In computer networking, split-horizon DNS, split-view DNS, split-brain DNS, or split DNS is the facility of a Domain Name System (DNS) implementation to provide different sets of DNS information, selected by, usually, the source address of the DNS request.

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Split horizon DNS with GoDaddy & Microtik routers

I'm looking into a simple split horizon DNS implementation. Using GoDaddy for my Internet DNS and Microtik routers for LAN DNS in a couple locations. In my office I have a server, on the Internet is ...
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170 views

How can I get bind to return the same dns answer as DNSMASQ returns?

As Dnsmasq does not support Views, I have installed and configured bind9. Everything works, however I am noticing on a specific entry that my bind server is not returning the same answer/response as ...
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setting dns cache to give internal address responses to my domain requests for my externally accessible server

I'm having trouble trying to find anything on the internet explaining how to do this... I'm running Ubuntu 14.04 with repository current Bind9 I have a authoritative DNS server hosting my domain and ...
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75 views

Split-DNS with a zone being generated automatically

I want to run a DNS setup where the zones are managed on an internal Active Directory DNS server. There is a slave DNS server on the edge on the network which runs BIND (I am open to switching this, I ...
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Updates to a BIND dynamic zone that is shared between views delayed

Here's the quick and dirty: On BIND9 with a dynamic zone that's shared between views, doing a nsupdate, updating/creating/deleting a record will work fine if I query for that record from a client ...
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BIND9 DNS with external view inside the internal view

I'm planning a new BIND9 DNS Server with a special kind of view. We a have a lot of external zones and public IPv4 addresses. To keep things simple we have a subzone of our external domain just for ...
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Naming a new Active Directory forest - why is split-horizon DNS not recommended?

Hopefully, we all know what the recommendations for naming an Active Directory forest are, and they're pretty simple. Namely, it can be summed up in a single sentence. Use a subdomain of an ...
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Split DNS clarification

I need some clarification if I understood this correctly. I've been reading about Active Directory and naming my domain, and the reason Microsoft didn't suggest using external public domain was DNS ...
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297 views

How can I access a server on local network using its public name?

I have a problem in which I cannot access a server using its public name from the same network as the server. Access to the server works fine from the internet. Reading up on this problem, I've ran ...
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Bind9: Resolve internally then externally

My DNS is running in a split DNS scenario. Both publically and internally we have the same domain. Lets call it test.com When an internal user goes to test.com they get a different response to the ...
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Is it safe to add parent domain as additional zone within DNS?

Our internal Windows domain is ad.company.co.uk. When we try to access mail.company.co.uk (for OWA or Outlook Anywhere, as an example), it resolves to the external IP address of the router and gets ...
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553 views

Split DNS for a VPN site without a server

So here's my current setup: Home: RV220W Office: RV042 I have an IPSEC VPN running fine and dandy. Everything pings. I can manually nslookup to my dns servers over the VPN just fine. Now, despite ...
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using one of 2 DNSs differentiated by requested domain

I'm using some sort of a dns-proxy service (the details aren't clear but as far as I understand it works by resolving the the domain into a cloud based proxy server and returning it's address whilst ...
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Split DNS - Cleanest solution for easy maintenance?

We have split DNS set up for our domain, which causes internal clients to resolve different DNS records from external clients. As it is right now, the two zones are managed completely separately. For ...
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426 views

How to delegate a zone from Microsoft Windows 2003 DNS server to dnsmasq?

I have a split domain setup on my production server farm: Each server has both an external (internet facing) IP address and a private internal (LAN facing) IP address. A local DNS server running ...
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Microsoft DNS: Provide different answers per-src-subnet to same query - do I need full split horizon/brain?

I have a network with two vlans, both of which refer to my AD server(s) for DNS. Some servers on this network are multi-homed. Lets say we have the two subnets A: 192.168.7.0/24 and B: ...
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Internal DNS Server's Interactions with Local Client Computers… How do they work?

I'm setting up Split Horizon DNS. I have an internal DNS server, running Ubuntu Server 10.04. Everything has been set up properly as per this article's instructions. (I know that it is a mail server ...
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425 views

How to setting up a local DNS server in LAN

I'm using BIND9 in Ubuntu to setup a local DNS that is shared by a LAN. Here is what I want to achieve: The BIND9 server and Apache server sits on 192.168.1.65 and currently the web server is ...
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Not split-DNS, but close

I have read this article on split-DNS: http://www.isaserver.org/tutorials/You_Need_to_Create_a_Split_DNS.html. I think I understand the concept, but to set up the optimal solution suggested in the ...
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Split Brain DNS and DNS forwarding

This maybe unusual question but I would like to find out if this is possible. We have several security zones behind firewall, let's call them LAN, DMZ and Backend. There is a DNS server (bind, ...
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Split DNS on Windows Server 2008 R2

This is probably a noob question but I have a SMB network with AD domain corp.local and external hosting with a DNS domain corp.co.uk. As a result if I add web services on an internal machine (like ...
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Zone transfers on a split-view Bind DNS system

I have a 2-server BIND 9 setup. Server A (the 'master' server) is properly setup with two views, one for local DNS clients (allowing recursive lookups for non-authorotive domains) and one view for the ...
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Providing access to a no-www website in an active directory environment

Our website is hosted externally, off our network. The canonical URL is a is intentionally lacking www, and will 301 redirect any requests containing www to the canonical URL. So far, so good. The ...
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BIND split-view DNS config problem

We have two DNS servers: one external server controlled by our ISP and one internal server controlled by us. I'd like internal requests for foo.example.com to map to 192.168.100.5 and external ...
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322 views

DNS pointing to different IPs from different parts of the world

I have a domain name that for some reason is pointing to different servers depending on where you are located in the world. What is odd is that I have another domain that has the same DNS servers, ...
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BIND split-view DNS not working with zone transfer

I am setting up two DNS servers. One is on the firewall/router, the other is an internal server. I have lots of experience setting up DNS servers, so this problem is particularly perplexing. Machine ...