# Problem accessing Nextcloud from behind a reverse proxy server **URL:** \ **Category:** ℹ️ Support\ **Tags:** reverseproxy, tailscale\ **Created:** [April 16, 2022, 11:24pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615 "2022-04-16T23:24:17Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![Seth12](https://help.nextcloud.com/letter_avatar/seth12/32/5_5575768a8748004e209b776fc1b2916d.png) [@Seth12](https://help.nextcloud.com/u/Seth12)\ **Post date:** [April 16, 2022, 11:24pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/1 "2022-04-16T23:24:18Z")
Hello, I am running Ubuntu Server 21.10 in a Hyper-V machine with Windows Server 2022 as the host system. This host server is one of several I have behind my router, so I have no choice but to use a reverse proxy to get to my Nextcloud installation. I should also add that I installed Nextcloud on the Ubuntu server using snap. Here’s my problem, I can access the Nextcloud installation from my domain name ([example.com](http://example.com)) to get to the “Access through untrusted domain” page, but for some reason as soon as I add my IP address to the list of trusted domains, I get a 500 - Internal server error. Any help with this would be greatly appreciated, I have already spent days trying to get this Nextcloud installation up and running. Thanks for your time. ---
**Author:** ![cyberjohn58](https://help.nextcloud.com/letter_avatar/cyberjohn58/32/5_5575768a8748004e209b776fc1b2916d.png) [@cyberjohn58](https://help.nextcloud.com/u/cyberjohn58)\ **Post date:** [April 17, 2022, 2:44pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/2 "2022-04-17T14:44:42Z")
You will need to add your reverse proxy to the trusted domain in Nextcloud config.php. [https://docs.nextcloud.com/server/20/admin\_manual/configuration\_server/reverse\_proxy\_configuration.html](https://docs.nextcloud.com/server/20/admin_manual/configuration_server/reverse_proxy_configuration.html) ---
**Author:** ![Seth12](https://help.nextcloud.com/letter_avatar/seth12/32/5_5575768a8748004e209b776fc1b2916d.png) [@Seth12](https://help.nextcloud.com/u/Seth12)\ **Post date:** [April 17, 2022, 4:25pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/3 "2022-04-17T16:25:49Z")
Thank you for your response, I hadn’t thought about adding a trusted proxy. So I had added the proxy IP address to the list of trusted domains already, but from what I understand I need to add it to the list of trusted proxies. I know the link you gave me describes how to do this, but I suck with php. This is what I have added in the config.php file, but it doesn’t seam to work. Any ideas? ```auto '192.168.2.2', **<---This is the only line I added** 'apps_paths' => array ( 0 => array ( 'path' => '/snap/nextcloud/current/htdocs/apps', 'url' => '/apps', 'writable' => false, ), 1 => array ( 'path' => '/var/snap/nextcloud/current/nextcloud/extra-apps', 'url' => '/extra-apps', 'writable' => true, ), ), 'supportedDatabases' => array ( 0 => 'mysql', ), 'memcache.locking' => '\\OC\\Memcache\\Redis', 'memcache.local' => '\\OC\\Memcache\\Redis', 'redis' => array ( 'host' => '/tmp/sockets/redis.sock', 'port' => 0, ), 'log_type' => 'file', 'logfile' => '/var/snap/nextcloud/current/logs/nextcloud.log', 'logfilemode' => 416, 'instanceid' => 'ocorkmrneall', 'passwordsalt' => '96HOW3vfmVWqKs36OKBvHBKodQgddY', 'secret' => '6bTJrze4ttg63abZW4CteNdxawtUJryfQKqL6kFu8VOrZGWN', 'trusted_domains' => array ( 0 => 'localhost', ``` ---
**Author:** ![cyberjohn58](https://help.nextcloud.com/letter_avatar/cyberjohn58/32/5_5575768a8748004e209b776fc1b2916d.png) [@cyberjohn58](https://help.nextcloud.com/u/cyberjohn58)\ **Post date:** [April 17, 2022, 5:12pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/4 "2022-04-17T17:12:53Z")
If this will help, these are my settings. I have my server behind a Nginx Reverse Proxy server but the concept is still the same. ‘trusted\_domains’ =\> array ( 0 =\> ‘Domain Name’, 1 =\> ‘Nextcloud Server IP’, 2 =\> ‘Reverse Proxy Server IP’, ), ‘trusted\_proxies’ =\> ‘Reverse Proxy Server IP’, ‘overwriteprotocol’ =\> ‘https’, ‘overwritehost’ =\> ‘Domain Name’, ‘overwritecondaddr’ =\> ‘^00\.00\.000\.00$’, \<---- This is the reverse proxy IP broken down. ‘forwarded-for-headers’ =\> array ( 0 =\> ‘X-Forwarded-For’, 1 =\> ‘HTTP\_X\_FORWARDED\_FOR’, ), ‘overwrite.cli.url’ =\> ‘[https://Domain](https://Domain) Name/nextcloud’, ---
**Author:** ![Seth12](https://help.nextcloud.com/letter_avatar/seth12/32/5_5575768a8748004e209b776fc1b2916d.png) [@Seth12](https://help.nextcloud.com/u/Seth12)\ **Post date:** [April 17, 2022, 5:50pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/5 "2022-04-17T17:50:32Z")
> [@cyberjohn58](#): > > ‘overwritecondaddr’ =\> ‘^00.00.000.00$’, \<---- This is the reverse proxy IP broken down. I am trying to set it up right now, I don’t understand this part. So lets say my reverse proxy server IP is 123.123.1.1 would I change this value to ‘^000.000.0.0$’ ---
**Author:** ![Seth12](https://help.nextcloud.com/letter_avatar/seth12/32/5_5575768a8748004e209b776fc1b2916d.png) [@Seth12](https://help.nextcloud.com/u/Seth12)\ **Post date:** [April 17, 2022, 7:14pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/6 "2022-04-17T19:14:08Z")
I got it figured out, finally! Alright, for anyone else running into this problem, my fix was everything cyberjohn58 had to say (thanks again, that was a big help) as well as this fix from RockNLol that has to do with forcing NC to send out uncompressed data. > [@NC behind an IIS Reverse Proxy](https://help.nextcloud.com/t/nc-behind-an-iis-reverse-proxy/39325): > > hi! I just installed NC the first time on a debian 9 VM on my Windows Server 2016 Server at home. NC works fine, as long as I only use my internal hostname cloud.mydomain.local, except for the SSL errors, since I created and installed a certificate for my external hostname [cloud.mydomain.com](http://cloud.mydomain.com). Unfortunately setting up a working reverse Proxy isn’t working for me. I set it up in IIS by creating a Rewrite Rule with ARR like I did for multiple other webinterfaces in my local network, but I keep get… Thank you both for saving me an untold amount of time. ---
**Author:** ![cyberjohn58](https://help.nextcloud.com/letter_avatar/cyberjohn58/32/5_5575768a8748004e209b776fc1b2916d.png) [@cyberjohn58](https://help.nextcloud.com/u/cyberjohn58)\ **Post date:** [April 17, 2022, 8:13pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/8 "2022-04-17T20:13:17Z")
‘trusted\_domains’ =\> array ( 0 =\> ‘Domain Name’, 1 =\> ‘192.168.2.2’, 2 =\> ‘123.123.1.1’, ), ‘trusted\_proxies’ =\> [‘123.123.1.1’], ‘overwriteprotocol’ =\> ‘https’, ‘overwritehost’ =\> ‘Domain Name’, ‘overwritecondaddr’ =\> ‘^123\.123\.1\.1$’, ---
**Author:** ![rcjca](https://help.nextcloud.com/letter_avatar/rcjca/32/5_5575768a8748004e209b776fc1b2916d.png) [@rcjca](https://help.nextcloud.com/u/rcjca)\ **Post date:** [December 3, 2023, 1:38pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/9 "2023-12-03T13:38:46Z")
The above ‘condensed’ April 22 solution offered by cyberhohn58 worked for me as well. Running NC on a Proxmox server, using the Turnkey LXC container NC template. ---
**Author:** ![orbalt](https://help.nextcloud.com/user_avatar/help.nextcloud.com/orbalt/32/64285_2.png) [@orbalt](https://help.nextcloud.com/u/orbalt)\ **Post date:** [August 26, 2024, 6:47pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/10 "2024-08-26T18:47:25Z")
Settings provided by cyberjohn58 worked out perfectly for me. The only thing that was different in my setup is that I additionally needed to override overwritewebroot parameter because I’m hosting NC using Caddy reverse proxy (+ Tailscale) and it forwards all requests on specific URL path to the NC. Otherwise I was getting empty (almost) login page and no specific logs. My Caddy reverse proxy server and NC are both running on same docker bridge network so to obtain trusted proxy IP I went and checked what is my IP of Caddy for given network (recommend checking from Portainer). ‘trusted\_domains’ =\> array ( 0 =\> ‘[mydomain.net](http://mydomain.net)’, 1 =\> ‘192.168.0.XXX’, ← LAN IP of my docker host machine 2 =\> ‘172.22.0.2’ ← Proxy server docker network IP ), ‘trusted\_proxies’ =\> [‘172.22.0.2’], ‘overwriteprotocol’ =\> ‘https’, ‘overwritehost’ =\> ‘[mydomain.net](http://mydomain.net)’, ‘overwritewebroot’ =\> ‘/nextcloud’, ← this is the path Caddy listens on ‘overwritecondaddr’ =\> ‘^172\.22\.0\.2$’, ← derived from Caddy net IP ‘forwarded-for-headers’ =\> array ( 0 =\> ‘X-Forwarded-For’, 1 =\> ‘HTTP\_X\_FORWARDED\_FOR’, ), ← be careful guys, these are suspended sometimes by reverse proxies and need to be forwarded specifically on reverse proxy server ‘overwrite.cli.url’ =\> ‘[https://mydomain.net/nextcloud](https://mydomain.net/nextcloud)’, ← not confident what it is, but it works ---
**Author:** ![wwe](https://help.nextcloud.com/user_avatar/help.nextcloud.com/wwe/32/72963_2.png) [@wwe](https://help.nextcloud.com/u/wwe)\ **Post date:** [August 26, 2024, 7:05pm UTC](https://help.nextcloud.com/t/problem-accessing-nextcloud-from-behind-a-reverse-proxy-server/137615/11 "2024-08-26T19:05:21Z")