SECURITY

This category includes articles dealing with softwares and tools helps operationg system / network security.

Heimdall - A Tool to Manage Vulnerable Packages on Linux & Unix Systems

heimdall vulnerability management

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 [...]

Cipher - Command Line Tool to Encrypt/Decrypt Files and Directories

cipher encrypt file linux

ss you take some security measures to protect your environment and encrypt your data. Linux offers some encryption methods and there are some tools which can help you to encrypt your data. Encryption is important when you need to communicate sensitive information [...]

How to Setup osquery to Monitor Security Threat on Ubuntu

osquery monitor security tool

OSQUERY is an open source tool developed by Facebook for querying various information related to the state of your machines like running processes, loaded Kernel modules, active logged in users, active listening ports etc. This system instrumentation framework make low-level [...]

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 [...]

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 [...]

Securely Download Files using Https from Nginx Docker Containers

As  system administrators, we have situations where we need to download large files such as backup files, database backups, emails, log files etc securely between our servers. Usually we use SFTP, SSH or SCP for this purposes. But these processes slow down [...]