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Category Archives: Windows

How to change the interface metric from GUI?

Posted on June 11, 2013 by Muhamamd Zeeshan
9 comments

In my last post I told you how to change the interface metric from command line if your Ptcl smart tv is not working on your pc.

In this post I will tell you how to change the interface metric from GUI.

Open the windows network and sharing center.

open network and sharing center

Then click on the lan card you are using for multicast streaming.

open lan card properties

Read more …

Categories: internet, iptv, Networking, Windows | Tags: iptv, ptcl, smarttv, Tutorials, windows, windows 7, windows xp

IPv6 configuration items

Posted on November 30, 2011 by Muhamamd Zeeshan
1 comment

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

IPv6 configuration items

You can configure the following for the IPv6 protocol:

  • IPv6 address
  • Default router
  • DNS server

IPv6 address

By default, link-local addresses are automatically configured for each interface on each IPv6 node (host or router) with a unique link-local IPv6 address. If you want to communicate with IPv6 nodes that are not on attached links, the host must have additional site-local or global unicast addresses. Additional addresses for hosts are either obtained from router advertisements sent by a router or assigned manually. Additional addresses for routers must be assigned manually.

Default router

To communicate with IPv6 nodes on other network segments, IPv6 must use a default router. A default router is automatically assigned based on the receipt of a router advertisement. Alternately, you can add a default route to the IPv6 routing table. You do not need to configure a default router for a network that consists of a single network segment.

DNS server

You can use a Domain Name System (DNS) server to resolve host names to IPv6 addresses. When an IPv6 host is configured with the address of a DNS server, the host sends DNS name queries to the server for resolution. AAAA (quad-A) resource records, which are stored on your DNS servers, enable mapping from a host name to its IPv6 address.

To enable DNS name resolution, configure an IPv6 router with forwarding enabled and a global prefix that is advertised to clients. You can do this by using the netsh interface ipv6 add route and netsh interface ipv6 set interface commands.

Configuring clients with the DNS server address

To provide communication between DNS clients and servers, you can configure the clients with the IPv6 address of the DNS server, or you can configure your DNS server with one of the three default DNS server IPv6 addresses that are automatically configured on all IPv6 clients.

You can configure clients with the IPv6 address of the DNS server by using the netsh interface ipv6 add dns command at each client computer or in a logon script that is run each time a client logs on to the network.

To configure the DNS server with one of the three IPv6 addresses that are available on IPv6 client computers by default, use the netsh interface ipv6 add address command. The three default DNS server addresses are:

  • FEC0:0:0: FFFF::1
  • FEC0:0:0: FFFF::2
  • FEC0:0:0:FFFF::3

If your DNS server is on a different subnet than your IPv6 clients, configure a static route to the DNS server on any IPv6 router that is available on the DNS server’s subnet.

Configuring the DNS server to listen on IPv6

You can configure the DNS server to listen for DNS name registration and resolution requests over IPv6. When your DNS server is configured to listen on both IPv4 and IPv6:

  • Devices that function over IPv6 but not IPv4 will function properly with your DNS server.
  • Computers and other devices that are configured with both IPv4 and IPv6 use IPv6 by default.

To configure your DNS server to listen over IPv6, do the following:

  1. Install Windows Support Tools.

    For more information, see Install Windows Support Tools

  2. Open Command Prompt.
  3. Type the following command:

    dnscmd /config /EnableIPv6 1

  4. Restart the DNS Server service.

 

source microsoft

Categories: ipv6, Networking, Windows | Tags: cisco, ipv6, networking, windows

Logon failure: unknown username or bad password.” when trying to access Windows XP share from Windows 7

Posted on October 8, 2011 by Muhamamd Zeeshan
9 comments

After a recent Windows Update I could no longer access the folders on my Windows XP file server. A window popped up asking for a username and password even though they are both the same on the two computers. The error message each time was “Logon failure: unknown username or bad password.”

I typed in my username and password five times. It reached the point where I thought I had gone crazy and was typing in the wrong one: it kept on coming back to me with the dreaded “Logon failure: unknown username or bad password.”.

I quickly returned to my senses and guessed something was up with the authentication between XP and Windows 7. A few Google searches later I found out that a Local Security Policy needs changing.

  • Open the Start menu
  • Type “Local Security Policy” in the search box
  • Open Local Security Policy
  • Navigate to “Local Policies” -> “Security Options” and then locate the entry named “Network security: LAN Manager authentication level”. Double click on it.
  • In the dropdown list choose “Send LM & NTLM – use NTLMv2 session security if negotiated
  • Click OK

It seems that a recent Windows Update has changed that policy’s settings to be undefined, which —from what I can tell— forces NTLMv2 session security always. My XP installation mustn’t have NTLMv2 capability and that is why I kept seeing “Logon failure: unknown username or bad password.” errors.

After changing the local policy I was immediately able to connect to my network shares again.

Categories: Windows | Tags: bad username password, windows, windows 7, windows xp
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