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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘DNS’ Category

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Fake Internet Connectivity for your Lab (Tricking NCSI) – via: Canberra Premier Field Engineering

Posted by jpluimers on 2013/06/21

If you ever wondered why how in Windows – as of Vista – the NCIS (network connection status indicator) determines if you have a valid internet connection, it is pretty simple, as both these pages explain:

NCIS depends on the msftncis.com domain (link to the checks from IntoDNS) and is for supporting Network Awareness in applications.

The probing is done in this order: Read the rest of this entry »

Posted in Captive Portal, DNS, Internet, Power User, Windows, Windows 7, Windows 8, Windows Server 2008, Windows Server 2008 R2, Windows Vista | Leave a Comment »

“same glue” dns: glue records

Posted by jpluimers on 2013/04/12

If you ever get “same glue” messages when checking your comains (a lot of sites fail this, see these intodns.com or viewdns.info searches), you might wonder what DNS glue is.

DNS glue is needed when you provide the NS and A records for a domain on a host within the domain itself.

From inside that domain, this works, but from the outside, nobody knows how to resolve servers in that domain.

You need to have the registrar of that domain put the glue A records for the nameservers, so from outside the domain, you can find the nameservers, and via the nameservers you can resolve other DNS entries in the domain.

A few more detailed explanations:

–jeroen

via:

Posted in DNS, Internet, Power User | Leave a Comment »

intoDNS: checks DNS and mail servers health

Posted by jpluimers on 2011/06/06

In the past, I used checkdns.net for testing of a domain was configured correctly (including DNS and MX settings).

However, checkdns.net seems to be down or dead.

Luckily, intoVPS (with VPS servers in Amsterdam (Netherlands), Atlanta (USA), Cluj-Napoca (Romania) and Fremont (USA)) started lauched intoDNS a few years ago, and it works at least as good as checkdns.net used to work.

–jeroen

via: intoDNS: checks DNS and mail servers health.

Posted in DNS, Internet, Power User | Leave a Comment »

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