Category: Ubuntu

How to protect ubuntu server from brute force attack using “fail2ban”How to protect ubuntu server from brute force attack using “fail2ban”

Fail2ban is an open-source tool to prevent servers from brute force attacks. This tool will scan server log files and if found any suspicious attempts then it will block the particular IP for a specific time. Fail2ban also works to prevent dos or DDoS attacks, malicious traffic attacks on websites

How to secure your server with private key login authentication. (As like AWS EC2)How to secure your server with private key login authentication. (As like AWS EC2)

If you already using EC2 instances on AWS then you aware of how to access the EC2 machine. Whenever you create a new instance on AWS you need to create a new key (or use an existing old key) to login to your server through SSH. This private key has

How to add windows client to Nagios monitoring.How to add windows client to Nagios monitoring.

In the previous article, we discussed how to configure linux client host into the Nagios server. This article shows you how to configure windows client with Nagios server. Before configuring the Windows client, will have to look into nagios configuration file once. Because the windows configuration file windows.cfg is by

How to add a new client to the Nagios server.How to add a new client to the Nagios server.

In the previous articles, we discussed how to install Nagios, how to install Nagios plugins, how to upgrade Nagios core and how to install Nagios client. Now in this article will discuss how to configure new clients in the Nagios server. There are different configuration files Linux and Windows clients

SSH Password-less authentication in easy steps.SSH Password-less authentication in easy steps.

SSH Password-less authentication is very useful when you are automating tasks between your all remote servers. If you want to run any script or use SCP multiple times then this option will be very useful for you. Once this is implemented that you will never ask a password to login