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Old 07-14-2016, 10:32 AM   #1
funkytwig
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Using DNS to stop local domains gong via internet


Hi. We have been having a problem with accessing one of our local servers which has a domain. If access it via its IP the it is very fast but if we use the domain name (its actually a noip.com dydns domain) transfusing data is very slow. Some research has indicated this is because the tragic is going out onto the net and coming back. It also indicated that I can use a DNS server to stop this happening.

So I setup a bind9 DNS and it all seems to be working well. Thing is I cant work out how to 'hard wire' the domain in question to a local IP.

I want to do this as some of the computers are laptops and the domain needs to be accesses outside our network as well as from within it. Its actually a owncloud server so havering to change between domain and IP in the oC client is not practicable.

Regards,
ben
 
Old 07-14-2016, 04:23 PM   #2
lazydog
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Quote:
Originally Posted by funkytwig View Post
Hi. We have been having a problem with accessing one of our local servers which has a domain. If access it via its IP the it is very fast but if we use the domain name (its actually a noip.com dydns domain) transfusing data is very slow.
The reason for the slowness is most likely because of the TTL on the DNS records. They are normally set low to ensure that the dydns is most accurate. This means that the client in question needs to renew it's dns information about the server it is trying to connect to.


Quote:
So I setup a bind9 DNS and it all seems to be working well. Thing is I cant work out how to 'hard wire' the domain in question to a local IP.
Not sure I understand the question but I'll take a stab at it.

On the bind server you should have a zone file for your domain. Add the server as so to that zone file:

Code:
server name     IN   A   IP Address
Quote:
I want to do this as some of the computers are laptops and the domain needs to be accesses outside our network as well as from within it. Its actually a owncloud server so havering to change between domain and IP in the oC client is not practicable.

You are going to have to make your dns server accessable to the internet. Then you are going to have to update your Domain DNS servers with your DNS servers IP Address (most registers require a minimum of 2 dns servers).
 
Old 07-14-2016, 04:49 PM   #3
funkytwig
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OK, think you slightly misunderstood. I only want to be able to access the local DNS locally. for some reason accessing owncloud at home is not so much of a problem, it seems to be only a real problem doing it at work. Therefore don't think I need to put the local DNS in the DMZ.

My zone file, db.prsc.noip.me, looks like this

;
; BIND data file for prsc.local internal domain
;
$TTL 604800
@ IN SOA pluto.prsc.localhost. pi.localhost. (
2 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS pluto.prsc.localhost.
@ IN A 127.0.0.1
@ IN AAAA ::1

; Beow are the A record addresses

prsc IN A 192.168.0.5

; Below are the CNAME record addresses (aliuses) - point ot the A records

server01 IN CNAME prsc.noip.me.


My DNS seems to be working apart from this zone. I can ping pluto (the dns server, router, the router and google.com. If I try to ping prsc.noip.com I get a unknown host error.
 
Old 07-14-2016, 07:50 PM   #4
jefro
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Seems like a lot of work. Couldn't you just put the servers static local IP (web server IP) address into local hosts files?
 
Old 07-14-2016, 07:55 PM   #5
funkytwig
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Originally Posted by jefro View Post
Seems like a lot of work. Couldn't you just put the servers static local IP (web server IP) address into local hosts files?
Already done most of the work. I want it to be easy for people to set there computers up themselves.
 
Old 07-17-2016, 02:35 PM   #6
lazydog
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Do you own the noip.com domain? If not then you shouldn't be using it. and that would also explain why it doesn't work from the office.
 
Old 07-18-2016, 06:15 AM   #7
funkytwig
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Its a DYDNS service. I ended up using dnsmasq and it works like a dream.
 
  


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