cheat-sheet

UFW Cheat Sheet – Add new allow rules, block IP addresses

Add a Port $ sudo ufw allow 33/tcp Tips: When looking at rules, use ufw status numbered because it gives line numbers with output that

Tip for Installing Packages on OpenSUSE

Here are some tips, tricks, and traps when working openSUSE How to install Software There’s no apt or yum, so use zypper. Here is an

IPv6 Cheat Sheet

IPv6 is a lot less complicated that you think. Once you get past the hex codes and once you see that basic concepts and tools

Basic Asterisk Troubleshooting – checking service, SIP Peers (trunk), and extensions

This is a document that assists with the troubleshooting of an Asterisk based PABX that is not working properly. It was done based on a

Supervisor Cheat Sheet

Cheats Close all running supervisor jobs supervisorctl stop all Errors on Forge Below is an error after deleting a site. This is related to this

SNMP Configuration (snmpd.conf) Cheat Sheet

A curated list of SNMP commands and parameters. The article aims to highlight differences between RedHat (e.g. AlmaLinux/CentOS) based distributions and Debian (e.g. Ubuntu) based

Kopano Community Edition End of Life Announcement 08 March 2023 Kopano community edition has unfortunately been discontinued: https://forum.kopano.io/topic/4069/statement-regarding-the-closure-of-the-kopano-community-forum-and-the-end-of-the-community-edition In order to protect yourself, it’s best

Subnet Mask Cheat Sheet

Without further adieu: Addresses Hosts Netmask Amount of a Class C /30 4 2 255.255.255.252 1/64 /29 8 6 255.255.255.248 1/32 /28 16 14 255.255.255.240