Questions tagged [dns-server]

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Why does PSAD report my cloud provider's DNS server as portscan?

Yesterday I received a PSAD notification that there was a portscan taking place on that server. I contacted the provider and was informed that the IPs that were reported were their own DNS servers. ...
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2answers
42 views

Why my Windows DNS Server automatically add more TLD (.co.id) when i try to find domain using nslookup?

When i search a domain like google.com, nslookup automatically add more TLD (.co.id) to domain that i've looking for. How to fix it? Screenshoot nslookup on my windows dns server
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68 views

Manage DNS server on Server 2019 from Server 2012

I have a non-AD Windows Server 2012 machine (192.168.200.10) that has the DNS Server role installed, and it is the primary server for a number of zones. Unfortunately, I'm stuck with this server being ...
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209 views

How to setup OpenVPN server with bind9 as private DNS server?

Recently I was setting up a VPN node with OpenVPN server and Bind9 to prevent DNS leaks and got a problem with Bind9. Setting up OpenVPN server was mostly easy, but bind9 is a bit more tricky ...
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1answer
115 views

Connecting Google-Domains to Cloud-run URL

Does anybody know how to connect my Cloud-Run URL with a Google Domain? I'd prefer to use Google Domains DNS server. I ping successfully at at what Cloud Run assigned me in Domain Mappings(also in ...
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2answers
375 views

How does a router with DHCP and a custom DNS set deal with client DNS settings?

I have a custom DNS server in my network that I want all clients to use (it has ad-filters etc, similar to PiHole). I have set my router (LinkSys Velop) to use this DNS server. However, on the DNS ...
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0answers
1k views

DHCP not updating dynamic DNS record which has an associated CNAME record

I have an Active Directory domain corp.com, which has a child domain dev.corp.com. Each domain has a pair of DCs. For the top-level AD domain, DNS, as well as DHCP, runs on both ADs. For the child ...
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1answer
173 views

Standard Windows Server 2019 wizard setup with AD, DNS & DHCP does not resolve any DHCP client names

I am working myself through learning and setting up a pretty standard Windows Server 2019 (Essentials edition) serving as an AD PDC, DNS- & DHCP server for a very small network. I followed some ...
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1answer
343 views

Windows Server 2019 Essentials AD & DNS resolves *ANY* name to the same IP address

I am trying to update a small network to use a Windows 2019 Server Essentials for its domain controller, DNS- and DHCP server - primarily for learning things and experimenting. I have been following a ...
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1answer
48 views

Would adding CNAME records in DNS server for setting up DKIM cause email server issues?

I want to add two CNAME records to make my Microsoft exchange be DKIM compliant according to Microsoft.com’s instructions. Is there any possibility adding the two CNAME records would cause disruptions ...
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1answer
127 views

Windows server "Disable recursive dns"

I've disabled DNS recursion in my DNS server (Operating System: Windows server core 2019) using this method Disable DNS recursion, Also I've executed this commands in my DNS server PowerShell Set-...
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1answer
171 views

Process to migrate DNS and DHCP from on-premise, Windows domain controller

Our organization has an on-premise, Windows, domain controller that we'd like eliminate in favor of a local DHCP/DNS server on either our Unify switch (first choice) or FortiGate VPN appliance (second ...
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2answers
82 views

Why my domain doesn't map to the server address?

I have installed DNS server and network manager on my remote server as by following this instruction: https://www.linuxtechi.com/setup-bind-server-centos-8-rhel-8/ as below: var/named/fwd.sssss.com.db:...
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1answer
134 views

Answer from Name server that return 127.0.0.1 for A record

When resolving zapworld.com, I got the following response from the TLD server (g.gtld-servers.net.): zapworld.com. 172800 IN NS ns2.developyour.net.deleted.gandi.net. zapworld.com. 172800 IN ...
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2answers
99 views

Clarification on RFC 2606 & 6761 regarding the reserved domains

I read https://www.rfc-editor.org/rfc/rfc2606 and https://www.rfc-editor.org/rfc/rfc6761, but I still do not get some details. Why do https://www.rfc-editor.org/rfc/rfc2606 does not explicitly says ...
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3k views

Windows 10 fails to register host to DNS server on boot

So the situation is as follows. We have rolled out Windows 10 laptops that auto-connect to the wireless. The clients are Windows 10 and the DNS and DHCP server are Windows. When they are docked, ...
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1answer
31 views

Service Records for http

Is it recommended to use SRV / service records resource records for http? Are there any significant advantages or drawbacks for using them in http?
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1answer
31 views

Why does an AWS website have 3 servers in dnschecker?

When I test a client's website in dnschecker.org it shows 3 IP addresses. Is this something to do with how amazon hosts websites? Other sites I check have only one.
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1answer
459 views

BIND Zone Transfer with two views

I have a simple lab/testing Master/Slave configuration (showed below) and I would like to transfer both views to the slave. Unfortunately after the zone transfer both views in slave have records from ...
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308 views

How can I create a Primary Zone NOT integrated with Active Directory?

Using Powershell on Windows Server Core I'm administering DNS Server from a fresh install. After adding a Primary Zone using a backing Zone File, Add-DnsServerPrimaryZone -ZoneName "example.com" -...
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1answer
97 views

Is it possible to use a DNS server as a proxy? [closed]

My mobile internet provider cuts my internet service at times before it was due, I contacted them and they did nothing about it I noticed I could still ping hostnames, thus I can connect to the dns ...
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1answer
39 views

which TLD for forwarding nameserver?

I want to setup 2 forwarding name servers with powerdns for customer sites. My question is if it matters the domain under which the name servers will be registered. Godaddy panel - for what I recall ...
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1answer
335 views

Google Cloud A record issue with setting up CWP web panel [closed]

I have a VM deployed at google cloud. Here is the google cloud setup. grant-fullen.com. A 300 35.231.125.190 grant-fullen.com. NS 21600 ns-cloud-d1.googledomains.com. ns-cloud-d2....
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1answer
502 views

Extracting responses from Microsoft DNS Server Analytical logs

Is it possible to extract the DNS responses from Microsoft DNS Server Analytical logs (Microsoft-Windows-DNS-Server/Analytical)? The logs contain a field called "PacketData" in the EventData section ...
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0answers
102 views

DNS doesn't resolve some domains on huge amount of requests

I need to check 200kk (200,000,000) domains for availability and CMS information. I'm using php 7.1 and simulating multi-thread check. Hardware and config The server hardware: Multicore CPU, 64GB ...
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0answers
1k views

Initializing windows server 2019 for hosting multiple website multiple domain names and single IP

I want to set up a virtual machine to host windows server 2019 to host multiple websites in IIS 10. Each website can be reached with a domain name for example: www.website1.com www.website2.com ...
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1answer
281 views

DNS Spoofing in Bind9 DNS Server

I configured Ubuntu Server 18.04 as a master DNS server. zone ==> google.com ; ; BIND data file for local loopback interface ; $TTL 12h @ IN SOA ns1.google.com. root.google.com. ( ...
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1k views

redirect request to proxy via etc/host

I have a gentoo linux where I run an application that makes requests to a certain domain but does not respect my proxy setting I made in the environment variables (http_proxy, https_proxy, HTTP_PROXY, ...
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2answers
2k views

Why send authoritative nameserver in DNS?

Out of curiosity, I'm checking the Wireshark DNS packets. I can see that there's a DNS query from the host, and then DNS response from the DNS server. Everything is just as expected. However, if you ...
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1answer
1k views

504 DNS Lookup failed with domain-user, working fine with local user

I just set up a DNS Server on my Windows Server 2012 R2 DC and joined my PC into this domain (test.local). But now I a DNS error when trying to access an Web Application from another domain (eg. ...
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3answers
1k views

Order of external DNS servers on Router OS DNS Server

We have DNS server on our Mikrotik (RouterOS 6.36). [admin@xxx] /ip dns> print servers: 10.0.10.3,8.8.8.8 dynamic-servers: allow-remote-requests: yes max-udp-packet-...
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2answers
303 views

How to remove a deleted ZSK from BIND?

I set up my (authoritative) BIND nameserver for DNSSEC and installed one ZSK for my currently only zone. In order to test if I can use multiple ZSKs for a single zone, I generated a new key pair and ...
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1answer
211 views

VirtualBox / MAAS Port Forwarding [closed]

i have 4 VM's in VirtualBox on an Ubuntu 17.04 desktop computer, which is connected to a MAAS subnet. each VM is configured with Apache and OpenSSH, for one of 4 domains i have. my problem is that i ...
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1answer
655 views

Windows DNS server randomly responds/times out

I have a Windows 2008 server running DNS server (it's also the domain controller). DNS resolution is not working properly: it's sporadic. From this server's command prompt, a NSLOOKUP sometimes ...
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1answer
232 views

Creating vanity nameservers without hosting DNS

We'd like to create our own vanity nameserver addresses to use with various domains that we host. Our hosting provider gives us two options: use their nameserver addresses, or setup our own ...
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1answer
1k views

Multiple DNS Servers on One IP Address

I currently have two public facing DNS servers running simultaneously, which share the same public IP address. I need them both to be accessible over TCP/UDP port 53. I was thinking that since they ...
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0answers
8k views

Centos bind DNS server configuration with ipv6

in order to APPLE , after 1 June all applications must support the ipv6 so i need to reconfigure my ios app. So i create a local network with ipv6. My topology is below. i configured bind 9.8 on ...
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2answers
4k views

Keep the same IP and host name for new domain controller as crashed one

Because of some disaster I have lost my primary domain controller and thanks god that I had secondary domain controller so I could provide the service to the computer and save my data. After that I ...
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1answer
24k views

Windows DNS Server register a non **DHCP** client (server) into 2008R2

We have Linux boxes with static IP, some using Centos and other Debian, using IP ranges reserved for development and testing. We need this boxes to 'publish' their DNS into DNS Server 2008R2, ...
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1answer
84 views

Windows 2012 DNS server phase out

I've got a network with 3 AD servers that also run the DNS service. We've got a project on to migrate from Windows DNS to a new turnkey DDI solution. I'm going through everything I can think of ...
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0answers
596 views

DHCP Server Dynamically Updating DNS on Other Server (Both Windows 2012 R2, No AD)

We have had a single Windows Server 2012 R2 server (with no Active Directory) running DNS and DHCP for our main network for a good few months with dynamic DNS updates from DHCP working fine. We have ...
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1answer
52 views

DNS lookup works locally but won't go online

I had registered amraei.com 2 years ago. Recently hired a VPS and setup a DNS server using BIND to host it on my own server. I installed Webmin and setup BIND 9 on CentOS 7. As the setup finished, ...
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32 views

Clinet-side solutions to prevent DNS amplification without rate limiting on an open DNS server? [duplicate]

Are there alternative ways to operate an open/forwarding DNS server, without having to use rate limiting or other means of traffic inspection to prevent being used for DNS amplification attacks? ...
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3answers
19k views

Can't Remote Desktop To Windows Server 2012 R2

I have just demoted our Windows Server 2012 Domain Controller. Removed all services, and then did a fresh install of Windows Server 2012 R2. I gave the server the same IP address and host name that it ...
0
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1answer
180 views

What are the implications of using a default DROP rule on a public DNS server

RHEL 6.6 authoritative DNS server. Right now in IPtables I have the INPUT chain defaulting to ACCEPT. :INPUT ACCEPT [0:0] I have been having some issues with it being attacked lately and I am just ...
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1answer
516 views

Does TSIG and DNSSEC provide encryption of entire DNS packet?

it says TSIG and DNSSEC provide authentication. Does it mean whole DNS traffic would be encrypted so if I do packet capturing I would not be able to parse anything ? Or DNS data is still plain text ...
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4answers
4k views

Localhost or real hostname (real IP)

Lets suppose that I need to send data from one services to other on the same host. For this I can use localhost:port or real.domain.name:port (lets think that it cached or can be resolved by local dns)...
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1answer
64 views

What should be my DNS settings?

I have a samba server and it is on the same network as the clients which I want to connect to the servers domain. The problem is that it doesn't seem to see the server. I can access its web server ...
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1answer
148 views

AD and DHCP in one server and have 2 diffrent network

I have two lans every one should use individual internet line : First is 10.10.10.0 255.255.254.0 topology: router connected to switches and have one sever connected to same switches server act as: ...
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1answer
2k views

DNS configuration Windows Server 2012 R2

First of all I would like to say that my background is software development, saying that, I'm trying to help a friend set-up a small network in is office company. I have a windows server 2012 r2 that ...