DNS Settings with OC200

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DNS Settings with OC200

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DNS Settings with OC200
DNS Settings with OC200
2021-10-02 13:17:25 - last edited 2021-10-02 14:02:12
Model: OC200  
Hardware Version: V1
Firmware Version: 4.4.4

TL;DR Version: When using a TP-Link OC200, where should DNS settings be made?

 

Info:

I have the following equipment: TP-Link TLR-605; TP-Link OC200; (3) TP-Link EAP-245 's; (1) TP-Link EAP-225; (1) TP-Link TL-SG2008P; (1) TP-Link TL-SG2218 and (1) TP-Link TL-SG2218. It all works great! Love it!

 

Recently, I did some research and found the fastest reliable DNS servers and decided to use them with my setup. Using the OC200, I then set my Primary and Secondary DNS Servers here:

  • Settings, Wired Networks, Internet, WAN Mode, Advanced Settings

  • Settings, Wired Networks, LAN, DNS Server, Manual, Each of (3) LANs (LAN, Guest, IoT)

  • Devices; (Each of 4 EAPs); config; IP Settings; Static Mode (I want the EAPSto have fixed IPs)

 

That's a total of (8) places I've made primary and secondary DNS settings. It occurs to me that, assuming I want all of my clients and devices to point to the same DNS servers, maybe I only need to set DNS servers at the WAN setting (1st bullet above) - and the rest of the settings are not needed (?) because they will look to the setting made for the WAN.

 

So, I started to test this out.

  • I deleted the DNS settings from the (3) LANs (bullet #2), they then pointed to the gateway/router (TP-Link TLR-605). This may be OK if the TP-Link TLR-605 then uses its DNS settings - but I'm not sure that's what occurs.

  • I then started to delete the DNS settings from the first of four EAPs with static IPs (bullet #3 above). The following warning appeared, " Without Preferred DNS server, some functions may not be available including mail logs, setting the controller URL and getting time from the NTP server." So, I stopped.

 

Questions:

  1. With all the above in mind, should the DNS setting for the WAN (top bullet) be sufficient?

  2. If I remove the DNS settings from each of my (3) LANs, will they then just use the gateway as their DNS server - which points to my desired servers?

  3. Is the warning message because I set the EAPs up with static IP addresses and the individual DNS server settings are needed?

 

Thanks a lot for listening and any guidance you offer.

(1) TL-R605 v1.0 Router/Gateway (1) OC200 v1.0 Controller (1) TL-SG2210P v3.20 POE Switch (2) TL-SG2218 v1.0 POE Switch (3) EAP245 v3.0 Access Point (1) EAP225-Outdoor v1.0 Access Point
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Re:DNS Settings with OC200
2021-10-02 19:00:53

@lflorack 

 

Another way to say the above is....

 

With my setup, there are a total of (8) places where both Primary and Secondary DNS servers are entered. It seems to me that, if I want all of my devices and clients using the same DNS servers, I may be able to reduce the number of DNS entries by having only (1) set of DNS entries on the WAN settings page. This would also reduce the number of changes I'd need to make if I ever want to change DNS servers again. What I don't know is if I remove the other DNS settings will they just look to the gateway and use the DNS settings that are on the WAN settings page. Also, the AP warning message was concerning.

(1) TL-R605 v1.0 Router/Gateway (1) OC200 v1.0 Controller (1) TL-SG2210P v3.20 POE Switch (2) TL-SG2218 v1.0 POE Switch (3) EAP245 v3.0 Access Point (1) EAP225-Outdoor v1.0 Access Point
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Re:DNS Settings with OC200
2021-11-17 06:36:38 - last edited 2021-11-17 07:23:42

@lflorack 

 

A1: I personally use Pi-hole to block ADs. So, I use my pihole IP as the DNS server in DHCP settings.WAN, I'll set to be a fast and all-around DNS. I'd use Cloudflare one. 

The simple answer's for you: https://www.reddit.com/r/HomeNetworking/comments/6zqodq/wan_dns_vs_dhcp_dns/ 

A2: End clients>>>DHCP DNS>>>>WAN DNS>>>Internet.

A3: Should not. Set static IP won't affect anything. Unless you have conflicts. DNS should not be set on each one of them.. They'd use DHCP DNS if you don't fill out. DNS settings are optional. 

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Re:DNS Settings with OC200
2021-11-17 12:52:33 - last edited 2021-11-17 12:53:17

@John1234 Thanks for your response.  As it turns out, I've discovered that no matter what I designate in my DNS settings, my ISP (Spectrum) ignores those settings and directs all of my DNS activity to its own DNS servers.  

(1) TL-R605 v1.0 Router/Gateway (1) OC200 v1.0 Controller (1) TL-SG2210P v3.20 POE Switch (2) TL-SG2218 v1.0 POE Switch (3) EAP245 v3.0 Access Point (1) EAP225-Outdoor v1.0 Access Point
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Re:DNS Settings with OC200
2021-11-18 03:00:18 - last edited 2021-11-18 03:02:27

@lflorack Oh. Yes. You can run some checks on the Internet. That'll show the ISP DNS, I remember. But, anyway, your WAN DNS will do most DNS translation. 

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Re:DNS Settings with OC200
2021-12-07 19:49:30

@John1234 I have a similar setup and I set up WAN DNS as my local pihole ip which also has unbound installed on it. It works so far and dnsleak doesn't show any leak.

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