Set up a Firewall with UFW

Tutorials / Linux Notes

2020.08.07

Set up a Firewall with UFW

Uncomplicated Firewall (UFW) is a simplified firewall management interface that hides the complexity of lower-level packet filtering technologies such iptables and uftables.

Basics of load balancing with HAProxy

Tutorials / Linux Notes

2020.04.05

Basics of load balancing with HAProxy

HAProxy is free, open source software that provides a high availability load balancer and proxy server for TCP and HTTP-based applications. Its most common use is to improve the performance and reliability of a server environment by distributing the workload across multiple servers (e.g. web, application, database).

Setup an IKEv2 server with StrongSwan

Tutorials / Linux Notes

2020.01.09

Setup an IKEv2 server with StrongSwan

IKEv2, or Internet Key Exchange v2, is a protocol that allows for direct IPSec tunneling between two points. In IKEv2 implementations, IPSec provides encryption for the network traffic. IKEv2 is natively supported on some platforms (OS X 10.11+, iOS 9.1+, and Windows 10) with no additional applications necessary, and it handles client hiccups quite smoothly.

Enable TCP BBR on Ubuntu server

Code Snippet / Linux Notes

2019.12.19

Enable TCP BBR on Ubuntu server

TCP BBR is a TCP congestion control algorithm developed by Google. It tackles shortcomings of traditional TCP congestion control algorithms (Reno or CUBIC). According to Google, it can achieve orders of magnitude higher bandwidth and lower latency.

Setting up snap Nextcloud on Ubuntu

Tutorials / Linux Notes

2019.12.05

Setting up snap Nextcloud on Ubuntu

Nextcloud, a fork of ownCloud, is a open-source file sharing server that allows you to store your personal content, like documents and pictures, in a centralized location, much like Dropbox. It also returns the control and security of your sensitive data back to you, thus eliminating the use of a third-party cloud hosting service. Here, I'm going to walk through the installing and configurations on Ubuntu 18.04 using the snappy packaging system.

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