DNS stands for the Domain Name System, a hierarchical, distributed database where the keys are domain names.

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Internal to External hosted site [duplicate]

REPOST >> UPDATED I have recently moved a website to another host and am having problems. We have: - new.site.com - www.site.com www.site.com is the one that was recently moved, new.site.com needs ...
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1answer
21 views

Website hosting moved from internal to external, issues

First I would like to let you know that I've researched this problem and I have seen similar questions on other sites, but I am VERY inexperienced when it comes to things like this so I really don't ...
7
votes
5answers
324 views

Why can't MX records point to an IP address?

I understand you should not point a MX record at an IP address directly, but should instead point it to an A record, which, in turns, points to the IP address of your mail server. But, in principle, ...
1
vote
1answer
28 views

What is the minimal possible bind configuration that works?

I have been trying to make bind work on Fedora 21, and haven't succeeded doing it. I read a few tutorials which basically instructed me to create a zone for my domain and an inverse mapper, then ...
0
votes
2answers
30 views

How does a client get the zone file?

I understand the role of a NS record, but what I don't understand is how a client (e.g. my computer) get the NS record in the first place? Please help me fill in the gap: I want abc.com I ask ??? ...
0
votes
1answer
19 views

What is the difference between -all and ~all in a DNS SPF record? [duplicate]

I've found that our current DNS SPF record uses the ~all keyword, but in most examples I've seen -all used. What's the difference between the two?
0
votes
0answers
26 views

DNS - Multiple MX records not working for a single domain

I have one domain, let's call it example.com with 2 MX records. The first record points to my on site Exchange 2013 server with a priority of zero, making it the preferred server. The second record ...
2
votes
2answers
51 views

Are “Glue” records in DNS used only by nameservers of the same domain?

I am bit confused with where "Glue record" is used in DNS. This documents say If you are using someone else's name servers (eg. your ISP's), you won't need to worry about glue records. You ...
0
votes
0answers
13 views

Windows Server 2012: DHCP: Android Clients have no access to the internet

I am using a Windows Server 2012 R2 as Domain Controller, DHCP Server, DNS in my network. My Router is the gateway which is connected to the DSL modem. Some Clients (all android devices) and the ...
-3
votes
1answer
44 views

Changed the DNS settigs A name records a week ago. Still resolving to old server on one computer? [on hold]

I migrated a website and changed the DNS settigs A name records a week ago, but it is still resolving to the old server on one computer. Testing with my computer, my phone on 3g and a friends phone ...
-3
votes
0answers
18 views

set in all dns answer same IP adders plus real [on hold]

I would like to configure a nameserver (ubuntu(bind 9 or pdnsd) that will return the same IP address ("A" record) for any arbitrary host name and adding the real ip addresses. For example: ...
1
vote
0answers
12 views

PDNS forward zone subdomains only

I am trying to use zone forwarding, but only for subdomains. Imagine that you have an VPN server at the domain vpn.provider.tld. This domain is pointing to an global IP address, accessible from the ...
-1
votes
0answers
17 views

How domain provider's DNS name server entries work? [migrated]

Scenario: You buy domain abc.com from provider XYZ. You want to host your own DNS server on example.com (on ns1.example.com ns2.example.com). The domain and both subdomains will point to same IP. XYZ ...
-4
votes
0answers
9 views

jetty virtual hosts on LAN [on hold]

I have a question about virtual host name on jetty (embedded), let's imagine I want to create a virtual host named www.buzzo.com visible from all nodes of my LAN, and I don't want to edit any windows ...
0
votes
1answer
48 views

TTL and Google DNS

I've found a similar post about this, however my user can't comment. I wonder why doing dig @8.8.8.8 domain.com prints out different "countdowns" when running it several times in few seconds, as if ...
0
votes
0answers
3 views

Debian Network-manager, how is the steps of connections to a captive portal [on hold]

now a few days ago I'm looking how the network-manager works to automatically open to the browser when connected to a captive portal. I know Windows and Apple need to have their own domain hosted ...
0
votes
1answer
39 views

How to set up an internal domain with Route53 on AWS?

I have a VPC on Amazon. Currently, it's running bind9 on one of the servers. It has records like this: build IN A 172.aa.bb.cc dev IN A 172.xx.yy.zz This ...
0
votes
2answers
60 views

Different subdomains, apache responding with the same vhost

I have a VPS in Digital Ocean, running ubuntu 14.04 and apache 2.4.7, DNS is also managed in DO. I have one domain let's call it thedomain.com I've been trying to configure 3 subdomains along with ...
0
votes
0answers
12 views

Domain attached file server not authenticating with DC

I have 2 servers: Domain controller (Windows server 2012 std) - 192.168.1.2 Name dcsrv01 File server (Windows server 2012 std) - 192.168.2.2 Name fsrv01 The file server is domain attached. The two ...
1
vote
1answer
73 views

AWS route 53: If I want to use external server do I need to change SOA & NS records?

If I want to point to a server not in AWS, Do I need to change the SOA & NS records that are created automatically (by route 53) ? Thanks Rafael.
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votes
1answer
18 views

Setting up two Bind9 DNS Servers on LAN with one serving a particular zone and the other hinting to it

I have set up a Bind9 DNS to serve names on a local netword 172.16.0.0/16. This Bind9 DNS service works fine and resides on 172.16.0.4. It serves names in the domain "mydomain.mak" correctly to all ...
0
votes
1answer
16 views

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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votes
1answer
29 views

Trying to set up port forwarding for multiple subdomains using SRV and DNS

I am working on a startup and trying to keep my expenses low. I'm hosting four servers in my closet with a single static IP address. I want to be able to reach each server over ports 80 (HTTP), 443 ...
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votes
0answers
12 views

Domain name redirection for wildcard domains (pref ALL possible domain names) [on hold]

im trying to setup a redirection towards an app that im writing in Java. This app opens a port 8443 on my laptop (which is a MacOS 10.10 Yosemite) and offers a HTTPS service. The big plan is to have ...
0
votes
1answer
28 views

Restrict outgoing network traffic by domain name (Linux)

My root goal is to be able to prevent attackers from making unauthorised outgoing connections on my server (e.g. for connect-back shells). I can achieve this by blocking all ports for outgoing ...
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votes
0answers
44 views

Debian DNS servfail

I have serious problems, and been struggling for days with this...Please help me what's the problem? :( i get servfail error everytime i do nslookup, and i tried everything... Please save me! very ...
0
votes
2answers
15 views

Windows Deployment Services Windows machines don't join automatically DNS wrong ip

At my work we swapped out servers and starting from scratch. Previously had WDS on the old server and would join computers automatically to domain and push the correct DNS values on the client ...
0
votes
0answers
14 views

PHP FPM, chroot can't connect to AWS RDS

I've been experimenting with chroot'ing php-fpm pools via the built-in chroot method in php's pool config. This is for the purpose of hosting multiple wordpress websites on the same AWS EC2 instance. ...
-1
votes
0answers
21 views

redirect traffic dns iptables [on hold]

I'm running a server(piratebox) on my tomato wifi router. The router is connected to the internet. I want certain clients be connected to the internet and the rest will be redirect to piratebox. I'm ...
0
votes
0answers
30 views

Unable to set up name servers [migrated]

I've set up a server at my house running cPanel and CentOS. I'm unable to point a domain to the server using nameserver's. I can how ever point it to my server using an A record. I've set up port ...
0
votes
1answer
20 views

SPF Softfail when Txt Record Exists

I am getting softfail for SPF and Sender-ID and I tested it by sending an email to check-auth@verifier.port25.com. My Set-up: 1 VPS hosting 1 website Postfix for Send only emails No incoming ...
1
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0answers
23 views

How do I set up openshift’s bind correctly

I have set up an instance of redhat’s Openshift origin and am sometimes having troubles resolving the individual apps’ domains from the outside. I have two physical machines running, both with their ...
-1
votes
1answer
32 views

What’s the difference between recursion and forwarding in bind

I’m trying to understand how bind works but have been unable to find definite information about the difference between recursive queries and “forwarding”. I’ve read that globally allowing recursive ...
-1
votes
1answer
15 views

Domain keeps getting rewritten without mod_rewrite enabled

So essentially when I go to http://www.example.com OR http://example.com the URL gets rewritten to just www.example.com OR example.com dropping/removing the http:// part. I'm not sure why this is ...
0
votes
1answer
17 views

Windows DNS stub zone with 2 NS listed inside, which one will be queried?

For a Windows DNS server stub zone, we have 2 NS servers listed there and the SOA information is correct. Both NS servers are "identical" (they sync the zones, so both are masters, so to speak, but ...
0
votes
1answer
48 views

Is it possible to have a local authoritative DNS that falls back to Route 53 for unknown local subdomains?

I have a local Forward Lookup Zone (Win Server 2003) for zxurian.com that has it's own A record, as well as a few subdomain records. I also use Route 53 for public DNS, and have a hosted zone there of ...
0
votes
1answer
8 views

Unbound DNS: How to get source IP address from python mod

I use Unbound DNS with a custom python module. Based on who sends a query, I want to return different results. How do I get the Source IP from the Python module?
0
votes
2answers
32 views

Getting “An operation on a socket could not be performed because the system lacked sufficient …” when server access the internet

I have ASP.NET application running on Windows Server 2008 R2 hosted on Rackspace servers. Suddenly something went wrong. All my application working fine except for the pages which call third part ...
0
votes
1answer
29 views

how do i make my website accessible to the internet without a static ip and from a virtual machine? [closed]

I have windows 8 host and i have installed ubuntu 14.10 server as a virtual machine in vmware. i have installed LAMP server and i am trying to host a website from it. i have created a virtual host. my ...
0
votes
1answer
22 views

Hybrid Forward Lookup Zone

We have an active directory domain companyName.local (I know, not recommended), and a public domain companyName.com. We have a mix of cloud servers and internally hosted servers. What I would like ...
3
votes
1answer
63 views

Why does TTL sometimes re-increment between DNS queries?

I dig xkcd.com, and I get something like this back: ; <<>> DiG 9.9.5-3ubuntu0.1-Ubuntu <<>> xkcd.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: ...
-3
votes
2answers
57 views

TTL in ping vs dig

When I ran ping google.com, I get a ttl value of 55: 64 bytes from 173.194.127.103: icmp_seq=68 ttl=55 time=16.4 ms When I ran dig google.com @ns1.google.com., it get a TTL value of 300. ...
0
votes
2answers
57 views

Bind DNS server respond timeout

I've set up a BIND DNS server on centos 7. I've created the master zone record, it is the following: $ttl 38400 loool.ro. IN SOA ns1.loool.ro. owner.yahoo.com. ( 1421842090 ...
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votes
0answers
18 views

mx recodrs misconfigured in ZPanel [closed]

I am using ZPanel for my domain and hosting. now my domain is working is fine. but i facing some problems on Webmail configuration. I am updating My DNS Recods in Zpanel like this Host Name TTL ...
0
votes
2answers
44 views

Forward requests from registrar to black hole / captive portal DNS?

I have a number of domains that that I would like to set to change the nameserver for to rewrite.mydomain.org. The goal is to have any domain names with this nameserver be routed to a specific Apache ...
2
votes
1answer
21 views

Configuring RRL on a DNS server using BIND

I'd like to configure a DNS server to use Response Rate Limiting (RRL) to mitigate DNS DDoS attacks. Whatever, I have to configure it top use RRL with the 'slip' parameter at 2. I've made some ...
0
votes
0answers
10 views

How can isc-dhcp-server pass /etc/resolv.conf to clients? [migrated]

How can I make isc-dhcp-server pass along whatever nameservers can be found in /etc/resolv.conf to clients? I would rather not explicitly state in /etc/dhcp/dhcpd.conf what nameservers to use.
0
votes
0answers
19 views

EC2 and Mailgun DNS setting

I'll preface this by saying I'm very much a newbie when it comes to servers, so please bear with me. I'm trying to configure an Amazon EC2 instance to allow me to send e-mail through Mailgun but I ...
7
votes
3answers
162 views

Server 2012 R2 Active Directory Domain SRV dns records suddenly disappeared

I have a test domain that I recently configured. All of a sudden, no users can log in except those with cached credentials. The domain includes two domain controllers that are both global catalogs ...
6
votes
1answer
61 views

Why can't my DNS server start (bad zone error)?

This is my config (running named on centos). /etc/named.conf options { ## path to zone files ## directory "/var/named"; ## forward non-local to google ## forwarders { 8.8.8.8; }; }; ...