# Pritunl running alongside Nxfilter

**URL:** <https://forum.pritunl.com/t/pritunl-running-alongside-nxfilter/3785>\
**Category:** Pritunl VPN\
**Tags:** pritunl\
**Created:** [May 2, 2026, 2:22am UTC](https://forum.pritunl.com/t/pritunl-running-alongside-nxfilter/3785 "2026-05-02T02:22:21Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![jureci](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/j/da6949/32.png) [@jureci](https://forum.pritunl.com/u/jureci)\
**Post date:** [May 2, 2026, 2:22am UTC](https://forum.pritunl.com/t/pritunl-running-alongside-nxfilter/3785/1 "2026-05-02T02:22:21Z")

</div>

Hello everyone!

I’m having trouble getting Pritunl and NXFilter to work together.

I installed Nginx to manage access for both services with their respective service ports, and everything is working very well.

However, when I configure my VPN servers to deliver the DNS of the running NXFilter, I simply lose all the configuration of my Pritunl server; it reverts to a blank configuration.

I’m only using the NXFilter server for the VPN servers, not to resolve the issue for the entire Pritunl server, and even so, this problem of losing all the configuration occurs.

My environment is running the Pritunl Enterprise server authenticated with Active Directory; all the configuration works perfectly. I only lose all the configuration when I add the NXFilter DNS to be used for client connections associated with their respective servers.

Has anyone else experienced this problem? Could you tell me how I can add the nxfilter DNS to the servers without causing this kind of problem of losing all the configuration of my environment?

Regards.

---

<div class="post-metadata">

**Author:** ![zach](https://forum.pritunl.com/user_avatar/forum.pritunl.com/zach/32/1105_2.png) [@zach](https://forum.pritunl.com/u/zach)\
**Post date:** [May 4, 2026, 8:27pm UTC](https://forum.pritunl.com/t/pritunl-running-alongside-nxfilter/3785/2 "2026-05-04T20:27:37Z")

</div>

The Pritunl server will use the DNS server configured with the system. This can be changed in /etc/resolv.conf or if the Linux distribution has a DNS service it would be configured with that. If you have an internal VPC DNS configuration those values can’t be used in the Pritunl configuration unless the forwarding DNS server also has those configured.

---

<div class="post-metadata">

**Author:** ![jureci](https://forum.pritunl.com/letter_avatar_proxy/v4/letter/j/da6949/32.png) [@jureci](https://forum.pritunl.com/u/jureci)\
**Post date:** [May 5, 2026, 12:25pm UTC](https://forum.pritunl.com/t/pritunl-running-alongside-nxfilter/3785/3 "2026-05-05T12:25:24Z")

</div>

Okay Zach.

Regarding the DNS issue, I preferred not to include the nxfilter DNS IP address within the VPN servers for user delivery.

However, I noticed that the problem persists, still resetting my environment configuration after 24 hours.

I privately forwarded my environment configuration to your email; I’m running Pritunl behind Nginx (Docker).

I activated the reverse proxy function, but when activated, I lose access to the web interface.

I also tried activating these parameters:

pritunl set app.reverse\_proxy true  
pritunl set app.reverse\_proxy\_header “X-Forwarded-For”  
pritunl set app.reverse\_proxy\_proto\_header “X-Forwarded-Proto”  
pritunl set app.server\_ssl false  
pritunl set app.redirect\_server false  
pritunl set app.allow\_insecure\_session true

Without success, after 24 hours pritunl is back to zero ☹