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Setup 2FA on centos 8/fedora/rhel based distros
Important note!! If you are facing issues with logging in, check if selinux is running and either disable it or change the contexts. selinux blocks reading your google-authenticator key files. trial and error dnf…
Docker day 1
This article is a work in progress. Email your suggestions to kevin@fivemin.net. Build, swap and remove infrastructure in a text file Docker containers are a set of tools to quickly and easily build, swap out and remove…
What is the difference between tagged and untagged vlan ports? Tagged = trunk ports, untagged = access ports
VLAN-enabled ports are generally categorized in one of two ways, tagged or untagged. These may also be referred to as “trunk” or “access” respectively. The purpose of a tagged or “trunked” port is to pass traffic for…
List of networking management software
# software Age Link Comment 1 SNMP-C 23/01/1990 https://www.castlerock.com/products/snmpc/ # software Age Link Comment
why is the command line interface needed cant we just write configurations by hand?
Sure! If you know the configuration language its easy to write a configuration file. Command line interfaces are often used to format your configuration file in a very specific manner, one can think of the CLI as an…
What is the difference between console ports and management ports on switches?
Console ports enable console connections using, usually, a USB to db9 connector. These ports are usually used when first setting up a switch were the technician has physical access to the switch. Management ports are…
Enable copy paste in libvirt guests, Install spice-vdagent using libvirt centos 8
This post is a part of “up and running with libvirt guests series” Tldr: see below instructions for centos 8 myLibvirtHost# virsh destroy myguest myLibvirtHost# virsh edit --domain myguest # ADD BELOW CODE SNIPPET…
What is a nonblocking switch fabric / architecture?
Switchports are tied to a back-plane or “fabric”, the back-plane coordinates switching between ports and end devices. Sometimes there is a discrepancy between the processing power of the back-plane and its switchports:…