Tag: Network

Using free public DNS servers

The DNS is an essential part of the internet, it translates hostnames such as 0x9900.com into IP addresses 149.20.56.139. DNS also plays an important role for routing emails.


Using OpenBSD to build a secure access point

At home I have two networks, one for my family and me and one for my guests. Once you are on the family network you can access our backup server, our music and video server, our printers, etc. The guest network can only access to the internet.


Heartbeat Code For Cluster Environment

Working in a cluster environment, I often need to check if some of the nodes of my cluster are dead or live. To do so, I have a class called Heartbeat in my Python toolbox. This simple heartbeat class does a ping on the cluster node, and returns True, or …


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