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DNS server question

inscrewtable

inscrewtable

macrumors 68000
Original poster
Oct 9, 2010
1,656
402
When I log into the router/modem with Safari it says ... Primary DNS Server 203.12.160.35 Secondary DNS Server 203.12.160.36

But when I go into the System Prefs > Network > DNS pane it says 10.0.1.1 as the only DNS server.

I have just run namebench and it says the current Primary DNS server is the Fastest and that it should be 10.0.1.1

So which is really the primary dns server, is the the one that it says when I log into the router through Safari, ie 203.12.160.35 or is it 10.0.1.1 which it says in the System prefs?

Should I add some more into the network pane?

Also if I click the "+" in the Network>DNS pane to add another server the current 10.0.1.1 changes to 0.0.0.0 so I canceled out

thanks
 
Last edited:
Your router is resolving your machine name to its private IP address of 10.xxx.xxx.xxx but for the internet you need to have the ability to resolve domain names to their IP addresses.
 
Does that mean I should add some other dns servers in the network prefs pane? or leave it at 10.0.1.1

It seems to be working OK as it is with just the 10.0.1.1
 
There's no need to mess with the DNS setting within OSX or your router.
 
If you're worried about your privacy and/or security it should help. While I use opendns, I do no use this service. Then again most of my surfing needs are quite boring :)
 
inscrewtable said:
Does that mean I should add some other dns servers in the network prefs pane? or leave it at 10.0.1.1

It seems to be working OK as it is with just the 10.0.1.1
Click to expand...

The way you have it set now is optimal. 10.0.1.1 is your router's IP address. Your router will cache recent DNS lookups to speed things up and that is what you want.

What happens is say you go to google.com. Your system checks the router DNS cache for the IP address of google.com and not finding it, will then go out to the DNS server 203.12.160.35 to look it up. That result is stored in your router. Now the next time you go to google.com your system will again query the router DNS cache and this time will find the result stored from your last visit. Theoretically, this will be faster that going to the 203.12.160.35 DNS server each time.
 
maflynn said:
If you're worried about your privacy and/or security it should help. While I use opendns, I do no use this service. Then again most of my surfing needs are quite boring :)
Click to expand...

Thanks, Mike!

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SandboxGeneral said:
If you want to learn more about DNSCrypt, I suggest listening to these two Podcasts from Security Now.

http://media.grc.com/sn/SN-330.mp3 | Transcript
http://media.grc.com/sn/SN-375.mp3 | Transcript

I tend to use Google DNS which is 8.8.8.8 and 8.8.4.4.
Click to expand...

Thank you!!
 
DNS and need for DDNS

A very basic question here regarding the OS X DNS server. Is this solely managing local/private addresses (e.g., server.example.com) and still requires a DDNS service (i.e., DynDNS or No-IP) to keep a dynamic IP in sync with my domain? If I must still have a DDNS service I am wondering what benefits the DNS server brings as No-IP changes (like adding additional host names) happens in less than one minute and I must have them anyway to keep my dynamic IP in sync, correct?

Thanks,
Chris
 
tnvol said:
A very basic question here regarding the OS X DNS server. Is this solely managing local/private addresses (e.g., server.example.com) and still requires a DDNS service (i.e., DynDNS or No-IP) to keep a dynamic IP in sync with my domain? If I must still have a DDNS service I am wondering what benefits the DNS server brings as No-IP changes (like adding additional host names) happens in less than one minute and I must have them anyway to keep my dynamic IP in sync, correct?

Thanks,
Chris
Click to expand...

The DNS Server in OS X is the UNIX variant of BIND. It is not doing anything unless you have turned it on and enabled it. DDNS is updating a global DNS Server with your current IP address. They are two separate entities and do not overlap in functionality.
 
monkeybagel said:
The DNS Server in OS X is the UNIX variant of BIND. It is not doing anything unless you have turned it on and enabled it. DDNS is updating a global DNS Server with your current IP address. They are two separate entities and do not overlap in functionality.
Click to expand...

Good deal. Thanks for the clarity.
 
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