How To Install libapache2-mod-rpaf on Ubuntu 18.04
Introduction
In this tutorial we learn how to install libapache2-mod-rpaf on Ubuntu 18.04.
What is libapache2-mod-rpaf
libapache2-mod-rpaf is:
rpaf is short for reverse proxy add forward.
rpaf is for backend Apache servers what mod_proxy_add_forward is for frontend Apache servers. It does exactly the opposite of mod_proxy_add_forward written by Ask Bjorn Hansen.
It changes the remote address of the client visible to other Apache modules when two conditions are satisfied. First condition is that the remote client is actually a proxy that is defined in httpd.conf. Secondly if there is an incoming X-Forwarded-For header and the proxy is in its list of known proxies it takes the last IP from the incoming X-Forwarded-For header and changes the remote address of the client in the request structure.
There are three methods to install libapache2-mod-rpaf on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install libapache2-mod-rpaf Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install libapache2-mod-rpaf using apt-get by running the following command:
sudo apt-get -y install libapache2-mod-rpaf
Install libapache2-mod-rpaf Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install libapache2-mod-rpaf using apt by running the following command:
sudo apt -y install libapache2-mod-rpaf
Install libapache2-mod-rpaf Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install libapache2-mod-rpaf using aptitude by running the following command:
sudo aptitude -y install libapache2-mod-rpaf
How To Uninstall libapache2-mod-rpaf on Ubuntu 18.04
To uninstall only the libapache2-mod-rpaf package we can use the following command:
sudo apt-get remove libapache2-mod-rpaf
Uninstall libapache2-mod-rpaf And Its Dependencies
To uninstall libapache2-mod-rpaf and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove libapache2-mod-rpaf
Remove libapache2-mod-rpaf Configurations and Data
To remove libapache2-mod-rpaf configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge libapache2-mod-rpaf
Remove libapache2-mod-rpaf configuration, data, and all of its dependencies
We can use the following command to remove libapache2-mod-rpaf configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge libapache2-mod-rpaf
References
Summary
In this tutorial we learn how to install libapache2-mod-rpaf package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
