Firewall Archives • Helge Klein

OPNsense HowTo: IPv4 & IPv6 Internet Connectivity With FTTH Modem

This article explains how to configure OPNsense as your (only) internet router in a fiber to the home (FTTH) setup.

Error Connecting to C$: Device Attached to the System is not Functioning

When I tried to connect to the administrative file share C$ on my wife’s computer I got the error A device attached to the system is not functioning. The other way round worked without a hitch, i.e. I could access my laptop’s C$ share from my wife’s computer. When I tried to connect to her […]

Remote Management of Windows PCs in an Isolated Security Zone

With the advent of BYO it has become fashionable to regard PCs as untrusted devices that should be isolated in a dedicated security zone.

The Unmanageable File Server

I had an interesting little case to solve at home recently when my headless file server suddenly would not accept RDP connections any more. It still worked flawlessly as a file server, so I ignored the problem for a while.

Tag: Firewall

OPNsense HowTo: IPv4 & IPv6 Internet Connectivity With FTTH Modem

Error Connecting to C$: Device Attached to the System is not Functioning

Remote Management of Windows PCs in an Isolated Security Zone

The Unmanageable File Server