# Vaultwarden, Synology NAS, certificates

**URL:** <https://vaultwarden.discourse.group/t/vaultwarden-synology-nas-certificates/4971>\
**Category:** Help\
**Created:** [April 1, 2026, 10:58am UTC](https://vaultwarden.discourse.group/t/vaultwarden-synology-nas-certificates/4971 "2026-04-01T10:58:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Markreds](https://avatars.discourse-cdn.com/v4/letter/m/85e7bf/32.png) [@Markreds](https://vaultwarden.discourse.group/u/Markreds)\
**Post date:** [April 1, 2026, 10:58am UTC](https://vaultwarden.discourse.group/t/vaultwarden-synology-nas-certificates/4971/1 "2026-04-01T10:58:38Z")

</div>

Hello everyone, I would need some help, if you can.  
I installed Vaultwarden on my Synology 224+ NAS and I would like to reach it without exposing it to the internet, so without using DDNS. I configured the reverse proxy and I have no problems connecting (via VPN) to the Vaultwarden server via browser (both from PC and phone) but when I try to connect the Bitwarden app from an Android phone or PC, my problems begin.  
I think I haven’t quite understood the issue of certificates. Can anyone help me?  
For the sake of completeness, the VPN is managed by my Fritz!Box router.  
Thanks