Time to time problems after removing unblockus service (DNS)

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Level 1

12 points

Time to time problems after removing unblockus service (DNS)

I have a router from my operator and an Airport Extreme.

After removing the unblockus(.com) DNS service (by simply deleting the DNS settings they provided), I now have problems with my router and Internet connections (Airport Extreme probably).

I have tried resetting the AE.

But I still get errors when trying to reconnect my e-mail accounts in Mail (Error message: Too many simultaneous connections. (Failure).)

And some web sites won't open, or they only appear as plain HTML text (not code).

My settings on the AE are:

Internet:

Connected with: DHCP

DNS: 192.168.1.1

Network:

Route mode: Bridge mode off

(Sorry, my settings are in Norwegian so I had to try to translate directly).

Is there a standard setting I can use?

Btw, I have 2 external drives connected to the Airport Extreme. The communication to them are ok throughout the network.

The strange thing about these problems is that the router/network works great after I have reset the router. But after weeks(?) the trouble is back again.

Any clue?

AirPort Extreme 802.11n (5th Gen)

Posted on Apr 16, 2014 2:43 PM

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Answer 1

Best reply

LaPastenague

Level 9

67,202 points

Apr 16, 2014 3:24 PM in response to Lillianw83

I doubt your change of setup is a problem.. if it was it would happen all the time and not once a week.

It is just normal Apple firmware causing problems.

Whenever you change setup it is well worth doing a full factory reset of the AE.

But before you do that.. if you run 7.6.4 firmware downgrade it to 7.6.1 as a test if you like. But it does seem to be more stable.

So downgrade firmware by holding the option key whilst clicking the version in the summary page of the airport utility (assuming you are using v6).

Select the firmware you want,, ie 7.6.1 and it will proceed to change the firmware to what you selected.

Then factory reset.

The Factory Reset TC Gen1-4. Or AE Gen1-5

Unplug your TC/AE. Hold in reset. and power the TC/AE back on.. all without releasing reset and keep holding in for about 10sec.

Release it when the status light flashes rapidly. If it doesn’t flash rapidly you have missed it and try again.

Be Gentle! Feel the switch click on. It has a positive feel.. add no more pressure after that.

TC/AE will reboot after a couple of minutes with default factory settings and will wipe out previous configurations.

No files are deleted on the hard disk.. No reset of the TC deletes files.. to do that you use erase from the airport utility.

I also strongly recommend you setup again with short names, no spaces and pure alphanumeric.. not the apple names as recommended by apple setup wizard. Particularly with Mavericks this can help.

But in the end you might still need to do a weekly reboot.. because Mavericks and even all the way back to Lion have some real network bugs.. they simply forget where the airport lives. Even if they have internet through it.

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Answer 2

Lillianw83 Author

Level 1

12 points

Apr 16, 2014 5:14 PM in response to LaPastenague

Thanks! I did what you suggested; downgraded and resetting the AE. But it did not work. I have no trouble being online, but Safari and App Store won't load as they should.

So I changed the "router mode" to "DHCP and NAT". That is the only way I could get online long enough to write you. But there is an error:

"This base has a private IP address for the Ethernet WAN port. The base station is connected to a device or a network that uses NAT to Liver private IP addresses. Change the Airport base station to use DHCP and Nat to bridge mode."

I have tried bridge mode, but it did not help.

I am running out of clues here....

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Answer 3

Apr 16, 2014 5:37 PM in response to Lillianw83

Since the downgrade failed there has been no change. You can try the downgrade again. But first see if you can get the network operating correctly.

Do another factory reset.

Put the AE back into bridge mode.. do not forget to reboot the whole network after you make any substantial changes.

With all network stuff in your home off.. power on the modem.. wait 2min.

Power on the AE.. wait 2min.

Power on the rest of the clients.

See how it goes now.

If you still have issues.. plug the computer directly into the modem router.. and see if that works as it should.

What modem router is it??

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Answer 4

Lillianw83 Author

Level 1

12 points

Apr 17, 2014 4:15 AM in response to LaPastenague

Finally, I think it worked!! Rebooting the whole network seemed to be the solution. THANK YOU AUSTRALIA! 🙂

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Answer 5

Lillianw83 Author

Level 1

12 points

Apr 17, 2014 11:06 AM in response to LaPastenague

I take it back! 😐 Several websites will not load anymore! Back to scratch. I rebooted everything as you said. It worked for 12 hours.

Are you sure it's got nothing to do with the DNS? Because some web sites loads, and some don't. And if I change computer, the web site that did not load on one computer, will load on the other.. For now.. I do not get this....! It is as if the problem just grows to be bigger and bigger until nothing loads. It is weird.

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Answer 6

Apr 17, 2014 2:28 PM in response to Lillianw83

The fact you used unblockus at some point is really not relevant to your current problem. I think you are confusing things.

I need to work on the current setup of the network.

So I need to have full data about the TC. I need to have the mode it is working in.. and I want to see the IP gateway and dns settings it is running.. please do a screenshot again which shows that info.

Really good if you give me the summary tab like you did above.. and then click the edit and give me the internet tab.. plus network tab.

Particularly I need to see any errors the AE is showing.. eg double NAT.. double NAT will cause the problem you have now. The AE must be in bridge when plugged into a router.

And I need to see your computer network info that is having trouble.

So I want to see its IP address, gateway (apple call it router) and DNS values.

So here is mine.. nothing here is of security concern btw.

Please also your DNS page so I can see what the dns values are.

Also please open a teminal session and do a traceroute to the google dns, 8.8.8.8

Do a copy and paste of those values here as well.

So

$ traceroute 8.8.8.8

traceroute to 8.8.8.8 (8.8.8.8), 64 hops max, 52 byte packets

1 192.168.2.254 (192.168.2.254) 1.595 ms 4.595 ms 1.659 ms

2 adsl1.mel02.eftel.com (203.123.69.176) 26.001 ms 25.622 ms 25.326 ms

3 te0-0-0-306.core0.mel02.eftel.com (203.123.72.65) 25.709 ms 25.661 ms 25.465 ms

4 ve420.er01.mel01.eftel.com (14.137.114.25) 26.417 ms 29.320 ms 25.659 ms

5 eth2-1.bdr01.syd02.eftel.com (202.62.143.121) 35.613 ms 35.383 ms 47.953 ms

6 as15169.ve223-vpls138.bdr01.syd02.eftel.com (202.62.154.118) 36.738 ms 38.999 ms 36.951 ms

7 72.14.237.21 (72.14.237.21) 37.300 ms 35.993 ms 36.892 ms

8 google-public-dns-a.google.com (8.8.8.8) 36.557 ms 38.183 ms 36.334 ms

Again there is nothing here that is security concern.. you can see my router IP and that is all, and it is completely useless. The actual trace is going to be completely different at your end.. but it allows me to see if you have double NAT issues still.

One other thing you can do.. on a computer that is having trouble.. manually change the dns to 8.8.8.8 in the network preferences.. if that fixes it please tell me.

Finally remove the AE completely and see if the computer works ok plugged directly into the ISP modem / router.

(Sometimes I write TC ie time capsule instead of AE.. treat them as the same thing.. I am running both and use interchangeably.

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Answer 7

Lillianw83 Author

Level 1

12 points

Apr 24, 2014 8:26 PM in response to LaPastenague

Wow. Thank you so much for such detailed support and guide. I haven't been home lately and in the meanwhile Apple came with a resent update for the Airport software. You know, because of the hearbleed vulnerability? So I updated hoping it would create miracles. So for now the network seem stable. (Although I haven't been home to test it over time). If it acts unstable again...then I will take your advice to follow your guide and get back to you!

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