Questions tagged [dns-server]

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23 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
73 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
45 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
48 views

Clarification on RFC 2606 & 6761 regarding the reserved domains

I read https://tools.ietf.org/html/rfc2606 and https://tools.ietf.org/html/rfc6761, but I still do not get some details. Why do https://tools.ietf.org/html/rfc2606 does not explicitly says which ...
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0answers
379 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
26 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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0answers
21 views

DNSControl vs Authoritative server services

I just had a look at DNSControl and I have a question: if we can edit records from multiple providers then - supposing a multi-user app with auth system exists - can we allow our clients to edit the ...
0
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1answer
29 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
195 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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0answers
159 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
66 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 ...
0
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1answer
28 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 ...
1
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1answer
228 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
330 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
89 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 ...
2
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0answers
674 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
161 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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0answers
599 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, ...
11
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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 ...
0
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1answer
534 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. ...
1
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3answers
916 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
206 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 ...
0
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1answer
180 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 ...
0
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1answer
502 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 ...
0
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1answer
162 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
992 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
7k 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 ...
2
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2answers
3k 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 ...
5
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1answer
20k 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, ...
5
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1answer
83 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 ...
0
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0answers
575 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 ...
0
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1answer
49 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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0answers
30 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? ...
2
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3answers
18k 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
167 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 ...
0
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1answer
470 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 ...
2
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4answers
3k 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)...
0
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1answer
62 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
145 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: ...
0
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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 ...
1
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1answer
154 views

Is it possible for a Windows server to have 2 (or possibly more) network names (or aliases)?

I have a temporary need to consolidate 2 currently separate servers onto a single machine. I am considering using VMs, but it would be far less work if I could just have 2 different server names point ...
1
vote
1answer
521 views

Public domains and hosts resolving to 127.0.0.1

Our security systems are going crazy alerting us that hundreds of external DNS queries and responses are resolving to addresses like 127.0.0.1 and sometimes 0.0.0.0 to requests originating from our ...
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2answers
56 views

Can a DNS server (specified by its IP address) be spoofed?

When a DNS server is specified (in my case in OS X, in the Network Preferences), can it be spoofed (for instance by an organization with the power of a government)? I am asking the question because ...
0
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2answers
5k views

Setup Azure VM - Connect to internet

I'm basically a total novice in the area of VPN's and DNS servers. I have an Azure VM which I have created and I need to connect it to the internet, and googling sends me to pages where peoples ...
1
vote
1answer
7k views

Missing SRV record at DNS server

Server 2008R2. 2003 functional level. One of my branch DCs, which we will call BranchDC1, is not registering SRV records in example.com/_msdcs/gc/_sites/_tcp. The DC is marked as a Global Catalog in ...
1
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2answers
58k views

unable to start the bind dns service in linux

observed following errors when try to start the dns service in virtual linux pc [root@mininat ~]# service named status Redirecting to /bin/systemctl status named.service named.service - Berkeley ...
5
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2answers
14k views

bind9 configure forward zone for local domain without DNSSEC for this zone only

I have a working DNS server for local domain mydomain.local. I am trying to configure bind9 to work in default configuration, except for this zone, for which I want to forward queries to local DNS ...
0
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1answer
84 views

Contact DC from a client without DNS

I have read Can I create a DC without a DNS Server?. But my question is a bit different. I have one client in a completely different subnet from the DC. That client does not have access to the ...
21
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2answers
5k views

How is a single IP address load balanced?

I'm aware of "round robin DNS" load balancing, but how can a single IP address be load balanced? Google's DNS servers for example, 8.8.8.8 and 8.8.4.4. Wikipedia's load balancing article states: ...
2
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1answer
665 views

DNS server with scripting [closed]

I would like to know if there's any way of having a DNS server on Linux that runs a script and reply a different IP list depending on the script data returned. I've searched Google for 'DNS server ...