Tagged: fedora

Software Development 1

Always Update Your Virtual Server

Updating your Virtual Server is a must procedure to ensure that you’ll get the latest update and patches. Almost all of the security problems we encounter on our Virtual Server gets easily fixed by performing an application update.

In the video, I used Yum command’s “yum update” to instruct CentOS to download the latest updates.

Virtualmin is configured to setup DNS zones but this system is not setup to use itself as a DNS server 3

Virtualmin is configured to setup DNS zones but this system is not setup to use itself as a DNS server

Failed to save enabled features : Virtualmin is configured to setup DNS zones, but this system is not setup to use itself as a DNS server. Either add 127.0.0.1 to the list of DNS servers, or turn off the BIND feature on the module config page.

This is a generic error telling the website administrator that the local DNS entries are being checked using external methods. Most of the time, this wont be a real issues but it causes a performance spike which depends highly on where the DNS entries are being searched.

Securing your server from attackers 2

What is a CSF / LFD

ConfigServer Security & Firewall (CSF) is a stateful packet inspection firewall (SPI), login/intrusion detection, and security application for most Linux distributions and Linux based VPS.

CSF is versatile enough to host more features other than the standard filtering of packets. CSF can give you login detection, brute force detection, system intrusion and flood detection. CSF have a UI integration for cPanel, DirectAdmin and Webmin.

CSF can also detect port scans, SYN flood and can temporarily or permanently block clients who are flagged as an attacker.