How To Install ssldump on CentOS 8

ssldump is SSL/TLS network protocol analyzer

Introduction

In this tutorial we learn how to install ssldump on CentOS 8.

What is ssldump

The ssldump program is an SSL/TLS network protocol analyzer. It identifies TCP connections on the chosen network interface and attempts to interpret them as SSL/TLS traffic. When ssldump identifies SSL/TLS traffic, ssldump decodes the records and displays them in a textual form to stdout. And if provided with the appropriate keying material, ssldump will also decrypt the connections and display the application data traffic. This program is based on tcpdump, a network monitoring and data acquisition tool.

We can use yum or dnf to install ssldump on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install ssldump.

Install ssldump on CentOS 8 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install ssldump using dnf by running the following command:

sudo dnf -y install ssldump

Install ssldump on CentOS 8 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

CentOS Linux 8 - AppStream                                       43 kB/s | 4.3 kB     00:00    
CentOS Linux 8 - BaseOS                                          65 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - ContinuousRelease                               43 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - Extras                                          23 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - FastTrack                                       40 kB/s | 3.0 kB     00:00    
CentOS Linux 8 - HighAvailability                                36 kB/s | 3.9 kB     00:00    
CentOS Linux 8 - Plus                                            24 kB/s | 1.5 kB     00:00    
CentOS Linux 8 - PowerTools                                      50 kB/s | 4.3 kB     00:00    
Extra Packages for Enterprise Linux Modular 8 - x86_64           13 kB/s | 9.2 kB     00:00    
Extra Packages for Enterprise Linux 8 - x86_64                   24 kB/s | 8.5 kB     00:00    
Metadata cache created.

After updating yum database, We can install ssldump using yum by running the following command:

sudo yum -y install ssldump

How To Uninstall ssldump on CentOS 8

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

sudo dnf remove ssldump

ssldump Package Contents on CentOS 8

/usr/lib/.build-id
/usr/lib/.build-id/f7
/usr/lib/.build-id/f7/ac4c65f5843996a6387a4f163b40145d0f396d
/usr/sbin/ssldump
/usr/share/doc/ssldump
/usr/share/doc/ssldump/CREDITS
/usr/share/doc/ssldump/ChangeLog
/usr/share/doc/ssldump/HOWTO
/usr/share/doc/ssldump/README
/usr/share/doc/ssldump/README.md
/usr/share/licenses/ssldump
/usr/share/licenses/ssldump/COPYRIGHT
/usr/share/man/man1/ssldump.1.gz

References

Summary

In this tutorial we learn how to install ssldump on CentOS 8 using yum and dnf.