Introduction on CrowdSec CrowdSec is a free, open-source and collaborative IDS (Intrusion Detection System) and combined with a bouncer an IPS (Intrusion Prevention System). CrowdSec Analyzes behaviors, respond to attacks & share signals across the community by analyzing your logs. By leveraging on this community it benefits from all the […]
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How to setup NGINX reverse proxy for Microsoft Exchange
Introduction on NGINX NGINX is a modern fast webserver which also can be used as an reverse proxy server. A proxy server is a go‑between or intermediary server that forwards requests for content from multiple clients to different servers across the Internet. A reverse proxy server is a type of […]
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How to verify your SSL/TLS Certificate for IMAP/POP3/SMTP with OpenSSL
Introduction After installing an SSL/TLS certificate on your mail server you should check if it is correctly configured. The OpenSSL command offers a easy way to check and verify your certificate chain. For this guide to work your system needs to have the openssl or libressl library installed. All modern […]
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Backup VMware ESXi host with PowerCLI
Introduction to VMware ESXi As you should know right know having backups of your system is a critial part of protecting your data. Although VMware ESXi host don’t contain data themselve it still is a good practice to backup your configuration to make disaster recovery alot easier and faster. In […]
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Automate PfSense Configuration Backup via curl
Introduction to PfSense Configuration Backup Configuring backups is one of the critical parts of a healthy system environment. PfSense has multiple options to setup configuration backups. Since recent updates pfSense has the option to configure the AutoConfigBackup Service that is build in the software. This is a great and easy […]
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