How to enable Firewall/Iptables? Core
Iptables is a user-space utility application for configuring the IP packet filter rules of the enable firewall in the linux kernel firewall, which are implemented as separate Netfilter modules. The filters are structured in separate tables, each of which has a set of rules for how network traffic packets should be handled. Currently, separate kernel... Continue Reading 
How to disable non essential services that are prone to exploitation? Core
Disabling unneeded services is a wise practice. As a result, fewer ports are available for exploitation in case of unwanted services running on the server of the nonessential service. Install the systemd package: sudo apt-get install systemd See which non essential services are running: systemctl list-units Recognize which services may expose your system to potential... Continue Reading
How can root login and password authentication for SSH be disabled? Core
The root user is enabled by default on most Linux servers, and hackers frequently attempt to get access to it by guessing its password. As a result, it’s a good idea to turn off the root account. First, make sure you have an admin user account so you can use the sudo special privileges access... Continue Reading
How to use putty to connect an Amazon EC2 instance? AWS
PuTTY is a terminal emulator, serial console, and network file transfer tool that is free and open-source. SCP, SSH, Telnet, rlogin, and raw socket connections are among the network protocols it supports. It also has the ability to connect to a serial port. Verify that the instance is up and running. To begin, ensure that... Continue Reading
How do you enable Passive FTP Mode in Plesk server which is running EC2 Instance on AWS? AWS
Plesk servers that only have active FTP connections do not allow you to access the server through FTP. Customers frequently ask us to activate Passive FTP on their Amazon EC2 instance. Whenever a new Plesk instance is deployed from an AWS Marketplace AMI, Amazon EC2 builds and assigns a security group to the instance. Plesk... Continue Reading
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