The Helpdesk For I.T. Administrators
The netstat command on Linux shows you any active and listening network connections on the computer. If there is a connection active that you are not sure what it is, you can use the ‘-p’ (or ‘–programs’) parameter to show the process id (PID) and process name of the network connection/socket. Example: Note: to use …
Restarting HAProxy using the default init scripts will kill any existing connections, and prevent any new connections while it restarts. With the init script restart method (eg ‘/etc/init.d/haproxy restart’), if there are any configuration errors, the service wont start up again. This might be fine for low volume sites, but if you are dealing with …
If you need to access your network (be it a home network, or a work network) from a remote location, a great option is to set up some sort of VPN connection. There are a few different types of VPN connections, such as PPTP, L2TP, and IPSec, and each has advantages and disadvantages. One of …
This ‘How To’ article outlines the steps required to compile and install the Firebird database server on a Linux machine. Download the latest version of the source code from http://www.firebirdsql.org/en/server-packages/ At the time of writing this article, the latest version was 2.5.1.26351-0. Replace the URL below with the latest version, or get the source code …
HAProxy is a free, reliable, high performance load balancing solution capable of proxying TCP and HTTP applications. This article will outline how to set up a simple HAProxy server to allow you to load balance web site requests to one or more back-end web servers. While this example may not be suitable for a production …
Below is a list of my top 5 network monitoring tools for Linux, in no particular order. Nagios Nagios is a network monitoring application that is capable of alerting a system administrator in the event that something goes wrong on a network, and even when it comes good again. Nagios lets you monitor network services …
The “ApacheTop” package has been written to allow users to monitor real time statistics based on the Apache log files. ApacheTop is a great way to keep an eye on your Apache web server statistics. It allows you to monitor how many requests you get (total and per second), bandwidth usage (total and per second), …
Updating the software running on a operating system is an important part of maintaining a computer. Not only does it allow you to keep up to date with the latest features in the applications you use, it is also crucial to keep your system as secure as possible. The YUM (Yellowdog Updater Modified) package management …
Updating the software running on a operating system is an important part of maintaining a computer. Not only does it allow you to keep up to date with the latest features in the applications you use, it is also crucial to keep your system as secure as possible. The APT (Advanced Package Tool) package management …
PuTTY is a popular SSH client for a variety of operating systems. You can set up the window title in the configuration options, but sometimes you may want to display your own information in the window title text. PuTTY lets you do this via escape commands. More specifically by using the ^[ (escape) and ^G …