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How to transfer directories, files and data from the Master Server to the Slave Server

Nope you have to do it yourself, just setup a passwordless key based authentication between the 2 servers and use rsync and cron to do the job automatically.
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DNS behavior / Wireshark

This is natural and may have lots of reasons i will mention a few: 1 - Load Balancing --> The general and easy way of providing HA and Load Balancing is through defining multiple A records so that ...
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Domain transfer: is my transfer incomplete, or is propagation taking a while?

One thing I'd overlooked in the WHOIS was the domain_delegaterequested field. It was set to no for my domain, as it had been suspended by my previous registrar. The values for this field can be: yes ...
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1 vote
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Domain transfer: is my transfer incomplete, or is propagation taking a while?

Domain transfers usually takes 5-7 days in (www.domain.com/domains/transfer) depending on the previous and current domain provider. This is due to several variables that has to be considered including ...
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Public and private dns zone using the same domain name

It is a fairly common feature for a DNS server to have the capability to provide different sets of DNS information, usually selected by the source address of the DNS request. This is often called ...
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DNS Server - how to differentiate clients?

Clients behind a NAT cannot be differentiated on the basis of IP address. The authentication should be done at an upper (application) layer but the DNS protocol does not provide authentication ...
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DNS Server - how to differentiate clients?

Simply configure your clients to query the DNS server over its IPv6 address. With IPv6 each clients own IPv6 address should be retained and you avoid the whole NAT issue.
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How to whitelist domain in Unbound

Ok, I found a solution which I will post here if anyone else will need a help for this situation. If you use RPZ zone then it should be used: CNAME rpz-passthru.. If you use local-zone blocklist then ...
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1 vote

How to initiate manual AWS Route 53 Failover when using Health Checks?

Your comment so that there is zero downtime is a red flag. DNS resource records are cached around the world. You cannot achieve zero downtime. Your comment Currently we have to manually edit the IP ...
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-1 votes

DNS Server - how to differentiate clients?

Have you looked into query logging: # vi /etc/named.conf ... options { querylog yes; } ... logging { channel querylog { file "/var/log/querylog"; ...
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4 votes
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DNS strange behavior for VPN addresses

With insights from @PatrickMevzek and @user1686 I managed to understand the problem, so I'll post this answer to help anyone with the same problem. The barracudavpn program, after the connection, ...
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1 vote

How to have a CNAME record and TXT record for the same domain?

Take a look at RFC 1034 DOMAIN NAMES - CONCEPTS AND FACILITIES, Section 3.6.2 If a CNAME RR is present at a node, no other data should be present; and RFC 1920 Common DNS Operational and ...
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How to have a CNAME record and TXT record for the same domain?

It is defined at the protocol level that (RFC 2181, 10.1): An alias name (label of a CNAME record) may, if DNSSEC is in use, have SIG, NXT, and KEY RRs, but may have no other data. That is, for any ...
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No DNS on PXE booted Linux Live System with NetworkManager

Try defining the DNS servers at kernel PXE boot command line using the following variables IPV4DNS0=8.8.8.8 IPV4DNS1=8.8.4.4 of course you can use different DNS servers
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Redirect with CNAME does not work

Please provide your dns configuration with dig or nslookup (anoymized) You can also do a curl, then you see exactly what http does curl -v https://www.site123.com/
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3 votes

Redirect with CNAME does not work

A CNAME record in DNS is not an HTTP redirect, it's an alias within DNS itself. Ie, in your example it makes it so that a query for www.example.com will resolve the same as a query for othersite.com ...
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Preventing masked url redirect from outside

A redirection is a concept of the HTTP protocol (RFC 9110, 15.4), where the server tells the client (browser) that the content is somewhere else, and the browser automatically opens the URL given in ...
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-1 votes

Is *.localhost resolving to 127.0.0.1 standardized?

The literal answer is no. It is standartized (as discussed in the other answer) to be the loopback address which can be 127.0.0.1, ::1 or both. Besides it a SHOULD, so some might not have set it up ...
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How to use HAProxy to override 25 Certificates per Application Load Balancer limit in AWS?

You can now ask for increasing your Quote. I did few weeks back and got it increased to 100. Another approach would be to use a NLB -> Caddy Server -> ALB -> App servers. Caddy server can ...
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Is *.localhost resolving to 127.0.0.1 standardized?

It should on most systems. The RFC itself says name resolution SHOULD return the loopback address for anything inside .localhost. The domain "localhost." and any names falling within "....
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How does Windows decide which DNS Server to use when resolving names?

On Windows 10 and 11, DNS priority is determined by interface metric, this is documented here - the DNS servers on the interface with the lowest metric value will be used first. It is important to ...
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1 vote
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Putting a caching nameserver in front of ad

As you mentioned in your comment, the client is trying to send a dynamic dns update request but it's going to the caching NS. One thought that would really only work with DHCP clients is to have the ...
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How to reset the resolv.conf file on a Synology Diskstation NAS?

One possible way is to enable ssh service on Synology NAS, login and edit /etc/resolv.conf Here is a page which describe how to enable it. Enable SSH service Go to the terminal setting page on your ...
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1 vote

Why does wildcard dns entry resolve to a singular hostname?

A host name oma.example.org falls within a wildcard *.example.org. Technically it is possible to make a certificate with SAN field containing redundant value DNS:*.example.org, DNS:oma.example.org, ...
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The security database on the server does not have a computer / workstation trust relationship - on a domain controller

To solve this issue I was able to edit and remove some aliases within the registry. Specifically "LanManServer". After removing additional aliases, I successfully logged into the domain ...
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OpenWRT - How to redirect all subdomains of a hostname, to the same host, so that it can be reverse proxied?

As of today*, this is available in Luci: under Network -> DHCP and DNS -> General, field Addresses *Merged in Sep 2020
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Dns pointing domain to ip address

In order to designate and configure DNS for the domain you have to have access to the account where the domain was registered, so unless they have your account information at the Registrar they can't ...
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How to change DNS resolution order with OpenVPN on Synology?

Quick question from a newbie: Is there a way to simply reset the resolv.conf file? According to Synology support, my file shows some strange DNS servers, which I have never specified. How can I reset ...
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Wrong IP address registering in DNS

As others already mentioned, removing the "Register this connection in DNS" checkbox at the network adapter setting does not solve this. You can modify an existing "SkipAsSource" ...
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DNS policies Windows Domain Controller

You cannot do this as a base function of Active Directory DNS. You need a network load balancer. F5 BigIP DNS works in the way described and there are other load balancers that do the same. You can ...
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Dig DNS root server doesn't give answer section

Based on the unexpected results that you showed, I get the impression that you are running dig in an environment where you do not have a "clean" network path that allows you to send DNS ...
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Can access site from external network, but not from internal network

You must set your Firewall to redirect the traffic from the internal IP range(s) to the internal IP of the Server 192.168.0.x, for the port and traffic type.
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How to disable AAAA lookups?

You can use CoreDNS as local resolver with aaaa plugin. This is a custom plugin which needs coredns plugin.cfg to be modified and then you need to rebuild it (see here for more info), or you can use ...
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1 vote
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Use an external subdomain as a zone in my local DNS server

You don't need to delegate from the public facing DNS to the internal one. You may only delegate if you want to use DNSSEC in the internal zones. Which may not be the case. Also delegating from the ...
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1 vote
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How to point a name to another name in the DNS?

I figured it out. The problem was the existence of the subdomain itself. I had to delete the subdomain test.api.konfigurator.company.de to create the CNAME record.
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