Amongst the eight Windows patches in this week's Patch Tuesday update is one touching on a service you may not have thought about for quite a while: Telnet.
Tuesday picture from Shutterstock
The chances are good that you don't have Telnet enabled on your server — it was installed (but not enabled) by default on Windows Server 2003, but hasn't been installed automatically on any subsequent versions of Windows. Telnet has long been considered a risky means of communicating as it doesn't offer any encryption or authentication options, though it remains in active use on some industrial equipment.
This round of patches marks the first under Microsoft's new policy of only pre-announcing patch plans to Premium customers. One thing that hasn't changed: you're going to have to reboot.