# Discourse under 2 hostnames
**URL:** https://meta.discourse.org/t/discourse-under-2-hostnames/80160
**Category:** Support
**Created:** [February 9, 2018, 9:53am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160 "2018-02-09T09:53:28Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@Raphael\_Haase\_NL](https://meta.discourse.org/u/Raphael_Haase_NL)
#### Post date: [February 9, 2018, 9:53am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/1 "2018-02-09T09:53:28Z")
What happens if I run Discourse under two different hostnames, i.e. the very same instance is connected to 2 different network interfaces with different IP addresses and different host names, but it is the same Discourse behind the two?
Will this break anything, apart from the email links?
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### Author:  [@merefield](https://meta.discourse.org/u/merefield)
#### Post date: [February 9, 2018, 9:58am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/2 "2018-02-09T09:58:27Z")
> [@Raphael\_Haase\_NL](#):
>
> different IP addresses
“the same discourse” suggests you are running it on the same server.
This can be achieved with a single IP address.
There is nothing stopping you registering several domains and pointing them to the same IP …
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### Author:  [@Raphael\_Haase\_NL](https://meta.discourse.org/u/Raphael_Haase_NL)
#### Post date: [February 9, 2018, 9:59am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/3 "2018-02-09T09:59:06Z")
Yes, but it has to be two different IP addresses and network interfaces for network configuration reasons.
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### Author:  [@merefield](https://meta.discourse.org/u/merefield)
#### Post date: [February 9, 2018, 10:01am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/4 "2018-02-09T10:01:24Z")
Ah got you … so in essence this is the same question as:
Can I run Discourse behind two different web proxies?
I think this just went above my pay-grade! 🙂 I’ll let others chime in …
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### Author:  [@mpalmer](https://meta.discourse.org/u/mpalmer)
#### Post date: [February 9, 2018, 11:19am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/5 "2018-02-09T11:19:55Z")
It won’t necessarily break anything, if you do it right, but there’s plenty of ways you _could_ break it.
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### Author:  [@Raphael\_Haase\_NL](https://meta.discourse.org/u/Raphael_Haase_NL)
#### Post date: [February 9, 2018, 12:06pm UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/6 "2018-02-09T12:06:31Z")
Any pointers what I should avoid breaking?
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [February 9, 2018, 12:50pm UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/7 "2018-02-09T12:50:37Z")
Google is going to punish you big time if it finds out.
All email will point users at a single instance
Highly recommend you don’t do this
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### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [February 9, 2018, 2:09pm UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/8 "2018-02-09T14:09:19Z")
What problem are you trying to solve by doing this?
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### Author:  [@Raphael\_Haase\_NL](https://meta.discourse.org/u/Raphael_Haase_NL)
#### Post date: [February 9, 2018, 3:20pm UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/9 "2018-02-09T15:20:40Z")
Some weird corporate network setup where they do not want to connect subnet A to subnet B. Both need to use the Discourse instance, but are apparently not meant to talk to each other, except through using Discourse.
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### Author:  [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [February 9, 2018, 4:06pm UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/10 "2018-02-09T16:06:46Z")
One solution would be to have discoursehostname on Subnet A resolve to the subnet A address and have it resolve to subnet B on the other network. I think you might even be able to have discoursehostname resolve to both the subnet A and the subnet B addresses and the OS would figure out which one to connect to.
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### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [February 9, 2018, 4:24pm UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/11 "2018-02-09T16:24:48Z")
Yeah what you want @Raphael_Haase_NL is called
> **[Split-horizon DNS](https://en.wikipedia.org/wiki/Split-horizon_DNS)**
>
> In computer networking, split-horizon DNS (also known as split-view DNS, split-brain DNS, or split DNS, or Mirage) is the facility of a Domain Name System (DNS) implementation to provide different sets of DNS information, usually selected by the source address of the DNS request.
> This facility can provide a mechanism for security and privacy management by logical or physical separation of DNS information for network-internal access (within an administrative domain, e.g., company) and access from...
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### Author:  [@system](https://meta.discourse.org/u/system)
#### Post date: [May 15, 2020, 3:03am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/12 "2020-05-15T03:03:36Z")
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### Author:  [@riking](https://meta.discourse.org/u/riking)
#### Post date: [May 15, 2020, 4:32am UTC](https://meta.discourse.org/t/discourse-under-2-hostnames/80160/13 "2020-05-15T04:32:17Z")