Linux
Two tips: Using GTG and using NX
I’m a little behind on putting up my recent articles for TechRepublic here, so I’m going to put them all in one post. The first one is Use Getting Things GNOME to get things done which looks at Getting Things GNOME (GTG), a GTD application for GNOME. It’s pretty basic compared to other GTD apps [...]
Use APF to manage your firewall
Last week’s techmail was Use APF to manage your firewall which takes a look at using the APF (Advanced Policy Firewall) set of scripts to configure an iptables-based firewall on Linux. I was always a big Shorewall user; used it on my servers whether they ran Mandriva or Annvix. Recently I’ve been fiddling with /etc/sysconfig/iptables [...]
Nagios monitoring with NRPE allows better tracking of remote systems
The Linux tip from a few weeks ago was Nagios monitoring with NRPE allows better tracking of remote systems which talks about using the NRPE daemon on client systems to allow Nagios to get more information from the remote host that would normally be only available to a local user. Nagios is one of my [...]
AIDE+gpg 1.0.2 released
As part of my work migrating to Red Hat Enterprise Linux 6, I found that AIDE+gpg does not work with GnuPG2 (previously, Red Hat Enterprise Linux 5 and Annvix only used GnuPG version 1). The AIDE+gpg scripts now work with GnuPG version 2, and a new version is available from the AIDE+gpg project page. I [...]
Use Fail2ban to blacklist IP addresses and alert you to attacks
This week’s techmail was Use Fail2ban to blacklist IP addresses and alert you to attacks which takes a look at the fail2ban tool. Fail2ban is a program that will watch log files and if it notices failed login attempts on any configured services (ssh, smtp, etc.) it will ban that IP address for a certain [...]
Obtaining network information with netstat
Last week’s techmail was Obtaining network information with netstat where we take a look at some of the nifty little things you can do with the netstat program including listing which ports are being actively listened to and by which programs and what active connections there are (both inbound and outbound). netstat is a really [...]