Services

First think, then react Don’t be too ready to use a button marked “report abuse” (or “this is spam”).It results in real work for a lot of people, and you must do your bit by checking that you are sure you mean what is implied by pressing the button. Don’t send it to the wrong place.In particular when an e-mail message has been delivered to a Janet address it is very rarely useful to complain to Janet CSIRT. The Computer Services or similar department in your own organisation should be able to explain what is going on.

Policy For The urn:mace:ac.uk Namespace Version 1.0, 5th January 2004 Introduction

What is Subnetting Subnetting is a way of partitioning a network at the IP level by dividing a block of addresses into a number of smaller sets. To understand what is happening, first look at some small numbers rather than a full IP address. Take the set of 'addresses' 100 to 129. If computers used decimal representation, this network of 30 addresses might naturally be split into: 100 - 109 110 - 119 120 - 129 The first two digits represent the subnet number (10,11,12), while the final digit gives the address within the subnet.