- Vom Hirn ins Terminal seit 1998.

Archives for 2022

Add Virtual Machine to NetBox with an Ansible playbook

In this blog post I'm showing how to get a Virtual Machine, defined in an Ansible inventory file, into the NetBox DCIM (Data Center Information Management) tool.

NetFlow with Elastic-Stack

This blog post shows how to setup a NetFlow collector with Elastic-Stack, Fleet and Elastic-Agent. NetFlow data is sent by a Cisco ASA Firewall cluster.

Technischer Schutz und Prozesse bei Datenlecks

In diesem Blog-Post beschreibe ich meine technischen Schutzmaßnahmen (Email) und Prozesse, wenn ich von einem Datenleck betroffen bin.

Just a quick announcement: Die Mastodon-Instanz ist freigeschaltet. Viel Spass ;)

Cisco Wireless Intrusion Detection Events to Elastic-Stack

In this blog post I'm showing how to get Wireless Intrusion Detection Events from Cisco's WIDS included in Cisco's Wireless Controllers into an Elastic-Stack.

802.1X Switch port is amber when only IP Phone is connected

When 802.1X (wired) is configured on a 3750G switch, the port LED is amber when only an IP Phone is connected (mab). When connecting on the IP Phone a downstream device like a laptop (dot1x), the port LED goes to green.

Login-Block (DoS and Dict-Attack Protection) in Cisco IOS

Cisco offers a method to protect against DoS (Denial-of-Service) and Dictionary attacks for IOS devices called Login-Block.

Update Schneider-APCUPS firmware with Linux

In this blog post I'm showing how to update a Schneider-APC UPS with Linux.

Mapping of IP addresses blocked by Russia

Mapping of IP addresses blocked by Russia

Werbeemails aufgrund LinkedIn Profils

Werbeemails aufgrund LinkedIn Profils / SPAM mails due to LinkedIn Profile.

Tor project / Tor bridge

Tor project / Tor bridge.

New fiber optics cables for my network

New fiber optics cables for my network. OM4, LC/LC connectors, 4x1 Gigabit link.

The 90’s reported in and delivered a phone book

The 90's reported in and delivered a phone book.

Synology DiskStation to Cisco Core Switch redundant setup with LACP

Configuration of LCAP (Link Aggregation Control Protocol) for Synology DiskStation and Cisco Switch.

Schneider-APCUPS battery replacement

Small how-to about Schneider-APC UPS battery replacement and setting replacement date in Network management card.