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Author Topic: Your internet access may die on May 5th  (Read 13938 times)

broadstairs

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Re: Your internet access may die on May 5th
« Reply #15 on: April 15, 2010, 05:51:51 PM »

I've been doing some testing and get totally conflicting results, sometimes it works and says DNSSEC is not supported and most times it fails completely both manually or using the Java applet. The GRC program purports to test DNSSEC but report no errors. So I am probably just going to wait and see what happens.

Stuart
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ISP:TalkTalk Connection:FTTC Cab:ECI Router:Zyxel VMG3925

roseway

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Re: Your internet access may die on May 5th
« Reply #16 on: April 15, 2010, 06:54:22 PM »

Quote
The GRC program purports to test DNSSEC but report no errors.

I think that means that, as far as DNS Benchmark is concerned, your DNS service is good. I gathered from their documentation that, if a server being tested didn't support DNSSEC, then it was likely to choke on the test, and you would have got a message to that effect.
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  Eric

tonyappuk

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Re: Your internet access may die on May 5th
« Reply #17 on: April 15, 2010, 07:36:03 PM »

Thanks for your response Eric. I will investigate and fiddle a bit more but I am glad to see I am not alone in my confusion. And here was I thinking I was fairly computer literate!
Tony
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jeffbb

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Re: Your internet access may die on May 5th
« Reply #18 on: April 15, 2010, 08:31:22 PM »

Hi

No apparent problem with DNS Benchmark .

But  Replysizetest reports that

Your resolver announced a buffer size bigger than the largest packet that it
can receive    This scenario can cause problems for a resolver,


It reports the

The most common causes are firewalls which block DNS packets bigger than 512 bytes, or fragmentation,
which causes a large DNS packet to be broken up into smaller fragments which routers and/or firewalls don't know how to handle.

if your announced buffer size is the default of 4096 bytes, and the measured buffer size is much smaller (say 1400 bytes),

it does  :(

 We recommend that you configure your network, routers and firewalls to handle larger packets and/or fragments.


? how is this done all double Dutch to me

using Commodo firewall
and DG834 GT  router

Regards Jeff
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zen user

broadstairs

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Re: Your internet access may die on May 5th
« Reply #19 on: April 15, 2010, 11:53:57 PM »

Well I decided to try the TalkTalk DNS servers since I'm with them and they come out as EDNS and DNSSEC both supported with announced buffer of 4096 and actual of 3839 which is within the 300 bytes allowed. Surprised me a bit since TT often get a bad press so I was expecting them to fail!

Stuart
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roseway

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Re: Your internet access may die on May 5th
« Reply #20 on: April 16, 2010, 07:17:37 AM »

Quote
buffer of 4096 and actual of 3839 which is within the 300 bytes allowed

Those figures are exactly the same as I get with vnsc (4.2.2.3 and 4.2.2.5).
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  Eric

jeffbb

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Re: Your internet access may die on May 5th
« Reply #21 on: April 16, 2010, 03:24:58 PM »

Hi
Yesterday when I tested 212.23.3.100 and 212.23.6.100 (ZEN) they both gave

announced buffer 4096 and  measured buffer size  1399 both had DNSSEC enabled .

Today

211.23.3.100 shows announced buffer 4096 and  measured buffer size  3839 bytes  this I understand is OK  :)

211.23.6.100 still shows announced buffer 4096 and  measured buffer size  1399 bytes but this is not OK :(
It still showing DNSSEC enabled

Regards Jeff



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roseway

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Re: Your internet access may die on May 5th
« Reply #22 on: April 16, 2010, 04:48:29 PM »

I'm afraid I don't understand the details at all, but Zen obviously know what they're doing, and it looks as though they are increasing the buffer size as a result of the testing they've been doing.
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  Eric

tonyappuk

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Re: Your internet access may die on May 5th
« Reply #23 on: April 16, 2010, 08:21:42 PM »

I have now changed my DNS servers to be the pair that Plusnet offer as their preferred and alternate. It does seem that website loading is faster which is gratifying and at least I haven't broken anything. However if I do another Replysizetest it says DNSSEC is not enabled by these servers and the buffer/packet sizing is still too small. I think I will wait until after 5th. May and see what happens. Plusnet will surely have to get it right by then.
Tony
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jeffbb

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Re: Your internet access may die on May 5th
« Reply #24 on: April 29, 2010, 11:24:43 PM »

Hi
May 5th fast approaching  ::)

Checked today and now Both my dns resolvers are OK :)

Regards Jeff
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zen user

roseway

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Re: Your internet access may die on May 5th
« Reply #25 on: April 30, 2010, 07:21:48 AM »

Excellent :)
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  Eric

BritBrat

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Re: Your internet access may die on May 5th
« Reply #26 on: April 30, 2010, 12:20:15 PM »

Ours may die but not for that reason.

They are going to move a WW2 bomb past our house to explode it is a safer area than it is at the moment.

We have had police notices about having bags packed ready for evacuation.
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UncleUB

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Re: Your internet access may die on May 5th
« Reply #27 on: April 30, 2010, 12:32:57 PM »



They are going to move a WW2 bomb past our house to explode it is a safer area than it is at the moment.


What about here...
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UncleUB

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Re: Your internet access may die on May 5th
« Reply #28 on: May 08, 2010, 06:40:06 PM »

Well its past 5th May and I'm still here......are you ?  ;D
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silversurfer44

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Re: Your internet access may die on May 5th
« Reply #29 on: May 08, 2010, 06:58:23 PM »

I've just had a look and yes I'm still here.  :crazy:
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Colin II : It's no good being a pessimist, it wouldn't work anyway.
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