a wandersick's Tech Notes

A quick Windows batch CLI tool to change or randomize network adapter MAC address for security, or to work around usage limit of public Wi-Fi hotspots, either auto or manually. The command – chmac – changes MAC address in an easy-to-use interactive console alongside CLI parameters Named after getmac and chmod,  chmac  is a command-line-interface (CLI) tool for Windows that changes or randomizes MAC addresses of specified network adapters, e.g. for a client device to reuse public Wi-Fi hotspot that has exceeded usage limit for the day (e.g. hotel, restaurants), or to enhance security. An easy-to-use interactive console is available, alongside command-line parameters, e.g. for scheduling jobs with Task Scheduler. ChMac also has built-in support for recurrence.  Go to Download Also on Chocolatey:  choco install chmac  / winget:  winget install chmac For a quick start, refer to Examples section below; for screenshots, refer to Sc...

This is a quick guide on how to resolve an occasional problem that could happen to neglected Sophos UTM firewall with default settings, where updates are automatically downloaded to device, filling up storage after some time. An email alert similar to the below is sent to administrator when it happens: From: Firewall Notification System [[email protected]] Sent: 18 June 2016 11:58 PM To: Administrator [[email protected]] Subject: [SOPHOS][INFO-150] Root partition is filling up - please check Root partition is filling up - please check. Current usage: 86% -- System Uptime      : 362 days 1 hour 2 minutes System Load        : 0.05 System Version     : Sophos UTM 9.210-20 Please refer to the manual for detailed instructions. To solve it, one way is to SSH into Sophos UTM firewall using root login Remove content under Sophos update directory (Main f...