Ubuntu: enable the firewall and manage it with UFW
In this tutorial, I will explain how to activate the firewall on a computer with Ubuntu and manage it with UFW. UFW for Uncomplicated Firewall is a simplified Netfilter …
Tag
Security
60 articles
Windows Server: disable a cipher suite
In this tutorial, I will walk you through how to disable a cipher suite also call cipher. If you arrive on this tutorial by a search engine, there is a good chance that …
Crowdsec: protecting Windows servers
In a previous tutorial, I explained how toprotect your Linux servers with Crowdsec in order to block “malicious” traffic. For almost 2 months now, the Crowdsec version …
Active Directory: change the KrbTgt account password
In this tutorial, I will explain how to change the password of the KrbTgt account. Before explaining how to change the password of this account, I will give you some …
Active Directory: Secure Domain Join to Domain Admins
In this tutorial, we will address a security point on an Active Directory environment, which is the domain joining of computers. What you need to know (some …
GPO: block programs and prevent software installation - software restriction
In this tutorial, I will explain how by Group Policy (GPO) in an Active Directory environment , block the launch of programs and prevent the installation of certain …
Active Directory: harden the security of your environment
In this tutorial dedicated to Active Directory and security, I will give you some tips to harden the level of security in order to be less vulnerable to attacks. The …
GPO: disabled SMBv1
In this tutorial, I will walk you through how to disable SMBv1 support add-on using Group Policy. To disable full SMBv1 support, you must act on the two SMB components …
Crowdsec: secure your web server network - installation and configuration
In this tutorial, I will explain to you how to secure the network part of your web servers with Crowdsec. The tutorial is made on Ubuntu 20.04 Crowdsec overview Crowdsec …
Active Directory: secure passwords with Lithnet Password Protection for Active Directory
In this tutorial, I will tell you how to harden password security with Lithnet Password Protection for Active Directory . Lithnet Password Protection forActive Directory …
PrintNightmare: secure print configuration
In this “little” tutorial, I will show you how to set up a “secure” configuration. Since the publication of the PrintNightmare flaw, Microsoft has deployed several …
KB5005033: Allow non-administrators to install printer drivers
To fight against the flaws that affect the print spooler on Windows, the KB5005033 of August 2021, modifies the behavior of Windows 10 by requesting the administrator …