First Aide for Intrusion Detection

I was considering installing tripwire on a CentOS 5.1 install but I happened upon an article about 'aide' which also notifies the system admin about changes to core files (and thus possible intrusions) Of course any genuine newly installed... » More

Spamassassin and sa-update

Sa-update replaces Rules-Du-Jour providing fresh spam rules to spamassassin in a similar way that freshclam provides viri updates to ClamAV.Presumably Spamassassin is installed but if it isn't: yum install spamassassin*This will install the main... » More

PHP 5.2.5 Plesk Horde Include Error

A recent upgrade to PHP 5.2.5 caused a problem with Plesk/Horde webmail. Specifically:Warning: require_once(Horde/String.php) : failed to open stream: No such file or directory in /usr/share/psa-horde/lib/Horde/Browser.php on line 4 Fatal error:... » More

Password-less SSH in 5 minutes

Connecting to remote servers using SSH is very common in systemadministration and involves entering the command : sshuser@remotehostname and the corresponding password.It is possible to use public keys with SSH to allow the remote host to accept SSH... » More

Aptana for Linux Web Development

Aptana is an Eclipse plug-in/perspective aimed at web development including support for Ajax and PHP. With Eclipsed installed, Aptana can be added by:Open EclipseChoose Help > Software Updates > Find and Install... In the dialog enter... » More

ProFTPd Port Restriction

Data ports are allocated to FTP clients on connection so it is difficult to know which port an FTP user might be using when they next connect. To narrow it down a little (for a low usage FTP service) I restricted the port range in... » More

Nagios NRPE Plugin on CentOS

Nagios is is a useful tool for monitoring many servers and their services. At a glance (or via email) you can see which services/hosts are experiencing problems.Monitoring public services such as HTTP, FTP, LDAP, SSH are relatively easy but to go a... » More

Fonts in WebFX tab pane

The WebFX Tab Pane is a great javascript method of adding tabs to webpages. However I found that twhen using the Luna style the f;onts on Linux/Firefox defaulted to a Times type that was also a little too big.   To fix this amend the tab.css file in... » More

MySQL Collation and Character Set Notes

When I was importing SQL data files into MySQL 5 (exported from MySQL 3.23) I ran into problems with collation types receiving the following error:ERROR 1071 (42000) at line 4659: Specified key was too long; max key length is 1000 bytes ... » More