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DNS

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Solutions

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The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.

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We have setup a domain with company.com for our local active directory. After setting it up I entered a dns entry for www.company.com to go to the external web server IP address. the problem is that the Drupal Web server is doing something where it gets a response of 302 and redirects to company.com causing the client PC inside our domain to fail loading the page because it is trying to load a page from our domain controller.

I am not very familiar with Drupal but was wondering if the web developer could do something to allow it to stay as www.company.com instead of making it change to company.com and still allow the content to load? We did a test with test.company.com being entered in my AD DNS server as well as he mentioned he was able to allow test.company.com to not be redirected. When the page loads it is loading just text and basic HTML but non of the Images or Java script (I believe). I notice there is a bunch of http404 errors on the MS Edge console that seems to be referencing *****.js***** destinations using company.com. Would it be possible to update something on Drupal to make it reference something like www.company.com?

If I were to setup a new AD domain would it be best to make it company.local  or make a local.company.com. I would like to keep it as company.co, but have a feeling both the developer and myself are preferring. We will also be using office 365 AD Sync.
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I'm having a little problem and I hope you guys can assist me with it, I have 5 VLans --- this is the setup on PFsense

LAN-VL10-VL20 all use the dns resolver and is filtering web content via squid and pfblocker

VL30-VL50 uses the DNS forwarder on port 5353 and arpa back to Vl20 on ip address 192.168.20.1

Vl40 uses the ISP DNS and do not use the resolver or DNS forwarder - this is the guest network

The problem is Squid and PFblocker does not filter content on these three network  Vl30-Vl40 and Vl50

All these interface are selected in the interface section on squid and on PFblocker.

Any Assistants will be greatly appreciated
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Just found only a couple of 2012R2 servers suddenly cannot access two particular network shared storage servers (two Data Domain storage) using \\hostname with the following error:

\\hostname is not accessible. you might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions.
 This server's clock is not synchronized with the primary domain controller's clock.

Those servers are VMs among two Hyper-V hosts so they sync time with their hyper-V host. It's hard to believe if it is really a time related issue since all other 2012R2 servers on the same hyper-V hosts don't have this issue.
At the same time the couple of 2012R2 servers can access other network shared folders without a problem whereas other 2012R2 servers can access the two particular Data Domain storage servers without a problem.

The most strange thing is, if I use \\IP Address, I am able to access. It appears to be not a DNS issue since Ping -a hostname can result in its IP without a problem. Moreover, I did try putting the hostname and its IP in the hosts file, to no avail,

It seems like the issue coincides with some Windows update last month. The issue temporarily got fixed right after we installed all Windows update but the issue came back after 2 days. At this point, i'm kind of totally defeated. Can you help?
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Hi All,

query :   xyz> dig abc.com showing two pointing adresss

ie. answer section :   A 1.1.1.1  AND
                                   A  2.2.2.2

i am unable to find directory file where i can remove one entry .

tried following cat /etc/resolve.conf  and cat etc/bind/db  and cat /etc/bind/name and cat/etc/bind/ but nowhere showing that entry

in Ubuntu dns server.


can you folk help me to remove that 2.2.2.2 pointing .

-ANkush
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When I reboot a Windows 2008 R2 Server, the DNS Server Service is missing upon reboot.   I cannot add it via the mmc console either.

The only way to get it back is to Add the DNS Role, wait for it to error out, then I can see the DNS Server Service and DNS Server in Control Panel.

If I add the role , I wait for an error. I choose not to reboot and now my DNS Service appears and I can manage it and it works.

This is Windows Server 2008 R2.

More information, when the server restarts:

C:\Users\Administrator>sc query dns
[SC] EnumQueryServicesStatus:OpenService FAILED 1060:

The specified service does not exist as an installed service.
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I've tried to dig more into this and there was a kind of a smaller solution I figured out but after looking into it very close I see that it will be a problem in a long run so I'm trying to find the best way of getting let me say the list or all if possible internet web addresses, like if a new domain is registered I should also get it, my question is how can I find these, I know we may think crawling sites, but the reality now is that crawling sites will be something that wont be supported in a near future, that because I've also tried to check some sites that I wanted to crawl so that I can get more sites addresses to visit and crawl but people are now preventing crawling by hiding the addresses or links, like for instance a site that people post business ads for free, they hide the link that shows the full detailed ad details of the post by using some ad id which there script understands and dynamically loads the ad to the user, so crawling such sites require each custom site crawler after you have figured out how are they hiding this.

Bing, Google do find these information, how can I also find this information. I'm more interested in fining domains/sites urls.

Any one who can help on this?
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I'm trying to add an Exchange 2016 server to my infrastructure and to migrate everything there from an Exchange 2010 server. I'm following this tutorial: https://practical365.com/exchange-server/migrating-exchange-server-2016/

But I get stuck at the Client Access Name cutover since my DNS configuration seems to be different from the one in the tutorial.

So we've got an internal DNS server for our internal network, and an external DNS server (outside of our AD, of course) for our public addresses. But in the tutorial it seems like they're using the same domain name for internal and external purposes?

Anyway, my Outlook connects via RPC/TCP to the Exchange server using its internal name (serv-exchange.whatever.local). But I don't know where this has been configured? Can I force Outlook to use the external name (mail.mydomain.com)?

That would make the Client Access Name switch easier ... I'd just need to change the NAT on the firewall for mail.mydomain.com ... otherwise I would have to change the DNS config of the current Exchange server which would create all kinds of problems, I guess?

I've tested accessing the new Exchange 2016 server on a client with a modified HOSTS file (with serv-exchange.whatever.local pointing to the new Exchange 2016 server) and that works fine! But in order to do that on the level of the internal DNS I would have to point serv-exchange.whatever.local to the IP address of new Exchange 2016 server but then the connection to the current …
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I have a test server running 2012 R2 it's a clean installation  It's been upgraded to a domain controller and my clients can connect to it from their accounts in active directory from workstations.  I have the hyper-v role installed on the domain controller and I have created a virtual machine that I will install exchange 2013
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[/code] on.The problem is I can not get the exchange virtual machine to join the domain. This  is the error I receive:

Note: This information is intended for a network administrator.  If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\Windows\debug\dcdiag.txt.

The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "photonics.org":

The error was: "This operation returned because the timeout period expired."
(error code 0x000005B4 ERROR_TIMEOUT)

The query was for the SRV record for _ldap._tcp.dc._msdcs.photonics.org

The DNS servers used by this computer for name resolution are not responding. This computer is configured to use DNS servers with the following IP addresses:

192.168.5.7

Verify that this computer is connected to the network, that these are the correct DNS server IP addresses, and that at least one of the DNS servers is running.

The DNS server is running
The ipv4 settings on the exchange virtual …
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Having a problem with IIS to redirect URL to specific site.

Setup in IIS 8 :
servername:  webserver1
Sites in webserver1:  
* Default Site   :https port 443
* site2  :https port 2222
* site3  :https port 3333

I created A host DNS record named:  site2  that poiting to  webserver1

Problem+want to achieve:

when I type in URL:  https://site2  I want to reach the site2 that on port 2222
The problem is when I type now site2  I reach to the default web site on port 443 ranther than site2.   Of course If I type:  https://site2:2222 everything works fine.

How can I redirect so I'll only have to type  site2  and it will start the site2 over port 2222 ?
Installed URL rewrite and tried multiple pattern but nothing works as it always looks after the '/' not the hostname. should be simple talks

Thanks in Advance.
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Hello,

I have been trying to install vcenter 6.5 for 8 hours now and can't deply vcenter. When deploying vcenter it get stuck on installing RPM this may take serveral minutes and its at 80%.

I created a dns virtual machine and I added  vcenter and IP address in forward and reverse lookup and I tried to deploy vcenter and no luck. Can someone please tell me where to look?

and I also have a question....do I need to promote a domain controller and add the vcenter name inside Active directory before deplying? I did that and still no luck.

While vcenter was deplying I did see a error message saying timeout waiting for device dev-swap_vg-swap1.device
depend -dependency failed for /dev/swap_vg/swap1
depend - dependency failed for swap

In my opinion I think I just have something simple that is not in the right place.

Please help.
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I set up a server host OS and a VM in Hyper-V as a domain controller on a PC with a couple SSDs. When I got everything working, I cloned them over to a PowerEdge T330. Now my Hyper-V DC will not work with a static IP address. It cannot see the network PCs, ping out, or access the internet. If I set it to DHCP, I can access the internet, but nothing internal. I am at a loss as to why this is happening, however, I need to fix this as soon as possible. Does anyone have any ideas?
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Question we seem to be having dns issues today where we loose internet for a couple of seconds and then it comes back. Any idea why it would do this?
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Not able to access a dev site from the VPS server's ip address.  Hosting company says all configured correctly on the VPS and that I need to add the IP Address and domain to hosts file.
Is there a trick to updating hosts file on this Mac OS 10.13.6 version?  I've used sudo nano /etc/hosts added the server IP address and the domainname.com and ran the sudo killall -HUP mDNSResponder && echo macOS DNS Cache Reset.

Help with getting this working would be appreciated.
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I have a Forest level trust between two domains.  

From every server bar one in domain A I can add users from domain B to access folders in domain A.

On the server that I cant add users I can go to the security tab, edit, add, select domain b and see all users in domain B (so ldap is working) but when i select any user and hit ok i enetr domains B's admin credentials and i get a message saying the domain controller in domain B isn't available.

Works fine on all other servers in domain A

Any ideas?
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Experts-

Recently, like in the last two weeks or so, I've noticed a couple of my customer's servers (2012R2 & 2016) having DNS issues.  I'm not sure if it was a recent Windows Update patch or what.  The server functions fine after a reboot, then DNS just stops working.  All DNS services are running, it just does not return any data when requested...not even if the server itself tries to browse a website or even a local machine.  DNS has been working fine for years on these servers, so it's not a setup issue.  One is AT&T and one is Comcast, so probably not an ISP issue.  Once it stops working, the local clients can't even browse file shares (can't find the server).  I reboot the server and it works fine for ~1 week, then stops again.  Anyone else having this issue, heard this issue, seen this issue?  

Thanks all!

-Joe
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We have 2 domain controllers , DC01 and DC02. I have manullay deleted a DNS entry on DC01 and did a referesh and then all entries disappeared!. when checking the other DC02 , I can see the entries there?. Why it disappeared and how I can see them again on the DC01?
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hi,
dns3.jpgps assist why can't change dns ip address and apply register dns settings.
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I am in the process of getting an outdated server upgraded to a supported OS. Running VMWare 5.5 and we get getting a system off a Virtual Server 2003 x86, and upgrading it to the only available system possible a virtual Server 2008 x86. The original server is an application and file server. It has 3 IP addresses assigned to a single nick and the DNS has 2 of those IP's assigned to static FQDN's.
Here is where things get unusual...

When the original server is the one bound to the domain I can ping it from all of my systems. When the new computer is bound to the domain it will not respond to ping from only certain subdomains (inbound ICMP v4 & v6 are enabled for file and print sharing.. so it isn't the firewall).

The 2nd and 3rd IP's do not respond to any type of ping even though they show they are connected to the network. I have even tried changing the configuration by removing the 2nd and 3rd IP's from the one nic and giving them their own individual nic cards to see if they might respond from there. Again no such luck.

I am going crazy trying to get this to work properly but I can't seem to find a way to get the nic's to talk correctly, nor can I get them to respond to all of the subdomains that the original server had no issues responding to.

I am hoping that someone may have seen something like this before. I realize that an in place upgrade doesn't always resolve all issues but I've never seen something like this in any previous attempts.
Thank you in …
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hi,

Ps advivce. Tks

Event Type:      Error
Event Source:      DNS
Event Category:      None
Event ID:      4004
Date:            7/23/2018
Time:            4:30:45 PM
User:            N/A
Computer:      HQAD1
Description:
The DNS server was unable to complete directory service enumeration of zone inet.com.  This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it.  Check that the Active Directory is functioning properly and repeat enumeration of the zone. The extended error debug information (which may be empty) is "". The event data contains the error.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 2a 23 00 00               *#..



Event Type:      Error
Event Source:      DNS
Event Category:      None
Event ID:      4011
Date:            7/23/2018
Time:            4:30:45 PM
User:            N/A
Computer:      HQAD1
Description:
The DNS server was unable to add or write an update of domain name LTID16BSD1860AB in zone smrtnet.ads to the Active Directory.  Check that the Active Directory is functioning properly and add or update this domain name using the DNS console. The extended error debug information (which may be empty) is "". The event data contains the error.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
Data:
0000: 2a 23 00 00               *#..
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hi,

receiving alert with the following error for kind advvice. tks

Alert: Windows DNS - Active Directory Integrated Zone Operation Failed
Source: busplus.com.sg on HQAD1.SMRTNET.ADS
Path: HQAD1.SMRTNET.ADS;HQAD1.SMRTNET.ADS
Last modified by: SMRTTIBS\scomadmin
Last modified time: 7/24/2018 8:00:34 AM Alert description: Event ID: 4004
                        Event Source: DNS
                        Event Log: DNS Server

                        Event Description: The DNS server was unable to complete directory service enumeration of zone busplus.com.sg.  This DNS server is configured to use information obtained from Active Directory for this zone and is unable to load the zone without it.  Check that the Active Directory is functioning properly and repeat enumeration of the zone.
The extended error debug information (which may be empty) is "".
The event data contains the error.
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Windows Server 2008 R2. Joined as a member to the domain. It has all the IP,gateway, dns setup via Static. The machine can not access the Internet in anyway. Can not even PING anyone outside of the network. Everything on the internal network works fine, can ping the server, workstations etc. Everyone on the network can access the internet fine. Just this one machine. I have disabled the firewall. Removed all the anti virus products. Changed the DNS to point from the internal server to 8.8.8.8. The only error I am getting in the Event Logs is this.

Event ID 1014
Source DNS Client Events

Name resolution for the name 192.in-addr.arpa timed out after none of the configured DNS servers responded.


Not sure what else to try from here.

Thanks for the help!
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how to add intra url to dns? (from samba domain controller on ubuntu)
i have url like             server:8090/login.action.
how to create an entry on dns to just write confluence then remap to that address.
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Hi Experts,

I am having a problem with my Cisco 897VA router and allowing access to internal servers from internal devices.

Any attempted access gets a not authorised response.  We can access it via IP or if placed in the host file on the user pc.  There is no issues accessing from external devices.

This however is a pain to do.  I do not wish to modify my internal DNS server at this stage or run a separate one for just one zone as this was working fine under a previous router, this has just happened since switching to the 897va.

Server we want to access has internal IP of : 192.168.0.254
External IP is: 114.xxx.xxx.153

This is my current sanitized running config:

Current configuration : 10024 bytes
!
! Last configuration change at 08:08:17 NZST Thu Jul 19 2018 by mike
! NVRAM config last updated at 21:35:34 NZST Wed Jul 18 2018 by mike
! NVRAM config last updated at 21:35:34 NZST Wed Jul 18 2018 by mike
version 15.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug uptime
service timestamps log uptime
service password-encryption
service sequence-numbers
!
hostname Gateway
!
boot-start-marker
warm-reboot
boot-end-marker
!
aqm-register-fnf
!
logging buffered 65535
logging console critical
enable secret 9 $9$3JnjQpR9JT50Sn$JLsMVFipNYhVK/xdt6uahIPXx87ZfnOiS8Yd36old6E
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication login userlist local
aaa authentication ppp …
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Experts,

Is there a DNS Manager available for Windows 10 so that I can create Microsoft DNS records?
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Hey! I have a router problem. On last saturday, i got the new 1000mbit/s internet in my house. My ISP(called Digi, in Hungary .) Gave me a Huawei(Huawei EchoLife HG8242-B,) modem/router(?). I bought on monday a new TP link AC1200. BUt i was experiencing internet drop issues. (it lost connection after 30mins, and keeps doing that in that interval.) So I called my ISP, they came to my house on wednesday, and told that, the problem is in my router. So i took it back to the shop, and bought a new TP link AC1750 V4.0 on Thursday. But the problem still appear, and I've tried everything. Dhcp change, MTU size change, frimware upgrade/downgrade, DNS change but it still drops the connection on WIRED. The problem appears on every WIRED computer, at the same time. Before first my ISP came to my house, the Huawei was in Dinamic IP mode, but my ISP changed that to bridge mode, so now the connection is now, a PPOPE one. Problem still appears, every time, and ISP keep saying, there is no fault at their end. But it'S possible to get 2 wrong router? My ISP will come today too.  SO what should i change  to finally forget this problem?
The strange  thing is , from an old TP link 941N router, everything works fine.
Now, what could be the issue?
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DNS

26K

Solutions

25K

Contributors

The Domain Name System (DNS) is a hierarchical, globally distributed system responsible for associating the name of a computer, service or other resource into an IP address for connecting to the Internet or a private network. Most prominently, it translates domain names to the numerical IP addresses needed for the purpose of computer services and devices worldwide.