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Firewalling ntpd with iptables

Last updated: 10/05/2015

By default ntpd listens on all network interfaces, it requires to listen on an external interface in order to contact upstream NTP servers, if this is disabled then time syncing will be affected....

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Using the command line to create a production android release for a cordova application

Last updated: 08/04/2015

Creating a signed production android release or APK for your application is normally be done by using Google's Android Studio or with Eclipse and ADT. It seems a inefficient to fire up a...

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Backup and restore certificates in a java keystore

Last updated: 29/03/2015

A java keystore is a single binary file, as a precaution individual certificates contained inside can be backed up as plain text RSA certificates and keys then restored by into a new keystore at a later date. The...

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Correcting Bind errors due to an out of sync clock

Last updated: 03/03/2015

If your system's name server has ceased to perform recursive lookups, first check your logs. These are normally located at /var/log/syslog , there maybe be errors similar to the following:...

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