Category Archives: Security

CentOS 7 Server Hardening Guide

Posted on 17/09/2017 by Lisenet

This guide is based on a minimal CentOS 7 install following the idea that you only install software that you require. Continue reading →

Configure Host-based and User-based Security for the Service on RHEL 7

Posted on 01/08/2016 by Lisenet

Security for SSH, HTTP/S, DNS, NFS, SMB and SMTP. Continue reading →

Compile and Install Nasty on Debian

Posted on 21/10/2015 by Lisenet

Nasty is a tool which can help us to recover a GPG passphrase. Continue reading →

Configure Security Limits on a Debian Server

Posted on 15/06/2015 by Lisenet

Security limits to prevent fork bombs and more. Continue reading →

Prevent Logjam in Apache 2.2 on CentOS 6

Posted on 21/05/2015 by Lisenet

Disable support for export cipher suites. Continue reading →

Compile and Install Ettercap on Debian

Posted on 16/03/2015 by Lisenet

Notes to install Ettercap 0.7.4.1, 0.7.6 and 0.8.2 on Debian Wheezy. Continue reading →

Disable SSLv3 (POODLE Vulnerability) on Nginx, Apache and IIS

Posted on 15/10/2014 by Lisenet

RE: CVE-2014-3566. Continue reading →

Web Application and Server Security Testing on Ubuntu 14.04 with Lynis, Nmap, Nikto, Wapiti, w3af, Arachni and Skipfish

Posted on 19/09/2014 by Lisenet

Installation notes with simple scans.  Continue reading →

Configure Iptables Firewall on a Debian PC

Posted on 19/07/2014 by Lisenet

Set up iptables firewall rules for inbound and outbound IPv4 traffic on a Debian PC (no routing). Continue reading →

Compile and Install Ncrack 0.4 Alpha on Debian

Posted on 10/05/2014 by Lisenet

Testing a private network host for poor passwords with Ncrack.  Continue reading →