Category Archives for Ubuntu

How to Recover SSh Access to Amazon EC2 Instance After UFW firewall Activation But Forgot to Allow SSH

ufw is very good tool. But if you forget to turn on ssh then you would not able to log in to your server. But you forget to enable the ssh in ec2 instance then you have a way to … Continue reading

04. October 2014 by Zakir Hyder
Categories: Linux, Ubuntu | Tags: , , , , , , | Comments

Setting Up Varnish Security Firewall

Varnish can add a extra layer of security as well as HTTP accelerator. https://github.com/comotion/VSF is a Web Application Firewall (WAF) written using the Varnish Control Language (VCL) and a sprinkling of Varnish Modules (vmods). If you want to know how … Continue reading

01. October 2014 by Zakir Hyder
Categories: Ubuntu, Varnish | Tags: , , , , , , | Comments

Building a Varnish VMOD

Building a Varnish VMOD in ubuntu is bit complicated process. we are going to use varnish-3.0.5. For VMOD we are going to use https://github.com/varnish/libvmod-shield. Lets create a folder and get the varnish’s source code. Then we will create a make … Continue reading

28. September 2014 by Zakir Hyder
Categories: Linux, Ubuntu, Varnish | Tags: , , , , , , | Comments

Time Synchronisation with NTP in Ubuntu Server

Recently during some bug fixing, I found out that our database server’s time is 5 minutes off. First I thought probably the timezone was correct. Then I found out that for Ubuntu server you have to synchronisation the time. Every … Continue reading

11. August 2014 by Zakir Hyder
Categories: Linux, Ubuntu | Tags: , , , , | Comments

ISPConfig 3 setup on Ubuntu

There are number of Hosting Control Panel Softwares. The cPanel is best but it cost 10$ per month. Plesk also need licensing cost. Webmin is free but it interface is not user friendly. THe ISPConfig – Hosting Control Panel Software … Continue reading

10. February 2012 by Zakir Hyder
Categories: Linux, Server Management, Ubuntu | Tags: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , | Comments