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CLI tools for Network analysis 1

Sep 242010

In two previous articles we saw two instruments that have as output of our analysis a graphic form (ntop and wireshark), but today we will see some tools you can use from the command line: Ping, telnet, dig, traceroute, whois, netstat, nmap, and mtr

PING

Ping is a computer network administration utility used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer. The name comes from active sonar terminology.

Ntop for Network analysis

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Sep 232010

In the previous article we saw wireshark, which allows, once activated, to capture packets in a given interface, in this article we’ll see ntop software that allows you to have similar information but also something more.

ntop is a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntop is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform and on Win32 as well.

ntop users can use a web browser (e.g. Firefox) to navigate through ntop (that acts as a web server) traffic information and get a dump of the network status. In the latter case, ntop can be seen as a simple RMON-like agent with an embedded web interface. Continue reading »

Wireshark for Network analysis

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Sep 222010

On the Internet there are hundreds of excellent open source tools and utilities that can be used for network analysis, but not many technicians use them. Indeed, several open source solutions are truly effective and can help the specialist networks in daily work.

In this first article i’ll show you Wireshark an useful tool for network analysis.

WebDAV on linux

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Sep 192010

WebDAV is always been one of my favorite protocol, because it permit to easily share file system and give user the permission of upload files, on the other side using it from Linux it’s always been a thorn while on Windows it works completely integrated with the OS.

What’s WebDAV ?

Web-based Distributed Authoring and Versioning (WebDAV) is a set of methods based on the Hypertext Transfer Protocol (HTTP) that facilitates collaboration between users in editing and managing documents and files stored on World Wide Web servers. WebDAV was defined in RFC 4918 by a working group of the Internet Engineering Task Force (IETF).

Granola, Power saving software

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Sep 182010

Introducing Granola a software to help save some energy from your PC, and in the while help the nature.

This is a small followup from my article Linux for a green Desktop

Granola site say:

“Granola will green up your Linux or Microsoft Windows computers by cutting energy consumption by up to 35%. This will not only save you money, but help to save the planet by reducing CO2 emisions. Granola will not turn off your computer or give you any noticable performance loss, and it is totally free! Do your part to save the planet by installing Granola.”

I’m now testing it on my Ubuntu 10.04
Continue reading »

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