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Firewall

How to set PassivePortRange and PassiveIP in pure-ftpd on Ubuntu to secure the app!

Introduction Hi guys, We will talk about setting PassivePortRange and PassiveIP in pure-ftpd. If you run a firewall on your Linux server and want to...

Pfsense High Availability

This post is about pfSense High Availability This recipe describes a simple three interface HA configuration. The three interfaces are LAN, WAN, and Sync. This...

How to Open Ports in Ubuntu / Debian

Hello friends. If you have a server or a computer you need a Firewall to add an extra layer of security to your system....

How to Install CSF (Config Server Firewall) on CentOS 8

Introduction CSF is a Stateful Packet Inspection (SPI) firewall, Login/Intrusion Detection and Security application for Linux servers. t consists of the firewall itself (CSF) which is...

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