IPsec over a WAN link

Similar Questions

• IPSec over TCP on Pix

  Nice day

  I would like to know if there is the possibility of configuring IPSEC over TCP on the pix Firewall.

  This features are supported by the latest Pix OS (6.3.3)?

  Thank you

  Diego

  The pix does not support ipsec over tcp. It supports NAT Traversal that is ipsec over udp. IPSEC over tcp is compatible with the VPN concentrator. The next link talks about NAT traversal.

  http://www.Cisco.com/univercd/CC/TD/doc/product/iaabu/PIX/pix_sw/v_63/config/ipsecint.htm#1057446

  Take a look at this link to configure IPSec over TCP on a VPN 3000 Concentrator

  http://www.Cisco.com/en/us/products/HW/vpndevc/ps2284/products_configuration_example09186a00800946bc.shtml

• Upgrade over the WAN

  I am running VirtualCenter Server 2.5 with five host ESX 3.5.

  Guests are spread over three different sites, 2 on a site with the Virtual Center, 2, on another site and another site.

  I want to upgrade to vSphere 4.0.

  I intend on creating a new server vCenter Server, so I can move to a 64 bit OS. I'll join the old database to the new server and have the Installer update the diagram for me. I'll probably keep the old server online that my license server until the upgrade process is complete, and then decommision it.

  I'll also have an instance of Update Manager, installed on the new server vCenter Server that I am building.

  My question is, what is the most effective way to make upgrades to host account to the fact that 3 of the hosts have a WAN link between them and the instance of Update Manager?

  To patch, you can use the functionality of the step of the Update Manager.

  But for the stage of upgrade (IMHO) might be better to use a local client computer with vSphere host Update Utility:

  Download ISO locally, and then run the upgrade.

  André

• IPSec over TCP on PIX 501F to the catalog

  Hello

  Is there a way I can configure IPSec over TCP as default configuration in the PIX firewall. I'm under 6.3

  The PIX does not support IPsec over TCP. It doesn't support NAT - T, which is IPSec over UDP/4500, which houses also of the Cisco VPN client. Just add the following command on the PIX:

  ISAKMP nat-traversal

  The PIX and VPN client auto-négociera if necessary IPSec encapsulation. See http://www.cisco.com/univercd/cc/td/doc/product/iaabu/pix/pix_sw/v_63/cmdref/gl.htm#wp1027312 for more details.

• Difference between IPSec over TCP and UDP IPsecover

  Hello world

  I'm testing the VPN to the user's PC.

  When I test the PC of the user using IPsecoverTCP it uses protocol 10000.

  When I check on ASA - ASDM under connection details

  ike1 - UDP Destination Port 500

  IPsecOverTCP TCP Dst Port 10000

  using Ipsecover UDP

  IKEv1 - Destination UDP 500 Port

  IPsecOverUDP - Port of Destination UDP Tunnel 10000

  Therefore when using TCP or UDP uses the same port 500 and 10000.

  Is need to know what is the major difference between these two connections just TCP or UDP?

  Concerning

  MAhesh

  IPSec over TCP is used in scenarios where:

  1 UDP port 500 is blocked, resulting in incomplete IKE negotiations

  2 ESP is not allowed to cross and encrypted traffic thus do not cross.

  3. network administrator prefers to use a connection oriented protocol.

  4. IPSec over TCP may be necessary when the intermediate NAT or PAT device is stateful firewall.

  As there are IPSec over UDP with IPSec over TCP, there is no room for negotiation. IPSec on the TCP packets are encapsulated from the beginning of the cycle of implementation of the tunnel. This feature is available only for remote access VPN not for tunnel L2L. Also does not work with proxy firewall.

  While IPSec via UDP, similar to NAT - T, is used to encapsulate ESP packets using a UDP wrapper. Useful in scenarios where the VPN clients don't support NAT - T and are behind a firewall that does not allow the ESP packets to pass through. IN IPSec over UDP, the IKE negotiations has always use port UDP 500.

• Client VPN with tunneling IPSEC over TCP transport does not

  Hello world

  Client VPN works well with tunneling IPSEC over UDP transport.

  I test to see if it works when I chose the VPN client with ipsec over tcp.

  Under the group policy, I disabled the IPSEC over UDP and home port 10000

  But the VPN connection has failed.

  What should I do to work VPN using IPSEC over TCP

  Concerning

  MAhesh

  Mahesh,

  You must use "ikev1 crypto ipsec-over-tcp port 10000.

  As crypto isakmp ipsec-over-tcp work on image below 8.3

  HTH

• PIX support IPsec over UDP or TCP

  Series 500 firewall Cisco PIX support IPsec over UDP or TCP so that the secure tunnel VPN IPsec can go through the PAT and NAT. If so, how to configure it? THX

  Concerning

  Jeffrey

  Hi Jeff,

  The tentative date is around end of March 2003.

  Kind regards

  Arul

• 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

• IPSec over TCP works on VPN 3030 interface (3) external?

  I configured the third external interface and can connect with the ESP and UDP tunnel, but not with IPsec over TCP.

  The customer says:

  Unexpected TCP control packet received a.b.c.d, src port 10000, port dst 4408, flags 14: 00

  the hub said nothing, although I tried several event classes

  the document said "IPSec over TCP works with the VPN client software and hardware VPN 3002 client. It only works on the public interface. It is a client to the function of hub only. It does not work for LAN-to-LAN connections. "

  This means - it works on the public interface real, physical?

  or it should work on the external interface if I click on the checkbox to its public interface?

  Thanks for any advice,

  Martin

  IPSec over TCP is designed to operate only on the real public interface #2.

  There were a few technical reasons behind it, among them:

  (1) some clients cancel their tunnels on the private interface (one-arm-config) and that would cause a headache when trying to HTTP through the VPN 3000 if IPSec/TCP has been installed for Port 80/443. We decided to pull out of the private Interface.

  (2) that the external interface #3, we have chosen not to enable IPSec/over TCP Dynamics fielterso n it mainly because of the load balancing.

  Since the LB only works on real public interface #2, even once, we chose to leave

  IPSec/TCP out of it.

  Nelson

• VPN IPsec over TCP on PIX 6.3

  Hi all:

  Does anyone know how config IPsec over TCP on PIX6.3?

  Thank you all...

  Ted Wen.

  Hello

  You can enable IPSec over TCP to PIX Security Appliance Software Version 7.0 with the command "isakmp ipsec-over-tcp port. But I can't make it work and have posted my problem on the Forums of Discussion.

  Thank you.

  B.Rgds,

  Lim TS

• IPSec Over TCP

  When you set this option on the SAA, that affect all VPN? It is an element of configuration global, if I work with UDP VPN, but I am to set up a VPN using TCP, the other VPN still use UDP, or that they do not fail as the other end isn't the same configuration?

  IPSec over TCP is supported only for the connection to access remote vpn client for the SAA. It is not supported for VPN LAN-to-LAN tunnel.

  And Yes, it will affect all the client connection to access remote vpn for the SAA once you activate it in the world.

  Here is the document for your reference:

  http://www.Cisco.com/en/us/docs/security/ASA/asa83/configuration/guide/IKE.html#wp1059912

• P2v on wan link

  I have a concert wan link and I think to p2v a box on it... the server itself is more than 500 GB... good idea? any thoughts?

  How stable is the link and the latency. If it's almost LAN then it is possible to do. Tools such as Platespin Migrate could even resume or change replication since the last P2V block.

• Can I change the icon of the cursor when hover over one active link with another?

  Can I change the icon of the cursor when hover over one active link with another?

  Muse does not natively support, but all you need to do to make it work is on your page, add properties in the head content:

  Where "value" is the cursor you want for example for a cross-shaped cursor...

• IPSEC VPN on the dual WAN links

  Here's my situation. I have two identical sites ASA 5505 and each has the dual wan/ISP connection and are set to resume using the sla monitor followed. I would like to create a vpn between these two sites that remains active regardless of what ISP link is online. Just make two crytpo card statements10 and a 20 inside each of the asa to each of the other ASA STATIC PUBLIC IP? It works or cause problems?

  Configuration of SITE B

  card crypto Cox_Primary_map 10 corresponds to the address Cox_Primary_cryptomap_10

  crypto Cox_Primary_map 10 peer 72.X.X.X card game<== primary="" static="" isp="" at="" site="">

  10 Cox_Primary_map transform-set ESP-3DES-SHA crypto card game

  card crypto Qwest_Backup_map 20 corresponds to the address Qwest_Backup_cryptomap_20

  crypto Qwest_Backup_map 20 peer 98.X.X.X card game<== backup="" static="" isp="" at="" site="">

  Qwest_Backup_map 20 transform-set ESP-3DES-SHA crypto card game

  tunnel-group 72.X.X.X type ipsec-l2l

  IPSec-attributes tunnel-group 72.X.X.X

  pre-shared-key adadsfasdf

  tunnel-group 98.X.X.X type ipsec-l2l
  IPSec-attributes tunnel-group 98.X.X.X

  pre-shared-key adadsfasdf

  Thank you

  Jesse,

  One of the solutions to your problem is to apply the same for both interfaces crypto card and have the two counterparts mentioned under a crypto map entry.

  Since you're using track/IP SLA to activate a single link to a single IP address of time will be answers.

  http://www.Cisco.com/en/us/docs/security/ASA/asa84/command/reference/C5.html#wp2278871

  Have several inputs card crypto with the same statement in game will cause problems.

  Hope that makes sense.

  Marcin

• I used once this add that when I mouse over a word/link, a pop up will show the meaning/image of the word, or results of the research. What is add?

  I am looking for this particular add on or application that allows me to pass my mouse over a word or link and a pop up will appear next to such word or link showing either an image or Word or a look at the link. Sometimes it displays suggestions of sites related to the word (almost similar to the search results). I've used it before, but I can't remember what it's called. I would like to use it again.

  Hello. I had a quick glance I think I found something that can help. An add-on called "Wiktionary and Google Translate" give a go. You can find it here.

  Feel free to let the developer of the addon of the comments if you wish. It looks really useful, I might be tempted to use this myself.