Reverse Proxy

References

http://www.apachetutor.org/admin/reverseproxies

http://geronimo.apache.org/GMOxDOC11/configure-apache-httpd-as-a-reverse-proxy-modproxy.html

Enable (Ubuntu 12.04)

a2enmod proxy proxy_http

Directives

ProxyRequests: Do not use unless servers secured - will enable open, forward proxy

ProxyPass: enable reverse proxy, so traffic will be passed to the app server.

Example:

ProxyPass / http://internal2.example.com/

ProxyPass /app1/ http://internal1.example.com/

ProxyPassReverse: when passing back response to client, reversely change the internal host back to outside name