DNS Server Not Responding on Windows 7 - 0 views
started by Roman Holt on 19 Apr 12
started by Roman Holt on 19 Apr 12
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started by Roman Holt on 19 Apr 12
3. Check your connectivity by pinging several Internet sites. If that does not work, ping the loopback address 127.0.0.1. If that fails, your adapter may not be working or it is not properly configured.
To check your IP address. From command prompt enter ipconfig /all (as shown in the picture) you should see an IP Address and several DNS Server addresses. The domain name system (DNS) is the way that Internet domain names are located and translated into IP addresses and is required for browsing the Internet.
Ping 127.0.0.1 - loopback Test (as shown in the picture). The loopback test is used to check if the IP stack is responding. If it times out or you get an error the problem may occur if any one or more of the following conditions is true:
If you are still unable to connect to the Contivity VPN Switch, open a Command Prompt and try pinging the Contivity VPN Switch using the host name or address that you specified in the Destination field.
(a) If you receive a "Destination Unreachable error" there is a routing problem at the ISP.
(b) If you receive a "Request Timed Out" error message, the Contivity VPN Switch is probably not available, and you should contact your Network Administrator.
4. If you keep getting this message and are unable to connect, then it may indicate that the Contivity VPN Switch is unable to communicate with the client because it is behind some kind of NAT (Network Address Translation) device. NAT (Network Address Translation) Traversal allows a number of devices on a private network to access the Internet simultaneously without each requiring its own external IP address. Most hotels and airports that provide Internet connectivity use NAT to connect to the Internet.
Q6 Error Message: Cannot Alter Routing Table
Cause: Message means the you the user, an application on your machine, or your ISP attempted to change the routing table via an ICMP redirect attempt and it was not successful. The client detects the attempt to make the change, determines it's a security breach and shuts down the client's connection. Any time you make a VPN connection, you cannot change the routing table, because the VPN Client views this as a security risk and you will get disconnected.
Some applications require an ICMP redirection in order to work such as a game or other third party software.
Action: If you receive this error and cant connect due to an ICMP redirect attempt, shut down any other applications you are using which may be causing the ICMP redirect attempt. If it is the ISP that is doing it, you will need to block the ICMP redirect request. You can identify that ICMP redirect has occurred, by seeing a message saying there has been an IP address routing table change.
Q7 Error Message: Receiving Banner Text Information
Cause: Message means you are experiencing a Banner Sock issue, and will see a window displaying the "Receiving Banner Text" message and then gets disconnected.
Actions:
1. Disable the firewall completely to test. This is a port 500 issue and often means that the you have a personal Firewall that is blocking port 500 or you have a router that does not support IPSEC pass-through, and the you are connecting to a VPN switch that does not have NAT Traversal enabled.
VPN Service