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Posts published in “Network”

PacketScript overview: A Lua scripting engine for in-kernel packet processing

Shahriar 0

As I was surfing the net, trying to find a way to prototype network protocols or features in Linux. I stumbled upon PacketScript. PacketScript is the an implementation of the Lua VM inside Linux kernel. Such implementations aren’t new ,luak and lunatik have been existed for some time. However what makes PacketScript different is the ability to mangle network packets with Lua. Not just running Lua code in kernel. as a matter of fact PacketScript uses lunatik underneath as its…

A Tour of Mount in Linux

Shahriar 0

I had windows 10 installed on my laptop because of serious incompatibility of ROG laptops with Linux and my desire to play some games after years of living in bash! This continued for a year and I really like windows 10 cool features like WSL and Hyper-V (with Docker!), however being in love with rolling-release distros and being fed up with windows in the past year. And the fact that I was yearning for terminal, I installed Solus OS earlier…

Cisco switch security features cheatsheet

Shahriar 0

Cisco switches (running IOS) have plenty of features that are critical to modern networks. Some are Cisco security features that eliminate several important attack vectors on layer 2. This is arguably the most important defense mechanism because ACLs and security mechanisms on software (layer 7) will sometimes fall short protecting the network because of the extreme complexity of communication up in this layer. So the earlier you close the holes the better! As an example security features like protected ports can…

Active Directory Certificate Services Overview and Migration

Shahriar 0

Active Directory Certificate Services Active Directory Certificate Services (AD CS) is a role in Windows Server which allows you to fully implement a PKI infrastructure. AD CS also provides templates and web services for issuance and management of certificates. In this guide we will cover basic concepts of AD CS and provide a method for migration of this service to another windows server . This won’t be an in depth guide because you can find the information you need in…

Useful Configs for NGINX

Shahriar 2

After posting the first of my linux SysAdmin quick config sample series titled “Useful Configs for squid” (which you can read here). I decided to write another post, this time about the powerful and popular web/cache server NGINX! I spent quite some time reading through nginx official docs and other blogs/websites while testing each configuration directive in different scenarios. Some of the options presented in this post do not have good or any documentation. I hope you find them useful!…