DNSSEC (Domain Name System Security Extensions) is an extension to DNS to close security holes left in the original implementation of DNS. It’s main purpose is to provide authenticated DNS records from the authoritative name servers of a domain and therfore prevent mand in the middle and cache poisoning attacks. Continue reading →
The following instructions walk through getting Postfix to perform checking of SPF records on incoming mail. If a domain is properly configured it will have an SPF record and by configuring checking of SPF records Postfix won’t accept mail for the domain except from authorised servers.
I assume you already have postfix up and running how you need it
Recently we cut over a over a customer from their existing VSP to Ipera due to a range of issues. While most phones where at their central office their accountant had a Snom phone in their Brisbane office and it wasn’t registering. Continue reading →
When setting up Nagios we wanted to use SNMP checking of Linux devices. While there are included checks to do this the decision of using SNMP was to reduce the overhead of using SSH. These are the steps to get Nagios to do SNMP monitoring as well as a Linux host to give information over SNMP. Continue reading →
I needed to setup FTP on a customers SBS 2011 server using IIS Manager Users (yuk). I followed Microsoft’s instructions however would always get login errors on the users. I eventually cracked it using the following instructions:
The following instructions detail how to have Google display your authorship image for blog posts in Drupal 7. This is the image that shows up next to a search result such as this:
Google has created a method to do this by using your Google+ profile and a couple of links. Google uses your Google+ profile image to display, you link your Google profile to a central author page on your website and you link your blog posts to your author page. This allows Google to verify that it is you writing the posts.
By default Exchange 2010 has a policy requiring mobile devices (iPhones/iPads and Android Devices) to have a pin code before the account can be setup. The following steps outline removing this policy: Continue reading →