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Windows 7: Some websites are not opened at all

28 Aug 2015   #11
GokAy

Windows 7 Ultimate x64 SP1
 
 

1- It doesn't matter the sequence as long as they are from the same DNS provider. Those servers are both from OpenDNS, you can change the order no problems. The DNS client (your PC) will ask the first DNS server in list to make a name resolution, if that one can't answer for whatever reason (once a timeout has been reached) it will ask the second in the list. You can even have much more DNS servers (just not from that interface) if you click the Advanced button and switch to DNS tab.

2- Keep automatic or set manually: depends on your ISP I believe. My ISP servers are usually good working but I do sometimes change to manual if I feel/think ISP servers are not working great that day.

3- Wireless or Wired doesn't change anything with respect to networking, it is the same setting, same interface.

4- When you set DNS to automatic what IP does it get for DNS servers? (ipconfig -all in cmd will show everything) DNS system is distributed (a server asks another one upstream when it can't resolve a query itself, the link I gave earlier describes this in detail). It is possible (temporarily) that your DNS server was unable to resolve some other sites but was working ok for Google services. Simply changing DNS servers usually fix this kind of problems.


My System SpecsSystem Spec
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28 Aug 2015   #12
Hadramawt

Windows 7 Home Premium 64Bit
 
 

Quote   Quote: Originally Posted by GokAy View Post
1- It doesn't matter the sequence as long as they are from the same DNS provider. Those servers are both from OpenDNS, you can change the order no problems. The DNS client (your PC) will ask the first DNS server in list to make a name resolution, if that one can't answer for whatever reason (once a timeout has been reached) it will ask the second in the list. You can even have much more DNS servers (just not from that interface) if you click the Advanced button and switch to DNS tab.
Thank you very much indeed for your quite excellent explanation.

I am perplexed in particular when you said It doesn't matter the sequence of DNS server addresses to be entered in the Preferred/alternative DNS server boxes. My ISP is not in the area where OpenDNS is used. As far as I know that OpenDNS is linked some areas in the world and not worldwide. So, I think entering sequence of my DNS sever addresses should not be guessed. As a result, I insist on knowing as to which I can enter the sequence. If you look at my screen shots below, perhaps you will know.





Quote:
4- When you set DNS to automatic what IP does it get for DNS servers? (ipconfig -all in cmd will show everything) DNS system is distributed (a server asks another one upstream when it can't resolve a query itself, the link I gave earlier describes this in detail). It is possible (temporarily) that your DNS server was unable to resolve some other sites but was working ok for Google services. Simply changing DNS servers usually fix this kind of problems.

Some websites are not opened at all-settings-running-command-ipconfig-all.jpg
Some websites are not opened at all-webfig-192.168.88.1.jpg

1- As I said before OpenDNS is not used in my Area. So, What DNS provider do you think is mine? Is my MikrTik router is my DNS provider???

2- If you would be saying that my automatically DNS server address is '192.168.88.1', I would be saying this is the admin ip address of my MikroTik router with which I can access to the WebFig of my router. As a result, this DNS sever address doesn't do anything with my ISP. However, it is related to my Router manufacturer.

3- I have linked between 'automatic DNS severer address' in the left and right parts in the first screen shot shot above to let you see that the DNS server address '192.168.88.1' is not the automatic DNS severer address since it was not obtained automatically. However, it was prepared by the factory who made the router since I have known it even before running the command 'ipconfig'. It was written on the package cover of the Mirotik router.

3- I'm stumped by the results of ipconfig command, and the typing in '192.168.88.1' in the address bar. So, If you have made a comparison between the the first and second screen shots above, you will be finding out in the first screen shot that
IPv4: 192.168.88.254
Default Gateway: 192.168.88.1
DNS servers: 192.168.88.1


However, in settings in the second screen shot above was gotten by typing '192.168.88.1' in the address bar.
IP Address: 10.100.55.235
Gateway: 10.100.48.1
IP Address: 192.168.88.1

*What are the IP addresses in the second screen shot for?
*Why are the Gateway results different in the two screen shots?


My System SpecsSystem Spec
28 Aug 2015   #13
carwiz

Windows 7 Pro-x64
 
 

Perhaps it was related to this problem: Level3 suffering major outages; effects are felt worldwide
My System SpecsSystem Spec
.

29 Aug 2015   #14
GokAy

Windows 7 Ultimate x64 SP1
 
 

For your new questions:
1- You can use OpenDNS from anywhere on the globe. What might happen is that if you are too far away from those servers, the replies will take longer. This happens on your first query and any subsequent ones to already queried sites will be read from the cache. Your router is set as the DNS server, yes but it is still relaying your DNS queries to your ISP's DNS servers. Some routers don't have a DNS server of their own and assign the ISP servers directly via DHCP (my cable modem/router for example assign ISP servers instead of the router).

2- See answer 1, it is still asking the ISP servers. Open your router management interface and look for a DNS page/section. It should be telling you which DNS servers are set.

3- It is hard to say much without seeing the router interface but that is indeed the automatic DNS server, as said above. When you say automatic it means that the PC gets it automatically regardless of if you set a manual DNS server or get it from ISP on the router. Mind you some of these settings are not available for all router models.

4- Nothing surprising in those network settings. It looks like your ISP is using NAT (Network Address Translation) instead of assigning proper Internet IPs. 10.0.0.0 network is another private IP range just like 192.168.0.0 network.

Your PC is getting an IP address of 192.168.88.254 from the DHCP server of router. And router's LAN interface is set as 192.168.88.1, so your PC's gateway is also 192.168.88.1.

Whereas the external interface of your router (WAN) gets the IP from your ISP's DHCP server, and is assigned 10.100.55.235 and the ISP router on the other side has an IP address of 10.100.48.1 (gateway).

So, when your PC needs to reach an IP address unknown to it, it sends the packets to its gateway which is your router. Then the router "routes" the packet to the gateway of the ISP. That router then sends the packets to the next router etc.

Try running in cmd:
Code:
tracert www.google.com
this will show you all the routers that the packets will pass through until www.google.com is reached. (The routers for which the ICMP echo - which is the reply from ping command - has been closed will not reply back so a time out will occur, resulting in a asterisk char *)

For example mine looks like this, yours will be different:
Code:
C:\Users\Gokhan>tracert www.google.com
Tracing route to www.google.com [216.58.213.36]
over a maximum of 30 hops:
  1     *       <1 ms    71 ms  192.168.0.1
  2     *        *        *     Request timed out.
  3     *        *        *     Request timed out.
  4    14 ms     9 ms     9 ms  172.25.43.25
  5     *       13 ms    10 ms  212.156.38.21.static.turktelekom.com.tr [212.156.38.21]
  6     *        *        *     Request timed out.
  7     *        *        *     Request timed out.
  8     *        *        *     Request timed out.
  9     *       63 ms     *     72.14.197.174
 10    61 ms    61 ms    61 ms  209.85.245.23
 11    71 ms    61 ms    62 ms  216.239.48.38
 12    64 ms    63 ms    57 ms  66.249.95.66
 13    57 ms    58 ms    58 ms  64.233.175.184
 14    59 ms    59 ms    59 ms  216.239.41.129
 15    72 ms    64 ms    64 ms  ber01s15-in-f4.1e100.net [216.58.213.36]
Trace complete.
My System SpecsSystem Spec
03 Sep 2015   #15
Hadramawt

Windows 7 Home Premium 64Bit
 
 

Quote   Quote: Originally Posted by GokAy View Post

2- See answer 1, it is still asking the ISP servers. Open your router management interface and look for a DNS page/section. It should be telling you which DNS servers are set.

Thank you so much indeed,

The Dynamic DNS Servers of my router management interface are:
Some websites are not opened at all-dynamic-dns-servers-my-router-management-interface.jpg


When pressing on the 'static' button, then the DNS Servers of my router management interface are as follows:
Some websites are not opened at all-static-dns-servers-my-router-management-interface.jpg

So, which DNS servers are set? I don't see the automatic DNS server. All what I have been seen are :
Dynamic DNS Servers:
82.114.160.37
82.114.160.39

And when pressing on 'static' button, then the address '192.168.88.1' is shown.







Quote   Quote: Originally Posted by GokAy View Post
So, when your PC needs to reach an IP address unknown to it, it sends the packets to its gateway which is your router. Then the router "routes" the packet to the gateway of the ISP. That router then sends the packets to the next router etc.

Try running in cmd:
Code:
tracert www.google.com
this will show you all the routers that the packets will pass through until www.google.com is reached. (The routers for which the ICMP echo - which is the reply from ping command - has been closed will not reply back so a time out will occur, resulting in a asterisk char *)
I have run the CMD as an admin, then I run the command.

This is shown

Some websites are not opened at all-result-running-command-tracert-wee.google.com-.jpg

While it is out of my topic here, but for my curiosity, how could you copy the result of running the command 'tracert Google' in your 'cmd' ? I have seen that you have pasted the result of running the command tracert 'www.google.com' as a code or and not as screen shot? The command 'tracert Google' transfer the result to your account at 'google.com'. So, you have copied from there. Or what else is there?


My System SpecsSystem Spec
03 Sep 2015   #16
UsernameIssues

W7 Pro SP1 64bit
 
 

Quote   Quote: Originally Posted by Hadramawt View Post
~~~While it is out of my topic here, but for my curiosity, how could you copy the result of running the command 'tracert Google' in your 'cmd' ? I have seen that you have pasted the result of running the command tracert 'www.google.com' as a code or and not as screen shot? The command 'tracert Google' transfer the result to your account at 'google.com'. So, you have copied from there. Or what else is there?
Right click in the blue title bar.
Select Properties from the context Menu.

Once the Properties dialog box opens...
...select (if need be) the tab named Options.

On the right side of the dialog box...
...put a check beside Quick Edit Mode.


Before leaving the Properties dialog box...
...make the tab named Layout look like this:

Some websites are not opened at all-cmd.png

"OK" your way out. I think that the settings are stored with the shortcut that started the cmd window. If you start another cmd window via other means, you might need to repeat the settings.

You should now be able to Click and Drag your mouse to highlight some or all of the text in the command prompt window. Once the text of interest has been highlighted, release the left mouse click that was used to select the text and press the right mouse click one time. That puts the info into the Windows clipboard. Paste it as desired.

If you need to paste info from the Windows clipboard into a command prompt window, just right click inside the command prompt window.

The Quick Edit Mode also allows you to drag/drop a file from Windows (file) Explorer* into the command prompt window. Doing this should paste the path to the file into the command prompt window. If that path has a space in it, the paste operation will automatically add quotes around the path.

*this does not work if the command prompt window is running as admin and Windows (file) Explorer is running in the normal mode (with the User Account Control turned on). This process isolation is a good example of part of the Windows security model. If you operate with the UAC turned off, you lose a lot of those security features.


My System SpecsSystem Spec
04 Sep 2015   #17
GokAy

Windows 7 Ultimate x64 SP1
 
 

Hmm, the quick edit mode is interesting, didn't know about it. I use the conventional method:

Right click anywhere on the cmd window and select "Mark", then left click select the portion to be copied (it will highlight in White). Once done, click right click once anywhere in the highlighted space. It is copied to clipboard now, you can paste anywhere.

I use CODE tag so the text looks readable.

Now coming to DNS issue: Dynamic DNS is something else, it is used to make your servers reachable with a meaningful DNS name when you have a dynamic IP (hence it changes every once in a while).

Every router has its settings under a different name so I can't guide you directly there to the DNS settings. You have to check those pages. 192.168.88.1 is your router, apparently it is querying another DNS server.
My System SpecsSystem Spec
22 Sep 2015   #18
Hadramawt

Windows 7 Home Premium 64Bit
 
 

Quote   Quote: Originally Posted by UsernameIssues View Post
Quote   Quote: Originally Posted by Hadramawt View Post
~~~While it is out of my topic here, but for my curiosity, how could you copy the result of running the command 'tracert Google' in your 'cmd' ? I have seen that you have pasted the result of running the command tracert 'www.google.com' as a code or and not as screen shot? The command 'tracert Google' transfer the result to your account at 'google.com'. So, you have copied from there. Or what else is there?
Right click in the blue title bar.
Select Properties from the context Menu.

Once the Properties dialog box opens...
...select (if need be) the tab named Options.

On the right side of the dialog box...
...put a check beside Quick Edit Mode.


Before leaving the Properties dialog box...
...make the tab named Layout look like this:

Attachment 370634

"OK" your way out. I think that the settings are stored with the shortcut that started the cmd window. If you start another cmd window via other means, you might need to repeat the settings.

You should now be able to Click and Drag your mouse to highlight some or all of the text in the command prompt window. Once the text of interest has been highlighted, release the left mouse click that was used to select the text and press the right mouse click one time. That puts the info into the Windows clipboard. Paste it as desired.

If you need to paste info from the Windows clipboard into a command prompt window, just right click inside the command prompt window.

The Quick Edit Mode also allows you to drag/drop a file from Windows (file) Explorer* into the command prompt window. Doing this should paste the path to the file into the command prompt window. If that path has a space in it, the paste operation will automatically add quotes around the path.

*this does not work if the command prompt window is running as admin and Windows (file) Explorer is running in the normal mode (with the User Account Control turned on). This process isolation is a good example of part of the Windows security model. If you operate with the UAC turned off, you lose a lot of those security features.
Quote   Quote: Originally Posted by GokAy View Post
Hmm, the quick edit mode is interesting, didn't know about it. I use the conventional method:

Right click anywhere on the cmd window and select "Mark", then left click select the portion to be copied (it will highlight in White). Once done, click right click once anywhere in the highlighted space. It is copied to clipboard now, you can paste anywhere.

I use CODE tag so the text looks readable.
Thank you both of you very much indeed,
That's been very interesting.
Do you have any comprehensive guide to learn more about using CMD.
Code:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>tracert www.google.com

Tracing route to www.google.com [216.58.209.228]
over a maximum of 30 hops:

  1     1 ms     3 ms    <1 ms  router [192.168.88.1]
  2  2505 ms   796 ms   849 ms  10.100.176.1
  3   823 ms   766 ms   902 ms  82.114.160.1
  4   785 ms   875 ms   769 ms  82.178.159.141
  5   747 ms   683 ms   539 ms  82.178.159.10
  6   885 ms   748 ms     *     209.85.143.118
  7   816 ms   838 ms   816 ms  72.14.232.78
  8   705 ms   779 ms   694 ms  216.239.40.210
  9   708 ms   807 ms   732 ms  216.239.40.182
 10   871 ms   876 ms   735 ms  216.239.42.36
 11   719 ms     *      750 ms  72.14.239.230
 12   841 ms     *      857 ms  209.85.250.171
 13   727 ms   901 ms   694 ms  lhr08s05-in-f4.1e100.net [216.58.209.228]

Trace complete.

C:\Windows\system32>
Code:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

D:\Users\Mohammad>tracert www.google.com

Tracing route to www.google.com [216.58.209.228]
over a maximum of 30 hops:

  1     1 ms    <1 ms    <1 ms  router [192.168.88.1]
  2   722 ms   715 ms   691 ms  10.100.176.1
  3  2026 ms   822 ms   743 ms  82.114.160.1
  4   792 ms   743 ms   744 ms  82.178.159.141
  5  2943 ms     *      770 ms  82.178.159.10
  6   815 ms   795 ms   796 ms  209.85.143.118
  7     *     2365 ms   851 ms  72.14.232.78
  8   866 ms   873 ms   851 ms  209.85.243.108
  9   838 ms   878 ms   831 ms  74.125.37.150
 10   993 ms   669 ms   870 ms  216.239.41.101
 11   906 ms     *     1818 ms  72.14.239.230
 12   864 ms   851 ms   850 ms  209.85.250.171
 13   848 ms   795 ms   823 ms  lhr08s05-in-f228.1e100.net [216.58.209.228]

Trace complete.

D:\Users\Mohammad>
Quote:
I think that the settings are stored with the shortcut that started the cmd window. If you start another cmd window via other means, you might need to repeat the settings.
I didn't have to repeat the settings again if I would start another cmd window.
My System SpecsSystem Spec
29 Sep 2015   #19
Hadramawt

Windows 7 Home Premium 64Bit
 
 

Quote   Quote: Originally Posted by GokAy View Post
Now coming to DNS issue: Dynamic DNS is something else, it is used to make your servers reachable with a meaningful DNS name when you have a dynamic IP (hence it changes every once in a while).

Every router has its settings under a different name so I can't guide you directly there to the DNS settings. You have to check those pages. 192.168.88.1 is your router, apparently it is querying another DNS server.


Thanks a lot,
So, those two screen shots posted before didn't tell you which DNS servers are set in my router?
I believe as frustrated as I cannot be able to explain things in plain language.


You answered below my question ::: - If you would be saying that my automatic DNS server address is '192.168.88.1', I would be saying this is the admin ip address of my MikroTik router with which I can access to the WebFig of my router. As a result, this DNS sever address doesn't do anything with my ISP. However, it is related to my Router manufacturer.

Quote   Quote: Originally Posted by GokAy View Post
2- See answer 1, it is still asking the ISP servers. Open your router management interface and look for a DNS page/section. It should be telling you which DNS servers are set.

I concluded from those two screen shots that the Dynamic DNS Servers of my router management interface are: (first screen shot posted before)
Dynamic DNS Servers:
82.114.160.37
82.114.160.39


When pressing on the 'static' button, then the DNS Servers of my router management interface are as follows (second screen shot posted before). DNS Server address '192.168.88.1' is shown.


As a result, which DNS servers are set? I don't see the automatic DNS server. All what I have been seen are :
Dynamic DNS Servers:
82.114.160.37
82.114.160.39

And when pressing on 'static' button, then the address '192.168.88.1' is shown.
My System SpecsSystem Spec
29 Sep 2015   #20
GokAy

Windows 7 Ultimate x64 SP1
 
 

I can't say anything definitive as all routers have their own wording for stuff. I would need to see for myself. Normally Dynamic DNS is used for something else - https://en.wikipedia.org/wiki/Dynamic_DNS.

In cmd, try:
Code:
nslookup
server 82.114.160.37
google.com
If it returns the IP addresses then it is a DNS server you are probably connected to.
My System SpecsSystem Spec
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