# one letsencrypt certificate for all installed applications

**URL:** https://dietpi.com/forum/t/one-letsencrypt-certificate-for-all-installed-applications/4886
**Category:** General Discussion
**Created:** [21 January 2021 18:45 UTC](https://dietpi.com/forum/t/one-letsencrypt-certificate-for-all-installed-applications/4886 "2021-01-21T18:45:59Z")
**Posts on this page:** 1
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### Author: ![mail2rst](https://dietpi.com/forum/letter_avatar_proxy/v4/letter/m/ee59a6/32.png) [@mail2rst](https://dietpi.com/forum/u/mail2rst)
#### Post date: [21 January 2021 18:45 UTC](https://dietpi.com/forum/t/one-letsencrypt-certificate-for-all-installed-applications/4886/1 "2021-01-21T18:45:59Z")

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If I have dietpi installed machine with pihole, nextcloud, homeassistant, plex, Bitwarden softwares. Mostly all default settings. I am using duckdns as my ddns with default linux cron commands. I want to access system from outside of LAN. I will configure dietpi-letsencrypt for certificate & use certbot.  
As in theory I know duckdns using wildcard URL so if my duckdns domain is ([cloud.duckdns.org](http://cloud.duckdns.org)) then I can access “[https://next.cloud.duckdns.org](https://next.cloud.duckdns.org) or [https://pihole.cloud.duckdns.org](https://pihole.cloud.duckdns.org) or [https://plex.cloud.duckdns.org](https://plex.cloud.duckdns.org))“  
The main thing I want to know, is in dietpi I can make a reverse proxy system so that all application use same HTTPS: certificate. On internet I saw these things are carried out by NIGIX reverse proxy server. But as we have pihole installed which have LIGHTTPD by default. I do not want to interfere much to dietpi default configuration. Please guide me how we can put reverse proxy to outside world with the dietpi installed operating system having dietpi default installed multiple applications.  
Main goal one letsencrypt certificate for all installed applications to secure them.

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