Unifi VPN – L2TP Connection Attempt Failed After Installing KB5009543
Microsoft released a path KB5009543 during Patch Tuesday of 2022 which is resulting in Unifi VPN connections presenting you with the message, L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer. Other vendors besides Unifi like, Sonicwall, Ciso Meraki and WatchGuard Firewalls are experiencing the same VPN connection access error.
Microsoft confirmed the issue, saying:
“After installing KB5009543, IP Security (IPSEC) connections which contain a Vendor ID might fail. VPN connections using Layer 2 Tunneling Protocol (L2TP) or IP security Internet Key Exchange (IPSEC IKE) might also be affected.”
Microsoft has released an out-of-band fix for the issue and adding the following statement.
… Read the restOut-of-band update to address issues after installing the January Windows update
Microsoft is releasing Out-of-band (OOB) updates today, January 17, 2022, for some versions of Windows. This update addresses issues related to VPN connectivity, Windows Server
Online Awareness Challenge: Social Media Red Flags Crossword
Introduction
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How to track file change events on your Windows File Server
In this tutorial you will be shown how to configure group policy to track file change events on your windows file server.
In the event of a data breach, businesses often want to know who accessed the data and when. They also want to know what kind of changes were made. With this method you can track file changes in your Windows file server. This will help you prevent insider threats by knowing who is accessing files they don’t need access to. Plus, it can help during data breach investigations by proving who changed what.
Step 1: Enabling the ‘Audit object access’ policy
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Remote connect to your DC and Launch the Group Policy Management console (Run –> gpedit.msc)
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Create a new GPO named “Server Audits” and apply it to the root of your domain.
3. Right click “Server Audits” policy followed by clicking on Edit within the menu.
4. Navigate … Read the rest
KB5009624 or KB5009595 Virtual Machine could not be started.
This month’s Patch Tuesday (January 11th, 2022) has featured two updates that appear to break Hyper-V on Windows Server 2012 R2 servers. If you installed either KB5009624 or KB5009595 and are receiving “Virtual Machine {VM NAME} could not be started because the hypervisor is not running”, then you should uninstall both updates and restart.
The following events will also be visible in the System Event Logs:
Source: Hyper-V-Hypervisor
Error ID: 80
Hypervisor launch failed; The operating systems boot loader failed with error 0xC00000BB.
Source: Hyper-V-VMMS
Error ID: 15350
The virtualization infrastructure driver (VID) is not running.
Source: Hyper-V-VMMS
Error ID: 15160
‘MACHINE NAME’ failed to restore virtual machine state.
Workaround
There is no permanent solution currently available. To fix this problem, you need to remove the update from the Hyper-V host by doing the following:
1) Open elevated command prompt on the Hyper-V Host
2) Run “wusa /uninstall /kb:5009624”
3) … Read the rest
How To Enable Root Login And SSH For Ubuntu 20.04
In this tutorial you will be shown how to enable Root login and SSH for Ubuntu 20.04. Root access is the administrative user that you can use to access and edit all of the files on your server (this includes system-critical files). In some situations, for proper installation of software on Ubuntu 20.04 using root access will make things easier.
Let’s get started
- Log into your Ubuntu 20.04 server and run the following command to apply a password to the root user.
sudo passwd root
2. Now, let’s edit your SSH config to allow root to be able to SSH into your Ubuntu 20.04 server.
sudo nano /etc/ssh/sshd_config
3. Move down towards the end of the config file and type in the following.
PermitRootLogin Yes
4. Use CTRL+X and you will be prompted to save the config.
5. You should be prompted with the question to Save Modified Buffer? Type … Read the rest
How To Install Plex Media Server On Ubuntu 20.04
In this tutorial you will be shown how to install Plex Media Server on Ubuntu 20.04. Plex Media Server is a convenient way to organize and enjoy your media. Used in combination with modern technology, it is easy to navigate and access your content anywhere — whether at home, in the car, or on a boat in the ocean.
Ubuntu 20.04 Server Requirements
- A local physical server or VPS with Ubuntu 20.04.
- Minimum of 4 CPU cores.
- Minimum of 4GB ram.
- Minimum of 30GB storage.
- Minimum of 1 Network Adapter
- Ability to SSH into server as Root user.
- Fully Patched Ubuntu 20.04 Server
Things To Note
- Single 720p transcode: Intel Core i3 3.0 GHz
- Single 1080p transcode: Intel Core i5 3.0GHz
- Single 4K transcode: Intel Core i7 3.2GHz
There is a great development for Ubuntu Linux users. Snaps , makes it possible to simplify the entire process of … Read the rest
How To Install Nessus On Ubuntu 20.04
In this tutorial you will be shown how to install and configure Tenable’s Nessus Vulnerability Scanner on Ubuntu 20.04.
Nessus is a tool that checks computers to find vulnerabilities that hackers COULD exploit. Nessus works by testing each port on a computer, determining what service it is running, and then testing this service to make sure there are no vulnerabilities in it that could be used by a hacker to carry out a malicious attack.
Server Requirements
- A local physical server or VPS with Ubuntu 20.04.
- Minimum of 4 CPU cores.
- Minimum of 4GB ram.
- Minimum of 30GB storage.
- Minimum of 1 Network Adapter
- Ability to SSH into server as Root user.
- Fully Patched Ubuntu Server
Now Let’s Install Nessus on Ubuntu 20.04
- Open your Browser and click on Nessus Downloads to review latest releases. In my case the latest release for this tutorial is Nessus-10.0.2-ubuntu1110_amd64.deb. Download the latest
This Year You Should Expect Stronger Cyber Security Regulations
The government is cracking down on cyber security. According to The Wall Street Journal, and companies are expected to comply with the more stringent cyber security regulations.
In early 2021, a SolarWinds and Microsoft hack occurred. They have been linked to Russia and China, respectively. President Joe Biden has issued a presidential executive order that mandates cyber attack reporting in some critical infrastructure sectors. The confirmation of a new National Cyber Director has also occurred. He is Chris Inglis and will oversee the cybersecurity efforts of the U.S. government.
Later in 2021, Kaseya and JBS SA were hit by ransomware. This is a big deal for critical infrastructure companies, because more regulation will likely follow. According to Sidley Austin LLP Partner Sujit Raman: “I think we’re going to see more regulations, because the government is going to have to step in and say, ‘Look, this is a national security … Read the rest
How To Fix Printer Shares After PrintNightmare Patches Are Installed
In this tutorial you will be shown how to fix printer shares after PrintNightmare patches are installed. The PrintNightmare patches have been the bane of my existence and I’m sure others have felt its pain as well. There is many articles going about how to remove the patches to resolve the issue but we need to move forward with patches in place and not remove patches to resolve the issue.
Step 1
Make sure to update all your servers and workstations with the latest patches.
Step 2
Log into your Active Directory / Domain Controller Server.
- Take note, I am assuming you would have a dedicated policy for your printers.
- Click Start.
- Type gpedit.msc and press Enter to open the Group Policy Editor.
- Locate and delete the existing printer policy or policy’s.
Step 3
Now log into the server that has the print management services installed and printers … Read the rest
How to remove domain group policy from a windows computer
Domain group policies are a set of software restrictions that network administrators can create. The network administrators will specify rules for what users can and cannot do on the computer. For example, they can set a rule to make sure that people use complex passwords. Domain group policies help ensure that network administrators are the only ones who can modify computer settings in order to keep all of the company’s equipment under one specific standard.
This tutorial will show you how to solve an issue that occurs when older domain based group policy’s don’t remove themselves and still cause problems with your desktop. For example, if you delete a printer from the Group Policy Server and refresh it and then try to manually remove it from the desktop, it keeps coming back even after successfully running gpupdate /force on the desktop. This is because the desktop is having an issue … Read the rest
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