The Sysadmin’s Daily Grind: Cancerbero


Article from Issue 67/2006

When ports on a host start opening and closing like window shutters in a gale, it’s time for admins to pay attention.

Last month, I took a look at some features of the new Nmap 4.00. This topic is far too interesting for just one month, however, so this month, I’ll describe Cancerbero [1], a server monitoring tool based on Nmap. The tool, which was written in Perl, leverages the power of Nmap to port scan your network devices. Cancerbero logs the results in a database and uses a small-footprint PHP front-end to make the results more readable. The benefits are obvious: I get an at-a-glance overview of open ports, and I can easily see which ports are open or closed.

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Charly's Column

    Many tools keep growing with each new version, but Nmap 4.00 has lost weight thanks to the Diet-Nmap project. The latest incarnation of Nmap is not only quicker, it is also more frugal with memory.

  • Charly's Column

    On a trip to Berlin, Charly discovers that the nmap port scanner has a new cousin who enjoys spying on phones – smap scans networks for VoIP devices.

  • Charly’s Column: PortSentry

    To celebrate 10 years of his column, Charly sets up a sensitive detector that measures the cosmic background radiation of the Internet.

  • Charly's Column

    Some of Charly’s servers run the SSH daemon on port 443 rather than on the standard port 22. If an SSL-capable Apache web server starts causing trouble, his method of settling the dispute is sslh.

  • Bot_Attack

    While going about his normal duties, Linux Magazine author Charly Kühnast was hit with a mean attack. Charly’s separate anti-spam server, which sits in front of his mail server, saved him from the mail storm.

comments powered by Disqus

Direct Download

Read full article as PDF:

Charly_Column.pdf (113.34 kB)


njobs Europe
Njobs Netherlands Njobs Deutschland Njobs United Kingdom Njobs Italia Njobs France Njobs Espana Njobs Poland
Njobs Austria Njobs Denmark Njobs Belgium Njobs Czech Republic Njobs Mexico Njobs India Njobs Colombia