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Configuring SSL Reverse Proxy

Rocket.Chat is a middle tier application server, by itself it does not handle SSL. However, Rocket.Chat works well with several industrial grade, battle-tested reverse proxy servers (see Nginx below, for example) that you can configure to handle SSL.

Note: You must use the outside https address for the value at ROOT_URL in [[Section 3|Deploy-Rocket.Chat-without-docker#3-download-rocketchat]] above. This includes the “https://“ and leave off the port number. So instead of ROOT_URL=http://localhost:3000 use something like https://your_hostname.com

Running behind a Nginx SSL Reverse Proxy

Note: These instructions were written for Ubuntu. For Amazon Linux, the conf file for the proxy goes in /etc/nginx/conf.d/ and needs to have a discrete name ending in .conf and Nginx is installed using yum -y install nginx.

Run this as root:

apt-get install nginx

Add your private key to /etc/nginx/certificate.key

Lock down permissions: chmod 400 /etc/nginx/certificate.key

Add your certificate to /etc/nginx/certificate.crt

Edit /etc/nginx/sites-enabled/default or if you use nginx from docker /etc/nginx/conf.d/default.conf and be sure to use your actual hostname in lieu of the sample hostname “your_hostname.com” below.

# Upstreams
upstream backend {
    server 127.0.0.1:3000;
}

# HTTPS Server
server {
    listen 443;
    server_name your_hostname.com;

    error_log /var/log/nginx/rocketchat.access.log;

    ssl on;
    ssl_certificate /etc/nginx/certificate.crt;
    ssl_certificate_key /etc/nginx/certificate.key;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # don’t use SSLv3 ref: POODLE

    location / {
        proxy_pass http://backend/;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $http_host;

        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forward-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forward-Proto http;
        proxy_set_header X-Nginx-Proxy true;

        proxy_redirect off;
    }
}

Restart Nginx: service nginx restart

Running under Plesk Onyx behind Nginx

Plesk Onyx has now a docker installation and Nginx proxy docker rule generator builtin, that doesn’t support adding custom directives. Disable it and add the rules manually in the additional Nginx directives space. A scheme follows (replace 30000 with your external docker mapped port).

#manual extension docker with socket upgrade begin
location ~ ^/.* {
    proxy_pass http://0.0.0.0:3000;
    proxy_set_header Host             $host;
    proxy_set_header X-Real-IP        $remote_addr;
    proxy_set_header X-Forwarded-For  $proxy_add_x_forwarded_for;

    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_set_header X-Forward-Proto http;
    proxy_set_header X-Nginx-Proxy true;
    proxy_http_version 1.1;

    proxy_redirect off;
}

#extension docker end

Running behind an Apache SSL Reverse Proxy

Note: You must use the outside https address for the value at ROOT_URL in [[Section 3|Deploy-Rocket.Chat-without-docker#3-download-rocketchat]] above. This includes the “https://“ and leave off the port number. So instead of ROOT_URL=http://localhost:3000 use something like https://your_hostname.com

Run this as root:

apt-get update
apt-get install apache2
a2enmod proxy_http
a2enmod proxy
a2enmod ssl
a2enmod proxy_wstunnel

Add your private key to /etc/ssl/private/chat.domain.com.key

Lock down permissions: chmod 400 /etc/ssl/private/chat.domain.com.key

Add your certificate to /etc/ssl/certs/chat.domain.com.crt

Add your intermediate to /etc/ssl/certs/intermediate.ca.pem

Edit /etc/apache2/sites-enabled/rocketchat.conf and be sure to use your actual hostname in lieu of the sample hostname “your_hostname.com” below.

<VirtualHost *:443>

ServerAdmin it@domain.com
ServerName chat.domain.com
ErrorLog /var/log/chat.domain.com_error.log
TransferLog /var/log/chat.domain.com_access.log
LogLevel info
SSLEngine On
SSLCertificateFile /etc/ssl/certs/chat.domain.com.crt
SSLCertificateKeyFile /etc/ssl/private/chat.domain.com.key
SSLCertificateChainFile /etc/ssl/certs/intermediate.ca.pem

<Location />
        Order allow,deny
        Allow from all
</Location>

RewriteEngine On
RewriteCond %{HTTP:Upgrade} =websocket [NC]
RewriteRule /(.*)           ws://localhost:3000/$1 [P,L]
RewriteCond %{HTTP:Upgrade} !=websocket [NC]
RewriteRule /(.*)           http://localhost:3000/$1 [P,L]

ProxyPassReverse / http://localhost:3000/
</VirtualHost>

Restart Apache: service apache2 restart

Running behind a Caddy Reverse Proxy with Free SSL

First, download Caddy

curl https://getcaddy.com | bash

Now Caddy is installed, but you still need a service to run Caddy http server on the background.

You can find services backed by the community here

You must have at least the port 443 opened so the Caddy server will request an SSL certificate from Let’s Encrypt

You can also open the port 80 to redirect http requests to https.

Open /etc/caddy/Caddyfile

Insert

your_domain.com {
        proxy / 127.0.0.1:3000 {
                proxy_header X-Forwarded-Proto {scheme}
                proxy_header X-Forwarded-For {host}
                proxy_header Host {host}
                websocket
        }
}