NFS – Network File System

NFS is the Network File System and is another application which provides almost transparent access to files for client applications. At the core of NFS lies Sun:RPC remote procedure Call which should be understood to consider NFS properly. Sun Remote Procedure Call For network programmers much of their work is done by creating application programs […]

IP Multicasting

Many applications use IP multicasting primarily for two distinct functions. The first one is to provide a delivery mechanism for multiple destinations. Many applications provide information to multiple recipients simultaneously, commonly used for things like delivering mail, news or updates. Other applications like conferencing and distributing video feeds to an audience. Without multicasting, these applications […]

Using ICMP Messages

Sometimes the Internet Control Message Protocol might not look very helpful when you’re trying to troubleshoot issues. However ICMP contains a lot of different message types and lots of them are in fact extremely useful for both troubleshooting and general network management tasks. Obviously the most used and famous command in ping which is focussed […]

Switching Around the World with a VPN

When you’ve got used to using a VPN service, you’ll slowly start to discover the various advantages of being able to switch countries when you like. For example although in the UK most of the Premiership Football matches are only available on subscription TV if you change your location to USA or Canada you can […]