# Flow Preferences and DNS Filter Mode and https
**URL:** https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088
**Category:** Next-Gen Firewall
**Created:** [September 16, 2025, 2:27am UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088 "2025-09-16T02:27:51Z")
**Posts on this page:** 9
**Page:** 1
### Author:  [@micampo](https://community.cambiumnetworks.com/u/micampo)
#### Post date: [September 16, 2025, 2:27am UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/1 "2025-09-16T02:27:51Z")
Hello, gentlemen.
I recently purchased my _ **NSE3000** _ device, and for now, I have these questions:
**DNS Filter Mode**
How can I add my list of domains and/or _ **custom pages** _ that I want to block? Is there a manual? Is there a step-by-step guide for this?
**Flow Preferences**
I have two broadband internet services connected to _ **WAN1 and WAN2** _.
I have created two flow control rules. I have set two computers on my local network, with their respective fixed private IP addresses, to exit through _ **WAN2** _.
Additionally, I have instructed the flow control to allow all _ **WhatsApp traffic** _ to exit through _ **WAN1** _.
When I run the rules on the computers I configured for _ **WAN2** _, they are no longer able _ **to access WhatsApp** _. š
_ **Is there a way to create these two rules so that they do not affect the WhatsApp service?** _
š§
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### Author:  [@TrevorM](https://community.cambiumnetworks.com/u/TrevorM)
#### Post date: [September 19, 2025, 10:58pm UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/2 "2025-09-19T22:58:45Z")
Hi micampo
Take a look at [this video](https://youtu.be/nzciZIBKfPo?t=191) for more information on DNS filtering. The instructions on adding your custom domains start around timestamp 3:14 . You canāt block custom pages though.
On your question about flow preferences, could you please share a screenshot of the flow control rules youāve added?
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### Author:  [@micampo](https://community.cambiumnetworks.com/u/micampo)
#### Post date: [September 20, 2025, 11:18pm UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/3 "2025-09-20T23:18:32Z")
> [@TrevorM](#):
>
> Hi micampo
>
> Take a look at [this video](https://youtu.be/nzciZIBKfPo?t=191) for more information on DNS filtering. The instructions on adding your custom domains start around timestamp 3:14 . You canāt block custom pages though.
Hello
Yes, not being able to block custom pages seems very bad and sad to me.
Regarding flow control, it already worked for me.
```auto
thank you
```
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### Author:  [@micampo](https://community.cambiumnetworks.com/u/micampo)
#### Post date: [September 29, 2025, 8:17am UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/4 "2025-09-29T08:17:24Z")
Iāve already seen the video and the procedure is exactly the same as the one I use on my BIND DNS serverā¦ do you agree?
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### Author:  [@micampo](https://community.cambiumnetworks.com/u/micampo)
#### Post date: [September 29, 2025, 8:31am UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/5 "2025-09-29T08:31:51Z")
Now Iām having a problem:
I have both WANs enabled and have enabled the 50/50 traffic sharing ratio.
But some HTTPS pages are closing and telling me the IP has changed.
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### Author:  [@TrevorM](https://community.cambiumnetworks.com/u/TrevorM)
#### Post date: [September 29, 2025, 10:38pm UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/6 "2025-09-29T22:38:23Z")
Yes, if youāre using that procedure to block additional domains it will work.
\>But some HTTPS pages are closing and telling me the IP has changed.
Are there some sites which consistently fail? If so could you please share the URL so we can try to replicate that?
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### Author:  [@micampo](https://community.cambiumnetworks.com/u/micampo)
#### Post date: [October 22, 2025, 1:28pm UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/7 "2025-10-22T13:28:54Z")
I havenāt retested it yet. When I have the device connected again, Iāll let you know what Iāve done and attach images.
For now, Iām asking:
Is there a way to enter a list of 40,000 domains that I should block? Or a custom link, for example: [https://github.com/domains.txt](https://github.com/domains.txt)?
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### Author:  [@TrevorM](https://community.cambiumnetworks.com/u/TrevorM)
#### Post date: [October 24, 2025, 12:07am UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/8 "2025-10-24T00:07:33Z")
Unfortunately no. The local DNS entries is meant for a relatively small number of manually entered values.
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### Author:  [@micampo](https://community.cambiumnetworks.com/u/micampo)
#### Post date: [October 24, 2025, 12:56am UTC](https://community.cambiumnetworks.com/t/flow-preferences-and-dns-filter-mode-and-https/107088/9 "2025-10-24T00:56:30Z")
I regret having bought the equipment. That was one of the specific needs we needed to address.
How sad