How does SSL work with reverse proxy?

What is ProxyPass and proxy Pass reverse?

If you are new to Apache VirtualHost configuration - you need to understand ProxyPass and ReverseProxyPass directives as this will be core to learning it.

So what is proxy pass or Reverse proxy pass

Reverse Proxy Pass redirect your request to the other URL. Proxy Pass forward your request to the other location. For example: Your application is running on localhost:8080, let's say your application URL looks like this: so the request would look like this. Now there is another URL (let's say ) and application there too is running on localhost:8082 . So now your request to that would look like this: Let's take a reverse proxy now: ProxyPass directive does just that. In case of reverse proxy configuration if you give ReverseProxyPass /test to apache configuration, it will forward the request to the target. So this way you will end up with two different URL and. What is Apache virtual host? Well basically Apache virtual host is a server which can respond to requests under specified domain name. Apache's Virtual Host facility allow you to define various domains and sub-domains under one logical web site. The rest of configurations are taken care by Apache. You can also add various headers in any of your Virtual Hosts configurations.

Apache's virtual host facility helps you to maintain separate set of rules for different applications running one machine. There may be multiple VirtualHost entries, one for each application running on the machine, usually named according to the hostname where that application runs. If a name is passed as a server option, it must match the requested hostname exactly. If a port is passed as an option, it must match what the name says on the port number.

How to configure Apache reverse proxy with SSL?

I am using Apache 2.

4.6 and I need to configure it as reverse proxy for other server which is running on Linux.

I used this document. And following changes are done in it. . # These two ServerName statements are required for proper proxying. ServerName example.com:443 # SSL configuration. SSLEngine on. SSLProtocol all -SSLv2 -SSLv3. SSLCipherSuite ALL:!ADH:!LOW:!EXP:!MD5:!PSK:!RC4:!RC2:!IDE!SEED:!ECDH:!NULL. SSLCertificateFile /etc/apache2/conf.d/ssl.crt
SSLCertificateKeyFile /etc/apache2/conf.key . ProxyPass. ProxyPassReverse. .
. I tested this with the help of this website. And it shows me a message like "The server has an insecure configuration for SSL. It's highly recommended to set up a proper security protocol (eg TLS or STARTTLS) and an SSL certificate."
My question is how to fix this problem? You're not telling your server to start with SSL, you're telling your client to start with SSL. You want to have your server do SSL, which it can do.

The easiest way to do that is to add a NameVirtualHost directive before the VirtualHost that handles HTTPS, which the proxy uses as a fallback. In your case: NameVirtualHost default:443

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