Questions tagged [domain-name-system]
The Domain Name System, usually referred to by the acronym DNS, is a hierarchical, distributed database where the keys are domain names. Questions involving publicly accessible domains should include the real, Fully Qualified Domain Name (FQDN)
12,322
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Windows :Multiple DNS query while ping and nslookup when 2 NW adapters attached
On Windows 11, I am looking no of DNS queries trigerred when 2adapters attached to device. To test this I attached wireshark for each ethernet(ethernet1, ethernet2). when I ran single nslookup command ...
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Rewriting header of ip accessed IIS server
I have server which has only port 180 > 80 and port 1443 > 443 mapped and open, I can't change this setting because of server owner. Because of that I can't setup proper dns record and I am ...
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Curl has incorrect DNS resolution in a dind context
I am running a docker:20.10.7-dind container.
Into this one I am running a multi containers app.
One container is a back container. Another one is a keycloak container.
I connect on the back container ...
- 99
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2
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Domain joined Windows Server 2019 - not connected to domain network
I have two Windows Server 2019 machines in my infrastructure which are connected on 'Guest or Public networks' and I have been unable to switch to domain network.
I have tried many solutions gathered ...
CommunityBot
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1
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SMTP Server All Records OK But All Email Sent in Spam
i bought a VPS with dedicated IP address and running windows Server 2012.
I installed an SMTP server and DNS server, created all needed records: SPF, DMARC, DKIM, PTR, MX, and A.
These results test ...
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3
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136
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How can I setup a DNS server for a subdomain behind a dynamic IP address?
I'm working on a secure/isolated service that manages TLS certificates using the ACME protocol. The server needs to respond with a TXT record on a specific subdomain. This server won't service ...
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DNS server cannot resolve addresses itself
We have a very similar issue to the one here: Server 2012 R2 DC resolves DNS for domain PC's but not for itself
We also have a Server 2012 R2 standalone DC abd are getting very similar issues (...
CommunityBot
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1
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php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
I keep getting this error very frequent:
Severity: Warning --> mysqli::real_connect(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution
This issue gets resolved ...
CommunityBot
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4
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2
answers
856
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Remote domain: DNS record A exists when NS does not
I have encountered a domain for which I can sucessfully retrieve a DNS A record. At the same time, however, any public DNS server seems to return empty NS record. The domain in question is bluedriving....
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Static IP directs to hosted service behind a proxy server but the mapped Domain name directs to Router GUI
I have a domain name (eg. example.com) that is mapped to a static IP say 245.125.145.155. I have some services in a hosted server in my LAN and proxied by a proxy manager. When I type the static IP ...
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How to mix DHCP-provided DNS servers with statically written DNS servers?
I am trying to make a combination of the DNS servers provided by my ISP and 3 static (8.8.8.8, 1.1.1.1 and 9.9.9.9).
On Ubuntu 18.04, I did it by adding the static DNS to "/etc/resolvconf/resolv....
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3
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CIFS mount in fstab succeeds on IP, fails on hostname written in /etc/hosts
I wonder why my Ubuntu Server 14.04 LTS has problems resolving a hostname from fstab.
I tried to mount the following entry:
//NAS-5h2-20/backuppc/ /mnt/backuppc cifs auto,user=THEUSER,password=...
CommunityBot
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1
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dcdiag DNS test fails, but DNS seems to be working properly
Active Directory setup:
Single forest, 3 domains, with 1 domain controller each. All running server 2008 R2, with the same domain/forest functional level.
DNS clients are configured as follows:
DC1 ...
CommunityBot
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4
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How to setup PTR (Reverse DNS) at Godaddy DNS manager
My hosting provider already did PTR setup. Now i have to setup it at my DNS holder i guess. What am i supposed to do at my Godaddy account. thank you.
my ip : 64.250.113.235
and you can check my ptr ...
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Meaning of "Flags" column in dnsmasq log output
I sent a SIGUSR1 signal to the dnsmasq process to make it write statistics to the system log. Here's an excerpt of what dnsmasq wrote to the system log:
daemon.info dnsmasq[1]: Host ...
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28
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SUBdomain redirection not working for https (apache)
I have a problem with redirecting the address: aa.bb.cc to bb.cc/aa
DNS is under the control of OVH. Redirection works for http calls and redirects on a page that is https.
However, if he calls https:/...
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1
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4k
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Domain to S3 Bucket AccessDenied
Hello i have a problem i recibe AccessDenied in my domain
I upload my site in to a AWS S3 Bucket, i make public, create a static page, but when i access via my domain.com/mypage i get a AccessDenied.
...
CommunityBot
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1
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How can I set up a local DNS or proxy that uses OpenNIC for OpenNIC domains/TLDs, and Cloudflare (or any other) DNS for the rest?
I've been pondering how to achieve this for the past few days. I love OpenNIC and everything they're doing, but sometimes the DNS servers are not always the best for normal, daily usage. While it's ...
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Kubernetes: kube-dns servers are not reachable (other pods are reachable)
this is an odd one.
I've setup my K8s cluster, 1 master and 1 worker. It uses calico as cni, and everything looks to be working as expected (I'm able to deploy pods, services, etc). I'm able to reach ...
CommunityBot
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Am able to ping my domain, but not subdomain (digitalocean)
My main domain (say: example.com) on DigitalOcean is working ok. I've only one droplet in there.
Then I created 'a' record under my main domain with another subdomain name (1.example.com).
Then, I ...
CommunityBot
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answers
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Is it required to keep DNSSEC zone fresh?
I've found the following guide on how to setup DNSSEC with NSD DNS server and ldns utilities: https://www.digitalocean.com/community/tutorials/how-to-set-up-dnssec-on-an-nsd-nameserver-on-ubuntu-14-04
...
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Adding a new DNS server with systemd-resolved
To access other machines on my network by their name, I have to add the following two lines to my /etc/resolv.conf:
search foo.local
nameserver 192.168.X.Y
But any changes I make do not persist ...
CommunityBot
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1
answer
155
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How target group dns failover works with AWS
I currently have an AWS load balancer and it has a target group, containing an instance per AZ: 2 of these are unhealthy and I have configured the attributes of the target group so DNS failover ...
- 4,667
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MacOS custom resolver not working
I use an Apple Silicion Mac and am trying to configure a custom resolver.
I have created a file in /etc/resolver/ called test, and the contents of the file are:
❯ cat /etc/resolver/test
nameserver 127....
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13
answers
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How Long Will A DNS Change Take
If I'm going to make a DNS change to an A record for my domain (changing from one IP to another), how long can I expect until people are moved over to the new info? Is it simply <= the TTL? I ...
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How to create zones and zone files for existing public zones on an internal BIND server? [closed]
We have two BIND DNS servers in our infrastructure and all of the servers and clients DNS servers are set to these two BIND servers.
We want to create some records for DNS resolution and since our ...
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Why am I not able to resolve names on subnet behind a lab network?
I have gotten the task of setting up a network where there is an existing gateway for my "public ip" 10.200.3.2/28 already. I am to setup a gw/dhcp which uses the existing gateway the given ...
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2
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nslookup fails while dig succeeds with private Route 53 hosted zone
I have set up a private AWS Route 53 hosted zone.
If I run nslookup on the newly added entry, I receive an error:
$nslookup search.syndey.recap
Server: 127.0.0.53
Address: 127.0.0.53#53
** ...
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4
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10k
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Wrong IP address registering in DNS
I've just taken over a small business network with 2 Windows servers. SRV2 (Server 2008 R2) is primarily a data backup for SRV1 (Server 2003); they're both DNS servers as well.
Our primary LAN ...
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Which Domain to use for the Google Cloud Console Organization Setup if Working with Different Domains
I have some questions about setting up the GCC Organization please.
A new Google Cloud Console account was created when setting up this domain in the Organization section of an existing GCC account ...
google-cloud-platform
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DNS Issues with Kubernetes Cluster : no servers could be reached
I'm still experiencing dns and network issues
And I'm at a dead point, looking for hints and suggestions
Summing up :
Following the indications found here : https://kubernetes.io/docs/tasks/administer-...
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How do I setup DNS for a local email server with a SMTP relay [migrated]
I'm trying to move my mail server (multi domain) to my home to increase security/privacy.
Therefore I set up a local server and a SMTP relay (postfix) on a hosted VPS (because of static IP, etc.).
...
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1
answer
35
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How can i fix source ports in BIND 9.16.xx?
The older cache DNS server in my team is configured with BIND 9.11.4; it uses 53 as the source port number.
options {
...
query-source port 53;
...
}
Meanwhile, the new one has BIND 9.16.23 ...
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Change primary and secondary DNS on domain servers using GPO
Windows Server 2016.
All Servers in domain obtain IP address automatically and DNS addresses are set manually:
Primary DNS 172.16.0.1
Secondary DNS 172.16.0.2
I created a 3rd DC (172.16.0.3), and ...
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1
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CentOS 7 Unable to Resolve Any Host Names
New to Linux and looking for friendly assistance.
My company is re-configuring our network DNS infrastructure to point our internal DNS servers at two new CentOS 7 / BIND 9 machines in our DMZ ...
CommunityBot
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2
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Using Azure Firewall's DNS Proxy with an internal DNS Server
Question
If using Azure Firewall's DNS Proxy with internal DNS severs behind this same firewall, what happens to requests for external DNS records (i.e. does this cause an infinite loop where the DNS ...
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Coredns does not return the result properly
I configured new Coredns in kubernetes and exposed it to LoadBalancer of service. Also I added a dns server to my local laptop. This is my new zone.
nlabs.hosts nlabs.io:53 {
hosts {
10.0....
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Unable to access SMB share with DNS Cache service disabled from Windows Server 2022 but it works on Server 2019
I have a requirement to disable the Windows DNS Cache on a new Windows Server 2022 RDS VM.
Trying to access a SMB share hosted on a Windows Server 2022 file server, all my servers are joined to a AD ...
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How is the URL "ai." parsed? [migrated]
I found that browsing http://ai. returns a web page.
This is no longer a public website. If you have come here you are at
the wrong place. You probably want to go to one of these sites:
whois.nic.ai ...
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2
answers
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A DNS record for both www and non-www websites
For each website I have, I noticed that having just this A DNS record:
*.example.com 3600 A 0 192.1.2.3
will make http://example.com unavailable and having just this A DNS record:
example....
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2
answers
228
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Why do I have to specify the DNS server when doing a forward lookup?
I'm trying to set up a small, private DNS server. I'm using Bind9 and systemd resolved, netplan for managing the network. I've specified the DNS server in both the netplan configuration and /etc/...
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2
answers
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Windows DNS Lag and Timeouts
I've recently migrated some 2012 R2 servers to Server 2022, including some domain controllers.
Everything appears to be fine except that one of the VMs is behaving strangely when attempting name ...
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My network profile is showing as private instead of domain profile after installing Active Directory DNS on Windows Server 2019 VMware Workstation
After installing Active Directory and DNS role on VMware Workstation with domain "mylab.local". I used NAT switch on my VM and my IpV4 settings are
After installation my current network ...
CommunityBot
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15
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What's the reverse DNS command line utility?
What's the command to find the name of a computer given its IP address?
I always forget what this command is, but I know it exists in Windows and I assume it exists on the *nix command-line.
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2
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Order or precedence for A or CNAME record
I need to send two addresses for the same, let's say domain, and based on the ORDER, send traffic to the first address until it becomes unavailable, which the application knows. It just needs DNS to ...
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Two nameserver domains that refer to each other causing issues
I have a VPS which hosts multiple domains including (modified for privacy):
mydomain.co.uk
mydomain.uk
I have registered name server GLUE (verified) for the following - all use the same IP address:
...
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Bind rpz only gives max TTL of 5 seconds
When I configure BIND with response policy zone so I can override DNS for LAN network I have noticed that TTL returned by this DNS servers max out at 5 seconds. I can lower TTL to 1-4 seconds but ...
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pfsense temporarly failed to resolve hosts
Suddenly I was unable to reach the outside world.
I pinged one IP on internet, it worked
I tried to resolve a hostname with the dhpd configured server, i.e. netgate/pfsense, timeout
I tried to ...
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35
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What happens if the Root name server gets down? [closed]
What happens if the Root name server of a TLD gets down? Does it lead to the malfunction of domains with that domain extension?
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Is there a way to use a specific DNS for a specific domain?
At work we use OpenDNS and it has wrongly blocked irc.freenode.net for malware. How can I make sure that any request for *.freenode.net goes to 8.8.8.8 and 8.8.4.4 (Google's DNS).
I tried doing this ...
