How to perform port scan using Nmap on Ubuntu 20.04 Port scanning can identify open network ports, as well as available services on that particular network, providing security experts with insight into potential vulnerabilities on that network. […]
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How to Install Nmap on Ubuntu 20.04 This is an open-source and free network scanner developed by Gordon Lyon. Network discovery is carried out using Nmap, which sends packets and then analyzes the results. The Nmap […]
How to Create a Sudo User on Debian Sudo is a program that runs on Unix-like computer operating systems that enables users to execute programs under the privileges provided by another user, usually the superuser. Sudo refers […]
Secure SSH with Two-Factor Authentication on CentOS 7 Multi-factor authentication (MFA) is a technique that enables users to access a website or application by proving their identity with multiple factors of authentication: information, ownership, and identity. […]
Install Apache CouchDB on CentOS 7 Open source CouchDB is a NoSQL document database, built in Erlang. Several formats and protocols are used by CouchDB for storing, transferring, and processing data. JSON is used for data storage, JavaScript for querying […]
TCPdump: How to set it up and use it CLI-based tool for capturing packets, Tcpdump. This tool analyzes packets, decodes data payloads if the encryption keys can be deciphered, as well as recognizes file transfer payloads (SMTP, […]
How do I enter emergency mode? In CentOS/RHEL In case of a malfunctioning system, systemd emergency targets can be used. In the emergency target, it does not try to mount the root filesystem. In case the root […]
How to set Static IP on Ubuntu 20.04 | 18.04 To set a static IP address, we will use a command-line utility. The utility is called Netplan and was developed by Canonical. Basically, Netplan configures network interfaces […]
How to Install Metasploit Framework on Ubuntu 18.04 In addition to many other tools and utilities, Metasploit is an open-source project which is very effective at identifying hidden vulnerabilities. With Metasploit, you can exploit the same […]
How to Install CSF On Ubuntu The CSF(ConfigServer Firewall) firewall program is a powerful tool that enhances the security of your Linux system. Additionally, it has a Login Failure Daemon (LFD) that monitors your server for […]
Install DenyHosts on Ubuntu 18.04 | 20.04 A Python-based tool for preventing attacks on SSH servers, DenyHosts provides log-based intrusion prevention. The purpose of this security solution is to prevent brute-force attacks on SSH servers by monitoring […]
How to install SSHGuard on an Ubuntu 20.04 LTS As a monitoring tool, SSHGuard is very beneficial for preventing brute force attacks. In addition to reading log messages, SSHGuard determines malicious activity based on the log […]