How To Install postfwd on Kali Linux

Introduction

In this tutorial we learn how to install postfwd on Kali Linux.

What is postfwd

postfwd is:

Postfwd is written in perl to combine complex postfix restrictions in a ruleset similar to those of the most firewalls. The program uses the postfix policy delegation protocol to control access to the mail system before a message has been accepted. It allows you to choose an action (e.g. reject, dunno) for a combination of several smtp parameters (like sender and recipient address, size or the client’s TLS fingerprint).

There are three methods to install postfwd on Kali Linux. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install postfwd Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install postfwd using apt-get by running the following command:

sudo apt-get -y install postfwd

Install postfwd Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install postfwd using apt by running the following command:

sudo apt -y install postfwd

Install postfwd Using aptitude

If you want to follow this method, you might need to install aptitude on Kali Linux first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.

sudo aptitude update

After updating apt database, We can install postfwd using aptitude by running the following command:

sudo aptitude -y install postfwd

How To Uninstall postfwd on Kali Linux

To uninstall only the postfwd package we can use the following command:

sudo apt-get remove postfwd

Uninstall postfwd And Its Dependencies

To uninstall postfwd and its dependencies that are no longer needed by Kali Linux, we can use the command below:

sudo apt-get -y autoremove postfwd

Remove postfwd Configurations and Data

To remove postfwd configuration and data from Kali Linux we can use the following command:

sudo apt-get -y purge postfwd

Remove postfwd configuration, data, and all of its dependencies

We can use the following command to remove postfwd configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge postfwd

Dependencies

postfwd have the following dependencies:

• adduser
• libnet-dns-perl
• libnet-server-perl
• lsb-base
• perl

References

• postfwd website

Summary

In this tutorial we learn how to install postfwd package on Kali Linux using different package management tools: apt, apt-get and aptitude.