November 2007
Beginner
642 pages
15h 43m
English
Content preview from Linux Networking CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
19.11. Using ntop for Colorful and Quick Network Monitoring
Problem
You like tcpdump and Wireshark just fine, but they're not easy to read, and don't give you nice visual snapshots of network activity. Isn't there some program that will monitor and collect network traffic data, and aggregate statistics, and make nice colorful charts so you can see at a glance what your network is doing? Such as established connections, protocols used, and traffic statistics? And that is quick and easy to set up?
Solution
You want ntop, which is a hybrid packet analyzer that monitors network protocols, and creates nice HTML charts and graphs. Debian users should install it this way:
# aptitude install ntop rrdtool graphvizFedora users will have to dig up an RPM (try http://rpm.pbone.net/),or build it from sources. You must have libpcap and GDBM installed, and some sort of HTTP server. (Lighttpd is an excellent lightweight HTTP server.) You should also install:
RRDTool
Graphviz
OpenSSL
ZLib
GDChart
GDLib
LibPNG
Ettercap
After installing ntop, start it with this command:
# /etc/init.d/ntop startIt will ask you for a password for the admin user. Then, open a web browser to http://localhost:3000. Give it a few minutes to collect some data, and you can help it along by checking email and web surfing. The pages will automatically refresh.
Everything is configurable via the web interface. You should visit Admin → Configure → Startup Options first to configure what you want monitored, such as the local machine only, ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.