Skip to Content
Linux Firewalls
book

Linux Firewalls

by Michael Rash
September 2007
Intermediate to advanced
336 pages
9h 7m
English
No Starch Press
Content preview from Linux Firewalls

Viewing psad Status Output

Because psad stores various data within the /var/log/psad directory as it monitors iptables logs, you can rummage around in this directory to get a sense of how heavily scanned your system is.

Of course, most people don't relish manually sifting through tons of /var/log/psad/ip directories and associated files, so psad automates the process by providing the ability to query the local filesystem for status information on the running psad daemon. This involves executing psad from the command line with the --Status argument, as shown in Listing 7-1:

[iptablesfw]# psad --Status ❶ [+] psadwatchd (pid: 27812) %CPU: 0.0 %MEM: 0.0 Running since: Mon Jul 2 13:58:07 2007 [+] kmsgsd (pid: 27810) %CPU: 0.0 %MEM: 0.0 Running since: ...
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

AirBnbBlueOriginElectronic ArtsHomeDepotNasdaqRakutenTata Consultancy Services

QuotationMarkO’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.
Head of Cybersecurity
QuotationMarkI 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.
Field Engineer
QuotationMarkI’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.
Data Platform Tech Lead
QuotationMarkI'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.
Mark W.
Embedded Software Engineer

You might also like

Linux Firewalls, Third Edition

Linux Firewalls, Third Edition

Steve Suehring, Robert Ziegler
Linux Security Cookbook

Linux Security Cookbook

Daniel J. Barrett, Richard E. Silverman, Robert G. Byrnes

Publisher Resources

ISBN: 9781593271411Errata