One of the most crucial tasks that a systems administrator needs to undertake is ensuring that systems are patched with the latest security updates. Ubuntu is considered as one of the most secure Linux distributions but it can be susceptible [...]
Security
Heimdall - A Tool to Manage Vulnerable Packages on Linux & Unix Systems
Heimdall is a tool to manage all the vulnerabilities that are found in the Linux distributions installed in your servers or desktops. The centralized heimdall server collects all the vulnerabilities data from client machines through heimdall agent. This agent that [...]
2:00 am
How to Configure L2TP over IPsec using Freeradius on Ubuntu
Layer 2 tunneling protocol (L2TP) with IPsec is used to ensure end-to-end encryption because L2TP does not support security features. OpenSwan tool is used to establish IPsec tunnel which will be compiled on Ubuntu distribution. The authentication security feature is [...]
3:00 am
How to Setup Vuls Vulnerability Scanner in Linux
VULS is a security vulnerability scanner for Linux. It downloads the NVD (National Vulnerability Database) and inserts into a sqlite database. Vuls has built in CVE dictionary for this sqlite file. The servers are connected using key based authorization, hence we need [...]
3:50 am
An Ultimate Guide to Secure Ubuntu Host
Ubuntu is termed as the highly secured operating system available but it has flaws in its default install like every other operating system. To remove these weaknesses, IT Security specialist has issued guidelines to combat your system's back-doors/weaknesses and protect you [...]
3:00 am
How to Install OpenVAS Vulnerability Scanner on Centos 7.0
The Open Vulnerability Assessment System (OpenVAS) is one of the most important and useful Open Source solution for vulnerability scanning and vulnerability management. Vulnerability scanning is one of the crucial phases in penetration testing that helps to discover vulnerable items [...]
3:00 am
15 Linux Hardening Steps to Keep Your Server Protected
Server hardening is the process of enhancing server security through various methods. We have a lot of steps to secure a server. Keep yourself and your company out by protecting your Linux systems from hackers, crackers, and attackers! You can [...]
3:00 am
Install/Configure CHKROOTKIT On Linux: Security Scanner
The chkrootkit is a common security scanner which helps the administrators to search the local system for signs that it is infected with a 'rootkit'. A rootkit can be considered as a malicious program which can take control over a [...]
3:56 pm
What is SYN Flood Attack? Detection & Prevention in Linux
SYN flood attack is a form of denial-of-service attack in which an attacker sends a large number of SYN requests to a target system’s services that use TCP protocol. This consumes the server resources to make the system unresponsive to [...]
8:24 am
How to Encrypt/Decrypt File using GPG in Linux
There is no absolute security on the internet or through a network. Because our equipment is regularly connected to the internet and there is some communication, we need to protect the critical information we exchange. Encryption will be a welcome [...]
8:41 pm
Example : How To Encrypt / Decrypt A File In Linux
If you are really concerned about the privacy and confidentiality of your files, encrypting files can help you. File encryption in Linux can be done in many ways, such as, using keys and software. GPG( Gnu Privacy Guard) by GNU is an [...]
3:02 pm