The Extended Security Updates (ESU) program for Windows 10 provides users with a more secure option to continue using their Windows 10 PCs after October 14, 2025, while they transition to Windows 11. The consumer ESU program can’t be used by commercial devices. For details, see https://www.microsoft.com/en-us/windows/extended-security-updates. You’ll need to […]
Tips & Techniques
35 posts
We recently replaced our Syslog Server and needed to add logging for a Firepower running ASA. Here’s a rundown on how we set it up in Ubuntu 24.04: On your Ubuntu Server: Edit the /etc/rsyslog.conf and enable UDP syslog reception. For security purposes, consider adding AllowedSender. In this case, the […]
Microsoft 365 Administrators should check Sign-in logs regularly to find suspicious log-in attempts. In the example below, we do not have any users in London or New York. These are obviously attempts to hack into a user account. If any of these unrecognized log-in attempts were successful, it might indicate […]
The default behavior for Microsoft 365 is to allow users to forward mail to internal recipients only. The setting “Automatic forwarding” controls this. Security > Policies & rules > Threat Policies > Anti-spam policies > Anti-spam outbound policy (Default) The problem, however, is the Outlook Web Interface will still allow […]
We recently installed a new Windows 2022 Server and joined it to a Domain. After adding it to the Domain, everything look good and the network was identified as Domain as it should. Upon reboot, it was no longer identified as being on a Domain network and fell back to […]
I recently upgraded an Ubuntu 14.04 Server to 16.04. I immediately noticed the root mail being spammed with error e-mails as below: From: Cron Daemon [mailto:root@jack] Sent: Wednesday, March 13, 2019 4:09 PM To: root@jack Subject: Cron <root@jack> [ -x /usr/lib/php/sessionclean ] && /usr/lib/php/sessionclean /usr/lib/php/sessionclean: 37: /usr/lib/php/sessionclean: arithmetic expression: expecting […]