Category Archives: technology

Server and Network Monitoring using MRTG – Part 1

This is the 1st series of articles highlighting the usage of MRTG for server and network monitoring.

In my previous article, I touched upon the basics of installing MRTG, Net-SNMP and used the cfgmaker tool to generate simple MRTG graphs. In this article, we further move on to the topic of creating MRTG graphs for a single Linux/Unix machine using only shell scripts.

The final goal or mission of these series of articles is to provide users concrete and professional examples of monitoring their servers and network devices using MRTG. In the end of these series of articles, we will round up and unite all these MRTG graphs to our web based network monitoring system called Nagios.

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Effective User management under Linux/Unix

In this article, we look into the topic of managing our users on our local Linux/Unix box. As we know it, Linux/Unix is a multiuser environment, therefore, one of the main tasks of a system administrator is to create user accounts and provide a secure environment for users to do their work in.

Adding and removing users is still one of the most important task of a system administrator. Therefore, we as system administrators need a good understanding of how the Linux/Unix accounting system works in order to provide good network services to our users and clients.

Good account management is also the key determinant to system security. Infrequently used accounts are prime targets for crackers. So are accounts with weak passwords.

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Network Management using Nagios

If you are reading this article, then you should be well aware that there are various and different types of network devices, servers, electronic gadgets, transport mediums, media converters, etc, which are somehow connected to each other to form the Internet.

The internet is the biggest network in the world consisting of billions of computers, servers, workstations, routers, switches, printers, mainframes, mobile devices, etc, connected to each other in one way or another.

1 question certainly arises, which is, how do we keep track of this giant network and it’s billions of network devices connected to the Internet?

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WWW, Open Source and Nepal

I am diverting from my regular technical articles regarding operating systems and softwares to a different topic. This article represents the general aspect of the internet services provided in Nepal and also gives general information of my country.

The Internet is making the world smaller, that’s the latest buzz we hear everyday. A day never goes and passes by without the mention of the word “GOOGLE”. Everybody around the world seems to be bracing social networking such as Facebook, Orkut, Bebo or Myspace.

However, to a 3rd world country like Nepal, does it really matter?

Let me brief the audience about Nepal in a few sentences.

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