Monthly Archives: July 2013

Network sniffer with tcpdump – example commands

Network sniffer

Network sniffer with tcpdump – example commands The other day while I was inspecting my network traffic usage, I noticed a slitght increase in the incoming traffic. At first I really thought someone was just uploading something on the server using php or FTP, haven’t really put much thought since the increase it was just

How to block and unblock IP addresses using iptables

Firewall support

How to block and unblock IP addresses using iptables Right, so straight out, how do you block and unblock IP addresses on a server? Beginner stumble on this a lot of times, they believe that using a GUI for managing their server is much better and safer (in a way I do agree, most control panels

How to fix eth0 network interface on centos, redhat clone VM

Web hosting servers

How to fix eth0 network interface on centos, redhat clone VM I recentely finished my master degree and I’ve used some virtualization of centos and had to clone two of the virtual machines (VM). The issue I encountered was that the eth0 network interface was not present, I found it quite strange at first, then

Website speed test and website performance review

First byte time

Website speed test and website performance review Everyone knows about the famous speedtest.net tester, if not, do check it out! So what of it? Well similar to how you test your internet connection speed, you can check your websites page speed and receive a report based on on each online tool features that are provided.

How to fix wp-super-cache 0 Cached Pages

How to fix wp-super-cache 0 cached pages issue Today I stumble upon an issue which I was seeing for some time now, I had no idea why on each browser request it will always need to wait for almost a second on a normal “cached” (at the time thought it was cached) static page. Later

Installing mod_security and mod_evasive on Debian

Web hosting servers

Installing mod_security and mod_evasive on Debian In this article I’m going to show you how to install mod_security for web scanning and mod_evasive for dos protection. First thing you need to have a Webserver like apache installed and also with mod_headers enabled:

After you are done installing the Webserver we can begin and install

MaxCDN API and CDN platform

A few months ago I started looking for a reliable CDN provider that would allow me to reduce some of my websites load time. While I tested multiple CDN providers, I was left with MaxCDN or Cloudflare, the later would have been the free version. Both of them are really good, I thought I could

Speed website by adding browser cache

Web hosting servers

There are some easy things that you can do to speed up a website by making use of the browser cache. Using the browser cache you can also reduce the load on your web server. Normally the modules that we would use are mod_expires and mod_headers which are normally installed by default and just need

How to view device information about your hardware on linux

How to view device information about your hardware on linux Some of us will want to view the hardware information in a system without really taking the system apart and checking each component at a time. On linux you normally have a lot of options, normally structured based on exactly the things you need. For

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