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

Tags: Cisco Security

Similar Questions

  • 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.

  • 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

  • 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

  • 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

  • 3.5.1 to 506th Pix VPN Client using IPsec over TCP

    Is it possible to do when there is a device in the path of the VPN tunnel that will make the static NAT?

    The reason is that the external interface of the Pix will have a private address, and it is the endpoint of the tunnel. The performance of NAT device has a public address, who thinks that the VPN client is the end of the tunnel, the static NAT will result the incoming packets on port UDP 500 for a destination of the Pix.

    Thank you.

    The Pix can not do TCP encapsulation. He can do UDP encapsulation.

    You can create IPSec tunnels to the external of the Pix even if address he addresses NATted provided that it is NOT of PAT and NAT.

  • 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

  • After a virus, I am unable to connect to the internet. Event log messages: the NetBios over TCP/IP service failed to start due to the following error...

    original title: NETBios TCPIP of missing in Device Manager

    I recently had to run two antivirus programs on an infected computer and am now unable to connect to the internet. When I went to the event viewer, I noticed the following error messages:

    Event type: error

    Event source: Service Control Manager

    Event category: no

    Event ID: 7000

    Date: 16/01/2012

    Time: 12:31:17

    User:                       N/A

    Computer: JARRIOUSSTUDIO

    Description:

    The NetBios over TCP/IP service failed to start due to the following error:

    The service cannot be started, either because it is disabled or because it has no enabled devices is associated to him.

    Event type: error

    Event source: Service Control Manager

    Event category: no

    Event ID: 7001

    Date: 16/01/2012

    Time: 12:31:17

    User:                       N/A

    Computer: JARRIOUSSTUDIO

    Description:

    The DHCP Client service depends on the NetBios over TCP/IP service which failed to start because of the following error:

    The service cannot be started, either because it is disabled or because it has no enabled devices is associated to him.

    Event type: error

    Event source: Service Control Manager

    Event category: no

    Event ID: 7001

    Date: 16/01/2012

    Time: 13:32:01

    User:                       N/A

    Computer: JARRIOUSSTUDIO

    Description:

    The DHCP Client service depends on the NetBios over TCP/IP service which failed to start because of the following error:

    A device attached to the system does not work.

    Event type: error

    Event source: Service Control Manager

    Event category: no

    Event ID: 7001

    Date: 16/01/2012

    Time: 13:32:01

    User:                       N/A

    Computer: JARRIOUSSTUDIO

    Description:

    The helpdesk TCP/IP NetBIOS depends on the NetBios over TCP/IP service which failed to start because of the following error:

    A device attached to the system does not work.

    When I look in the Drivers folder, I see netbt, but devices & Non Plug and Play Devices, of TCPIP NETBios is not listed in Manager.

    Hi Diddy Dell,

    Follow these methods.

    Method 1: Performs a search using the Microsoft safety scanner.

    http://www.Microsoft.com/security/scanner/en-us/default.aspx

    Note: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

    Method 2: Follow these steps:

    Step 1: Start the computer in safe mode with network and check if the problem persists.

    A description of the options to start in Windows XP Mode

    http://support.Microsoft.com/kb/315222

    Step 2: If the problem does not persist in SafeMode with network, perform a clean boot to see if there is a software conflict as the clean boot helps eliminate software conflicts.

    How to configure Windows XP to start in a "clean boot" State

    http://support.Microsoft.com/kb/310353

    Note: After completing the steps in the clean boot troubleshooting, follow the section How to configure Windows to use a Normal startup state of the link to return the computer to a Normal startupmode.

    After the clean boot used to resolve the problem, you can follow these steps to configure Windows XP to start normally.

    (a) click Start, run.

    (b) type msconfigand click OK.

    (c) the System Configuration Utility dialog box appears.

    (d) click the general tab, click Normal startup - load all services and device drivers and then click OK.

    (e) when you are prompted, click on restart to restart the computer.

    Method 3: Follow the steps in the article.

    How to reset the Protocol Internet (TCP/IP)

    http://support.Microsoft.com/kb/299357

    Windows wireless and wired network connection problems

    http://Windows.Microsoft.com/en-us/Windows/help/wired-and-wireless-network-connection-problems-in-Windows

  • Disabling NetBIOS over TCP/IP

    Don't know if I'm in the right forum or not, but I have about 25 remote PCs, all on Windows XP (don't worry, they will be upgraded to Windows 7 at the end of the year), for which I need to disable NetBIOS over TCP/IP and run into a problem.  I tested this command on the command line on several computers in my cabin-

    WMIC / interactive: off nicconfig where TcpipNetbiosOptions = call SetTcpipNetbios 2 0

    Disables it very well if I'm typing on the command line with the PC directly - and almost immediately, too.  But when I connect remotely to a computer offsite (via ssh) which puts me at the command line, if I type this exact command, I'm locked up completely without response from the keyboard either.  I have to close the window - no other way out.  No idea why that might be?

    PS - I even tried to put this command in a batch script and calling the command and he locked up in exactly the same way.

    As I read the article on the first link of Azam, reality that turns off NetBT is set at the server level.

    In fact, the setting at the customer level to 'Setting use NetBIOS on the DHCP server' is the default, so it must be already set that way unless your users have been sleeping.

    There are other ideas in this thread--> http://social.technet.microsoft.com/Forums/en-US/winservercore/thread/d18bd172-e1a0-4a61-ba52-0952a1e3cabc/

  • [SOLVED] Error 404 Google + card Tunnel Teredo Tunneling Pseudo-Interface disabled in NetBIOS over TCP/IP

    I realize that it is a long title.  It could be useful describe my problem.

    Recently, I downloaded something (not sure if I can't talk about website) and with download received 4 bad files found by Malwarebytes named: PUP. OfferBundle and PUP. ToolbarDownload.  These 4 files were quarantined and then removed, but this does not solve my problem.  I ran Microsoft and other spyware, but nothing more has been discovered.

    I have Norton Internet Security, which extends constantly and I always have these terrible files.

    I can not access Google search engine.  I get this message: error 404 (not FOUND)! 1

    The address bar reads: cgi-bin/redirect.ha.  I have another computer and am able to access Google since the router same use so I know there are still a few malware rootkit on my computer which may be connected to the Teredo Tunneling adapter, I don't understand.

    I'm not sure how to solve this problem.  I don't know where watch, but ran many scans of data collection.  Here is a part of a single test showing wireless and LAN configurations:

    Windows IP configuration

    Name of the host...: StrikingEagle-HP

    Primary Dns suffix...:

    Node... type: hybrid

    Active... IP routing: No.

    Active... proxy WINS: No.

    ... DNS suffix search list: att.net

    Wireless Network Connection 2 wireless LAN adapter:

    State of the media...: Media disconnected

    The connection-specific DNS suffix. :

    ... Description: Microsoft Virtual WiFi Miniport adapt

    Physical address.... : 20-10-7A-1C-AF-7D

    DHCP active...: Yes

    Autoconfiguration enabled...: Yes

    Wireless network connection Wireless LAN adapter:

    The connection-specific DNS suffix. : att.net

    Description...: Realtek RTL8188CE 802.11b/g/n WiFi adapt

    Physical address.... : 20-10-7A-1C-AF-7D

    DHCP active...: Yes

    Autoconfiguration enabled...: Yes

    IPv6 address: 2602:306:cdb8:5300:b5fc:b411:6df0:e722 (Preferred)

    Temporary IPv6 address...: 2602:306:cdb8:5300:b9d4:2772:d89a:3a5f (Preferred)

    Address IPv6 local link...: fe80::b5fc:b411:6df0:e722% 13 (Preferred)

    IPv4 address...: 192.168.1.73 (Preferred)

    ... Subnet mask: 255.255.255.0.

    Lease obtained...: Sunday, April 22, 2012 23:29:35

    End of the lease...: Monday, April 23, 2012 23:29:34

    ... Default gateway. : fe80::42b7:f3ff:fec9:a2e0% 13

    192.168.1.254

    DHCP server...: 192.168.1.254

    DHCPv6 IOOKING...: 320868474

    DHCPv6 DUID customer...: 00-01-00-01-16-A6-EF-8E-2C-41-38-5C-76-B6

    DNS servers...: 192.168.1.254

    NetBIOS over TCP/IP...: enabled

    Ethernet connection to the Local network card:

    The connection-specific DNS suffix. : att.net

    Description...: Realtek PCIe GBE Family Controller

    Physical address.... : 2C-41-38-5C-76-B6

    DHCP active...: Yes

    Autoconfiguration enabled...: Yes

    IPv6 address: 2602:306:cdb8:5300:584d:2ddf:6 a 08: f6a7 (Preferred)

    Temporary IPv6 address...: 2602:306:cdb8:5300:575:56e9:298d:9097 (Preferred)

    Address IPv6 local link...: fe80::584d:2ddf:6 a 08: f6a7% 11 (Preferred)

    IPv4 address: 192.168.1.71 (Preferred)

    ... Subnet mask: 255.255.255.0.

    Lease obtained...: Sunday, April 22, 2012 23:29:32

    End of the lease...: Monday, April 23, 2012 23:29:32

    ... Default gateway. : fe80::42b7:f3ff:fec9:a2e0% 11

    192.168.1.254

    DHCP server...: 192.168.1.254

    DHCPv6 IOOKING...: 237781304

    DHCPv6 DUID customer...: 00-01-00-01-16-A6-EF-8E-2C-41-38-5C-76-B6

    DNS servers...: 192.168.1.254

    NetBIOS over TCP/IP...: enabled

    Tunnel adapter isatap. {38655146-6231-4777-AB1C-2DC12E0017FD}:

    State of the media...: Media disconnected

    The connection-specific DNS suffix. :

    ... Description: Microsoft ISATAP adapter

    Physical address.... : 00-00-00-00-00-00-00-E0

    DHCP active...: No.

    Autoconfiguration enabled...: Yes

    Card tunnel Local Area Connection * 9:

    State of the media...: Media disconnected

    The connection-specific DNS suffix. :

    ... Description: Microsoft 6to4 card

    Physical address.... : 00-00-00-00-00-00-00-E0

    DHCP active...: No.

    Autoconfiguration enabled...: Yes

    Tunnel adapter ISATAP.att.NET:

    State of the media...: Media disconnected

    The connection-specific DNS suffix. : att.net

    ... Description: Adapter Microsoft ISATAP #2

    Physical address.... : 00-00-00-00-00-00-00-E0

    DHCP active...: No.

    Autoconfiguration enabled...: Yes

    Card tunnel Teredo Tunneling Pseudo-Interface:

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    We are pleased to know that the problem is solved.
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