPSec-attributes tunnel-group CLIENTVPN

  pre-shared-key *.

  !

  class-map inspection_default

  match default-inspection-traffic

  !

  !

  type of policy-card inspect dns preset_dns_map

  parameters

  message-length maximum 512

  Policy-map global_policy

  class inspection_default

  inspect the preset_dns_map dns

  inspect the ftp

  inspect h323 h225

  inspect the h323 ras

  inspect the rsh

  inspect the rtsp

  inspect esmtp

  inspect sqlnet

  inspect the skinny

  inspect sunrpc

  inspect xdmcp

  inspect the sip

  inspect the netbios

  inspect the tftp

  !

  global service-policy global_policy

  context of prompt hostname

  Cryptochecksum:41bd95c164a63bb26b01c109ab1bd68a

  : end

  CLIENTASA #.

  Hello

  You can try adding

  Crypto isakmp nat-traversal 30

  And test connections

  I think that you need to add to use the TCP protocol

  Crypto isakmp ipsec-over-tcp 10000

  You will also need to change the Transparent tunnel setting on the profile of Client VPN software to use TCP instead of option of NAT/PAT.

  -Jouni

• IPsec over UDP - remote VPN access

  Hello world

  The VPN client user PC IPSEC over UDP option is checked under transport.

  When I check the details of the phase 1 of IKE ASDM of user login, it shows only UDP 500 port not port 4500.

  Means that user PC VPN ASA there that no device in question makes NAT.

  What happens if we checked the same option in the client IPSEC VPN - over UDP and now, if we see the port UDP 4500 under IKE phase 1 Connection Details

  This means that there is now ASA a NAT device VPN Client PC, but he allows IKE connection phase 1?

  Concerning

  MAhesh

  Hello Manu,

  I suggest to use the following commands on your ASA have a look at these ports as the test of VPN connections. The command that you use depends on your level of software as minor changes in the format of the command

  View details remote vpn-sessiondb

  view sessiondb-vpn remote detail filter p-ipaddress

  Or

  View details of ra-ikev1-ipsec-vpn-sessiondb

  display the filter retail ra-ikev1-ipsec-vpn-sessiondb p-ipaddress

  These will provide information on the type of VPN Client connection.

  Here are a few out of different situations when connecting with the VPN Client

  Dynamic PAT - no Transparent on the Client VPN tunnel

  • Through the VPN connections do not work as connects via PAT without Transparent tunnel

  Username: Index: 22

  Public IP address 10.0.1.2 assigned IP::

  Protocol: IPsec IKEv1

  IKEv1:

  Tunnel ID: 22.1

  The UDP Src Port: 18451 UDP Dst Port: 500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: AES 256 hash: SHA1

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28551 seconds

  Group D/H: 2

  Name of the filter:

  Client OS: Windows NT Client OS worm: 5.0.07.0290

  IPsec:

  Tunnel ID: 22.2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 10.0.1.2/255.255.255.255/0/0

  Encryption: AES 256 hash: SHA1

  Encapsulation: Tunnel

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28551 seconds

  Idle Time Out: 30 Minutes idling left: 25 Minutes

  TX Bytes: 0 Rx bytes: 0

  TX pkts: Rx Pkts 0: 0

  Dynamic PAT - Transparent tunnel (NAT/PAT) on the VPN Client

  • Via VPN connections work as we use Tunneling Transparent when we train the dynamic VPN Client through PAT connection

  Username: Index: 28

  Public IP address 10.0.1.2 assigned IP::

  Protocol: IKEv1 IPsecOverNatT

  IKEv1:

  Tunnel ID: 28.1

  The UDP Src Port: 52825 UDP Dst Port: 4500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: AES 256 hash: SHA1

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28784 seconds

  Group D/H: 2

  Name of the filter:

  Client OS: Windows NT Client OS worm: 5.0.07.0290

  IPsecOverNatT:

  Tunnel ID: 28.2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 10.0.1.2/255.255.255.255/0/0

  Encryption: AES 256 hash: SHA1

  Encapsulation: Tunnel

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28784 seconds

  Idle Time Out: 30 Minutes idling left: 30 Minutes

  TX Bytes: 360 bytes Rx: 360

  TX pkts: 6 Pkts Rx: 6

  Dynamics PAT, Transparent IPsec (TCP) on the Client VPN tunnel

  • Via VPN connections work as we use Tunneling Transparent when we train the dynamic VPN Client through PAT connection

  Username: Index: 24

  Public IP address 10.0.1.2 assigned IP::

  Protocol: IKEv1 IPsecOverTCP

  IKEv1:

  Tunnel ID: 24.1

  The UDP Src Port: 20343 UDP Dst Port: 500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: AES 256 hash: SHA1

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28792 seconds

  Group D/H: 2

  Name of the filter:

  Client OS: Windows NT Client OS worm: 5.0.07.0290

  IPsecOverTCP:

  Tunnel ID: 24,2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 10.0.1.2/255.255.255.255/0/0

  Encryption: AES 256 hash: SHA1

  Encapsulation: Tunnel TCP Src Port: 20343

  The TCP Dst Port: 10000

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28792 seconds

  Idle Time Out: 30 Minutes idling left: 30 Minutes

  TX Bytes: 180 bytes Rx: 180

  TX pkts: Rx 3 Pkts: 3

  Static NAT - no Transparent on the Client VPN tunnel

  • VPN Client connections to the LAN work because our VPN Client has a static NAT configured for its local IP address. This allows the ESP without encapsulation through the device doing the static NAT. You must allow the ESP traffic through the NAT device of management of the device VPN or configure VPN connections inspection if there is an ASA acting as the NAT device.

  Username: Index: 25

  Public IP address 10.0.1.2 assigned IP::

  Protocol: IPsec IKEv1

  IKEv1:

  Tunnel ID: 25.1

  The UDP Src Port: 50136 UDP Dst Port: 500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: AES 256 hash: SHA1

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28791 seconds

  Group D/H: 2

  Name of the filter:

  Client OS: Windows NT Client OS worm: 5.0.07.0290

  IPsec:

  Tunnel ID: 25.2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 10.0.1.2/255.255.255.255/0/0

  Encryption: AES 256 hash: SHA1

  Encapsulation: Tunnel

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28791 seconds

  Idle Time Out: 30 Minutes idling left: 30 Minutes

  TX Bytes: 120 bytes Rx: 120

  TX pkts: Rx 2 Pkts: 2

  Static NAT - Transparent tunnel (NAT/PAT) on the VPN Client

  • The VPN Client connections are functioning normally. Even if the host Staticly using a NAT VPN Client does not need UDP encapsulation it is always used if your connection of the VPN Client profile is configured to use (tab in the Transport of the client software)

  Username: Index: 26

  Public IP address 10.0.1.2 assigned IP::

  Protocol: IKEv1 IPsecOverNatT

  IKEv1:

  Tunnel ID: 26.1

  The UDP Src Port: 60159 UDP Dst Port: 4500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: AES 256 hash: SHA1

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28772 seconds

  Group D/H: 2

  Name of the filter:

  Client OS: Windows NT Client OS worm: 5.0.07.0290

  IPsecOverNatT:

  Tunnel ID: 26.2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 10.0.1.2/255.255.255.255/0/0

  Encryption: AES 256 hash: SHA1

  Encapsulation: Tunnel

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28772 seconds

  Idle Time Out: 30 Minutes idling left: 29 Minutes

  TX Bytes: 1200 bytes Rx: 1200

  TX pkts: Rx 20 Pkts: 20

  Static NAT - Transparent tunnel on the VPN Client (IPsec, TCP)

  • The VPN Client connections are functioning normally. Even if the host Staticly using a NAT VPN Client does not need TCP encapsulation it is always used if your connection of the VPN Client profile is configured to use (tab in the Transport of the client software)

  Username: Index: 27

  Public IP address 10.0.1.2 assigned IP::

  Protocol: IKEv1 IPsecOverTCP

  IKEv1:

  Tunnel ID: 27.1

  The UDP Src Port: 61575 UDP Dst Port: 500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: AES 256 hash: SHA1

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28790 seconds

  Group D/H: 2

  Name of the filter:

  Client OS: Windows NT Client OS worm: 5.0.07.0290

  IPsecOverTCP:

  Tunnel ID: 27.2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 10.0.1.2/255.255.255.255/0/0

  Encryption: AES 256 hash: SHA1

  Encapsulation: Tunnel TCP Src Port: 61575

  The TCP Dst Port: 10000

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 28790 seconds

  Idle Time Out: 30 Minutes idling left: 30 Minutes

  TX Bytes: 120 bytes Rx: 120

  TX pkts: Rx 2 Pkts: 2

  VPN device with a public IP address directly connected (as a customer VPN) to an ASA

  Username: Index: 491

  Assigned IP: 172.31.1.239 public IP address:

  Protocol: IPsec IKE

  IKE:

  Tunnel ID: 491.1

  The UDP Src Port: 500 UDP Dst Port: 500

  IKE Neg Mode: Aggressive Auth Mode: preSharedKeys

  Encryption: 3DES hash: SHA1

  Generate a new key Int (T): 86400 seconds given to the key Left (T): 71016 seconds

  Group D/H: 2

  Name of the filter:

  IPsec:

  Tunnel ID: 491.2

  Local addr: 0.0.0.0/0.0.0.0/0/0

  Remote addr: 172.31.1.239/255.255.255.255/0/0

  Encryption: AES128 hash: SHA1

  Encapsulation: Tunnel

  Generate a new key Int (T): 28800 seconds given to the key Left (T): 12123 seconds

  Generate a new key Int (D): 4608000 K-bytes given to the key Left (D): 4607460 K-bytes

  Idle Time Out: 0 Minutes idling left: 0 Minutes

  TX Bytes: bytes 3767854 Rx: 7788633

  TX pkts: 56355 Pkts Rx: 102824

  Above are examples for your reference. I must also say that I am absolutely not an expert when it comes to virtual private networks in general. I had to learn two firewall/vpn basically on my own, as during my studies, we had no classes related to them (which was quite strange).

  While I learned how to set up VPN and troubleshoot them I think I missed on the basic theory. I had plans to get the title Associates CCNA/CCNP certifications but at the moment everything is possible. Don't have the time for it.

  I guess that you already go to the VPN security CCNP Exam?

  Hope this helps and I hope that I didn't get anything wrong above

  -Jouni

• Linksys BEFSR41

  Can someone explain this, I have a router 3725 (IOS12.3), acting as a VPN server with remote users running VPN Client 4.0 linking in no problem (all have their PCs connected directly to their DSL modems and have transparent tunneling enabled in VPN 4.0 client). Now, I'm trying to set up a client who wants to share their link DSL between a home PC and a laptop that they sometimes use to connect to our network by using VPN 4.0 client.

  I first set up with all the settings by default on the linksys (which a IPSEC pass through active) and VPN client with active transparent tunnel, it worked fine. Then one day suddenly stopped working, I could not get it working again, I tried everything on the linksys site as port of port 500 and 10000 etc. port redirection does not, then just by chance, I have disabled the tunneling transparent on the client and it worked, then I tried to disable port forwarding and disable ipsec pass through on the linksys and it still worked and it seems to work with tunneling disabled transparent, independently of any setting on the linksys, I'm not familiar with NAT - T etc., which I heard was auto detected by the client and the router, but it's not supposed I thought that the customer required transparent tunnel to bypass a NAT device, which is the linksys router.

  Anyone can do the some light on it, it has baffled me!

  TIA

  Mike

  The Transparent tunneling functionality on the client won't actually do anything when you connect to a router. This feature allows the VPN client encapsulate every IPSec packets in UDP or TCP packets, as you say, so they will be able to go through a PAT tool. This feature works only when it connects to a VPN concentrator and must also be enabled on the hub. The default TCP/UDP ports using this feature is 10000.

  This feature has been in the VPN3000 product before the introduction of NAT - T, the standard way of the IETF to make IPSec encapsulation. NAT - T is basically the same as the tunnel Transparent service, however there is no set up required of the client or in the router to make it work. The mother lode of NAT - T is endpoints automatically detects if there is a NAT device between them during the negotiation of tunnel, and if so, they encapsulate while UDP port 4500 packets.

  Thus, the client and the router doing NAT - T automatically, that's why they work through LinkSys. The Transparent tunnel on the client option is the previous version of Cisco IPSec encapsulation owners, which does not work (but also does not matter if it is activated) when connecting to a router.

• Server ezvpn 887 router for remote access

  Hello.

  I'm having a problem with the implementation of remote access using easyvpn server on a router 887.  I followed the tutorials and also used Assistant cisco configuration professional easyvpn server to the configuration but still having a problem.

  I see, but Phase 1 finished, Phase 2 will fail with the following error...

  09:43:26.515 Oct 10: ISAKMP: (2003): check IPSec proposal 8

  09:43:26.515 Oct 10: ISAKMP: turn 1, ESP_AES

  09:43:26.515 Oct 10: ISAKMP: attributes of transformation:

  09:43:26.515 Oct 10: ISAKMP: authenticator is HMAC-SHA

  09:43:26.515 Oct 10: ISAKMP: key length is 128

  09:43:26.515 Oct 10: ISAKMP: program is 1 (Tunnel)

  09:43:26.515 Oct 10: ISAKMP: type of life in seconds

  09:43:26.515 Oct 10: ISAKMP: service life of SA (IPV) 0x0 0 x 20 0xC4 0x9B

  09:43:26.515 Oct 10: ISAKMP: (2003): atts are acceptable.

  09:43:26.515 Oct 10: IPSEC (validate_proposal_request): part #1 the proposal

  09:43:26.515 Oct 10: IPSEC (validate_proposal_request): part #1 of the proposal

  (Eng. msg key.) Local INCOMING = 88.xx.xxx.174:0, distance = 80.177.185.185:0,.

  local_proxy = 0.0.0.0/0.0.0.0/0/0 (type = 4),

  remote_proxy = 192.168.21.12/255.255.255.255/0/0 (type = 1),

  Protocol = ESP, transform = NONE (Tunnel),

  lifedur = 0 and 0kb in

  SPI = 0 x 0 (0), id_conn = 0, keysize = 128, flags = 0 x 0

  09:43:26.515 Oct 10: map_db_find_best found no corresponding card

  09:43:26.515 Oct 10: IPSEC (ipsec_process_proposal): proxy unsupported identities

  09:43:26.515 Oct 10: ISAKMP: (2003): IPSec policy invalidated proposal with error 32

  'Proxy unsupported identities' research indicates a NAT problem maybe, but I don't see where this would be.  In my view, the problem is elsewhere.

  I use the VPN Client 5.0.07.0440 and using transparent tunneling IPSec (on TCP/10000) that the client is located behind a firewall/NAT device.

  Does anyone know what may be the issue?  Attached full config.

  Hello Mick

  Before that, one more try. .

  Remote control the pfs as follows

  Profile of crypto ipsec RemoteAccess

  no set pfs group2

  Remove and add the virtual model crypto back

  type of interface virtual-Template1 tunnel

  No ipsec protection RemoteAccess tunnel profile

  Profile of tunnel RemoteAccess ipsec protection

  I hope this will solve your problem

  Henin,

• ASA 5505 ipsec vpn connection fails

  Hello

  I'm trying to configure a Cisco ASA 5505 for Remote Clients.

  I use the ASDM interface and used assistants start and ipsec for my setup, but im hit a stumbling block.

  To last make it work 2 days I have tried a number of configuration changes to try to make this work but didn't, so I did a factory reset and passed by the assistants, once again, I have a clean Setup that I hope someone can help me.

  Currently I have an IP public static 81.137.x.x and I use a Netgear ADSL router, which transfers (UDP 500) VPN traffic to 192.168.171.35 (port wan on the ASA 5505).

  The Cisco ASA has a default address of 192.168.1.1

  I use the Cisco Client 5.0.06.0160.

  I have configured the client to use authentication group with the same credentials as configuration through the wizard and im using Transparent Tunneling IPSec over UDP.

  I have attached 2 documents

  running_config.txt - what is shows the current configuration of ASA

  Journal - View.txt - display of error messages displayed in the real-time log viewer when I try to connect from the remote client.

  I'm not sure if I need to do on the other that additional configurations for my setup simply run the wizards.

  Any help would be appreciated.

  Thank you

  Hello Philippe,

  According to the lines in the journal, there is a problem of routing for ip vpn applicant address. ASA couldn't find the definition of route suitable for the return traffic. Add a default route to unknown destinations could solve this problem. As I see you are using modem netgear as a default gateway for your ASA. I write example of command line for this purpose.

  Route outside 0.0.0.0 0.0.0.0 NetGear_LAN_IP_Address 1

  Ufuk Güler