Articles in category: Blog

Cisco SSM On-Prem password recovery procedure

For a Cisco Smart Software Manager Test Drive installation I used the older version 8-202010 and I wanted to perform an upgrade to the latest version 8-202108. And of course it is a test drive, I did not save or wrote down the password :). In this document I'm describing how to perform a password recovery for a Cisco SSM On-Prem installation.

Upgrading Netbox to Version 3.0

Yesterday, the version v3.0 of Netbox was released. Modernized WebUI and Off-canvas sidebar. My first impression: Version v3.0 is awesome! Note: Version v3.0.1 was released on 2021-09-01.

Troubleshooting SFP transceivers and Packet captures

In an older blog post I was writing about "Useful Cisco Commands for Troubleshooting cable problems". In this blog post I'm showing an additional, useful command for Fiber Optics troubleshooting and packet capturing on Cisco switches.

Concept for DNS security with Bind9, Pi-hole and OpenDNS

This is my new concept for DNS security with Bind9, Pi-hole and OpenDNS in my network. Bind9 is used as Enterprise DNS to resolve hostnames and IP addresses in the local area network, Pi-hole and OpenDNS are used for Internet DNS traffic. DNS traffic is passed by Cisco ASA Firewall ACL.

Fritzbox rack mounted

Fritzbox rack mounted on a 19" shelf and it's hardware issues: white description on a white box, no LED on ports for activity, height unit issues, Square wood and Velcro to fix ;)

In case of fire

In case of fire: Leave the building before posting it on social media

Fritzbox on redundant ASA Firewall

Setup of two redundant Cisco ASA firewalls on a Fritzbox cable modem with Non-routed transfer network to keep the "PC-MAC"/"exposed host" configuration on Fritzbox during ASA failover switching

Netbox: New installation (2.8.5) and filling up an empty rack

This is the first part of a series of blog posts covering my new netbox installation. It covers the defining of manufacturers, device types, power panels and power feeds. An UPS, Power Strips and two Cisco switches are added including their Power cabling. As bonus, the Cisco switches are build as Virtual Chassis (Cisco Switch-stack).

Watching You Watch

Princeton University and University of Chicago published a study of the tracking Ecosystem of Over-the-Top TV Streaming Devices

CSAchecker

CSAchecker, a Cisco Security Advisory checker