Cyber Security

Total 5 Posts
Cyber security refers to the body of technologies, processes, and practices designed to protect networks, devices, programs, and data from attack, damage, or unauthorized access. Cyber security may also be referred to as information technology security.

SSH GeoBlocker

The sshGeoBlocker bash script uses geoiplookup to get the location of an IP address from a MaxMind GeoLite2 database. Combining this script with a fail2ban sshd jail, IP addresses can be blocked after a certain number of unsuccessful connection attempts.

SSL Certificates with LetsEncrypt

This tutorial explains how to use LetsEncrypt and acme.sh to create SSL certificates. In addition, snippets for a secure SSL configuration and secure transport headers are provided and explained. A hybrid solution, using RSA and ECDSA certificates, will be created.

Encrypted Passwords in Bash

encpass.sh is a lightweight library to use encrypted passwords in bash scripts. Secrets can be encrypted at runtime and then used, decrypted, in scripts.

Protecting Nginx with Fail2ban

An introduction on how to use fail2ban to protect nginx against bots and brute-force attacks.

Pythonic Sherlock

Sherlock, an open-source tool, named after the famous detective Sherlock Holmes, is a neat little Python tool that can be used to hunt down social media accounts of a specific username on commonly used internet sites and social networks, such as Facebook, YouTube, Vimeo, Spotify and so forth.
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