Category: Tips and Tricks

openvpn Linux

USE OPENVPN ACCESS SERVER TO BUILD A VPN SERVER IN LINUX

OpenVPN Access Server is a full-featured secure network tunneling VPN software solution that integrates OpenVPN server capabilities, enterprise management capabilities, simplified OpenVPN Connect UI, and OpenVPN Client software packages that...

Security Technical Implementation Guide for Debian 9

Debian Stretch 9 is released and the large-scale deployment, HardenedLinux community also released STIG (Security Technical Implementation Guide) for Debian 9 version, STIG is the US Department of Defense for IT infrastructure security compliance , Which...

NotPetya ransomware

Preventing Petya Ransomware

June 28, according to foreign media news, Ukraine and other countries are experiencing Petya blackmail virus attacks, government, banks and other important systems affected by the attack. The hacker is using...

Block TOR Client with IPTABLES

Block TOR Client with IPTABLES

Managing network traffic is one of the toughest tasks that system administrators must deal with. We must specify that the users of the connected system meet the incoming and outgoing...

Prevent WannaCry

How to close 445/137/138/139 port on Windows

Due to large-scale worm struck, the most urgent thing is to close windows 445/137/138/139 port, where several options to share the windows closed 445/137/138/139 port for Window2003/XP/Windows 7/Windows 8/Windows 10 system....

Best tips for using Wireshark

Wireshark it is a powerful network capture package analysis tool, we are no stranger to him, may work every day, use it to troubleshoot, analyze the type of attack, etc.,...

Stacer: Linux System Optimizer and Monitoring

Stacer is an integrated system utility. Allows you to monitor system resource usage, clear application caches and remaining configuration files, uninstall applications that are no longer needed, stop and start...

Detect Mount CD-ROM

How to fix Detect and Mount CD-ROM

On your Kali Linux USB installation, you ofter see an error: “Installation step failed an installation step failed. You can try to run the failing item again from the menu,...