FreeStone Blog » dns http://blog.freestone.net What goes on at FreeStone ... Thu, 02 Feb 2012 06:35:55 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Test if your nameservers are ready for DNSSEC http://blog.freestone.net/index.php/2010/05/04/test-if-your-nameservers-are-ready-for-dnssec/ http://blog.freestone.net/index.php/2010/05/04/test-if-your-nameservers-are-ready-for-dnssec/#comments Tue, 04 May 2010 00:17:11 +0000 Matthias Cramer http://blog.freestone.net/?p=55 DNSSEC replies are much bigger than traditional DNS answers. Typical DNS replies fit into the 512byte standard UDP DNS Packet. So if they get bigger we need EDNS Support. To test if your DNS Servers can succesfully forward bigger packages you can do this with the following command:

dig +short rs.dns-oarc.net txt

If should then output something like this:

rst.x3827.rs.dns-oarc.net.
rst.x3837.x3827.rs.dns-oarc.net.
rst.x3843.x3837.x3827.rs.dns-oarc.net.
"193.5.68.11 DNS reply size limit is at least 3843"
"193.5.68.11 sent EDNS buffer size 4096"
"Tested at 2010-05-04 00:08:52 UTC"

]]> http://blog.freestone.net/index.php/2010/05/04/test-if-your-nameservers-are-ready-for-dnssec/feed/ 0 Test your IPv6 connectivity http://blog.freestone.net/index.php/2010/05/03/test-your-ipv6-connectivity/ http://blog.freestone.net/index.php/2010/05/03/test-your-ipv6-connectivity/#comments Mon, 03 May 2010 15:51:42 +0000 Matthias Cramer http://blog.freestone.net/?p=53 Here is a very handy site that checks your IPv6 connectivity, including that of your DNS resolvers:

http://test-ipv6.com/

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