Monthly Archive: January 2023

How the internet really works

IP Transit and Tiers of Transit Providers In this article, we will talk about IP Transit and Tiers of Transit Providers. The Internet is made up of a diverse range of Internet Service Providers...

BGP and RPKI and why you should implement it

The benefits of implementing BGP and RPKI for network security In this article, I will explain the benefits of implementing RPKI within your BGP network. The implementation of Border Gateway Protocol (BGP) and Resource...

Measuring bandwidth usage

An overview of different methods Bandwidth usage measurement can be a confusing topic, with various methods available and each one having its own advantages and limitations. Among the most commonly used methods is the...

What is umask and how it works

What is umask and how does it work? Umask, short for user mask, is a command used in Linux operating systems to set the default permissions for newly created files and directories. It is...

List active Exchange mailboxes in Exchange

List active Exchange mailboxes using PowerShell If you have been following the wansec blog for some time, you know we like Microsoft Exchange. To find the number of active (users, shared) mailboxes, and distribution...