(SUBNETwork) A logical division of a local area network, which is created to improve performance and provide security. To enhance performance, subnets limit the number of nodes that compete for available bandwidth. Instead of one network handling all the traffic, the network is divided into groups of clients and servers that interact with each other most of the time. For security, the subnet divisions can be based on servers that have restricted applications. Routers are bridges are used to traverse network segments. In an IP network, the subnet is identified by a subnet mask (see subnet mask).
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Q'n'A: Your correspondence to date
- Over the last week or two, I've been inundated with an email. On a serious note, there have been a few questions asked; not that they need clarification as I've already covered these things, I'll answer these anyway. Q. [Email] Open Source ERP5 is now used to...
- Blog posts 2008-07-21
- Open Discussion: Software firewalls
- Open Discussion: Software firewallsRE: Open Discussion: Software firewallsI use both Windows Firewall in Vista and the built in hardware firewall in my router. I just don't see the need for a resource hungry, third party solution any more when the built in firewall in Windows does an admirable job.Fire ...
- Discussion threads 2008-07-11
- 40ò0of parents feel that writing on a computer makes their child more likely to use poor spelling and grammar
- 40ò0of parents feel that writing on a computer makes their child more likely to use poor spelling and grammarAgreed.Any time you let a machine do for you something you should be doing, whether it grammar, spelling, or in my case as a CPA letting a machine add a column of...
- Discussion threads 2008-06-29
- GetNetworkInfo (exe)
- GetNetworkInfo software monitors changes in your external IP and displays major network parameters of your cumputer such as: computer name, workgroup or domain, internal IP and subnet, external IP. If the external IP of your computer has been changed by your internet provider a sound is played and notification message...
- Software downloads 2008-06-23
- Ubuntu: I'm extremely impatient
- Ubuntu: I'm extremely impatientFor the certificate problems, try this:http://www.mozilla.com/en-US/firefox/Download Firefox 2, and for the repo problems just pick a mirror to use, if only for next day or two.Lots of other people want it at the same timeand you're throwing a wobbly. Perhaps you should go to as many distro's...
- Discussion threads 2008-04-25
- Outlook Messenger for MAC (dmg)
- Cross Platform (Windows, MAC, Linux) based Instant LAN Messenger Software designed for use within Small, Medium and Corporate Office, and it is Compatible in LAN, Subnet, VPN, Terminal Services, WAN & Wi-Fi Networks. Outlook Messenger adopts peer-to-peer server-less technology, which requires No Server & No Internet connection. Key Features includes...
- Software downloads 2008-04-15
- IP-Admin - Centralized IP Address Manager (exe)
- With its easy to navigate Web-based functionality, all users and administrators of the application can easily access the ip database using only a Web browser. No need to install additional client software just to manage your enterprise IP network. You now have the ability to easily create and assign subnets...
- Software downloads 2008-04-09
- Serial Grabber (exe)
- Serial Grabber for Cisco IPT Phones solves all of your Cisco phone auditing requirements. Simply enter your subnet range and IP Phone Scanner will bring back the Serial Number, MAC address, Directory Number and Model Name / Type. This version is the first release on CNET Download.com.
- Software downloads 2008-02-18
- Wakeup (zip)
- With this free utility you can wake up remotely a computer only knowing the network cards Mac address. It will only work if you are in the same subnet and if the remote computer has the feature enabled. Version 1.01 includes unspecified updates.
- Software downloads 2008-02-05
- Sampling Strategies for Epidemic-Style Information Dissemination
- This paper considers epidemic-style information dissemination strategies that leverage the non-uniformity of host distribution over subnets (e.g., IP subnets) to optimize the information spread. Such epidemic-style strategies are based on random sampling of target hosts according to a sampling rule. The objective of this paper is to optimize the information...
- White papers 2008-02-01
- Is your broadband bill about to go up?
- Is your broadband bill about to go up?Dangerous road for consumers and providersIf TW is allowed to implement this billing change it will turn out to be a cash cow in the same manner that high oil prices have filled the coffers of oil companies everywhere. The bandwidth of...
- Discussion threads 2008-01-17
- FCC starts Comcast cover-up on net neutrality
- FCC starts Comcast cover-up on net neutralityHow about waiting for the decision ....... before condeming it? Shouldn't you be posting for the Huffington Post or Moveon.Org instead of a tech site? That is where I expect to find the Liberal spin. Not here!Explain to me......How it's "neutral"...
- Discussion threads 2008-01-16
- Newt Professional (exe)
- A network inventory & discovery tool providing fast and easy scanning of over 200 items from NT-based (NT4/W2K/XP/W2K3/Vista) machines with no user-deployment time. Gathered information is displayed in an easy-to-read spreadsheet-like format. Features include discovery & scanning by domain, workgroup, IP range, or by using the built-in network browser featuring...
- Software downloads 2008-01-04
- TCP/IP Networking
- View Available Dates and Locations TCP/IP is the globally accepted group of protocols at the core of the Internet and organizational intranets. A solid understanding of each of these protocols and how they work will give you the ability to deploy the most effective network for...
- Training 2008-01-01
- NetPalpus (exe)
- NetPalpus is a powerful and easy-to-use network management tool, which can discover, organize and monitor all devices on your network. It can monitor the device status, as well as availability of specific services and alert you via sound or email when a device becomes unavailable. The network devices are automatically...
- Software downloads 2007-12-28
- Macs join the Army - Hooah!
- Macs join the Army - Hooah!This is going to help with security how?Yeah, yeah...monoculture and all that jazz. I work for a fortune 500 company (> $100B in market cap). Over 75K employees. When virus outbreaks occured only a small number of systems were actually infected. Only a handful of...
- Discussion threads 2007-12-21
- IP Subnet Calculator for IPv4 and IPv6 (dmg)
- Input an IP address and choose one of the following: number of subnet bits, the maximum number of desired subnets, the number of host bits, or the maximum number of desired hosts. The calculator gives you a bit-by-bit address visualization and generates a complete table of subnets. CIDR allows multiple...
- Software downloads 2007-12-19
- IP Sniffer (zip)
- IP Sniffer is a suite of IP Tools built around a packet sniffer. The packet sniffer can work on all Windows versions using either: the new raw socket implementation of Windows2000 driverless, WinPcap needs to be installed, a NDIS protocol (needs to be installed , no reboot). IP sniffer is...
- Software downloads 2007-12-11
- ARPmyNET (exe)
- ARPmyNET retrieves the MAC addresses of all networking equpiment on your subnet, and matches them against an OUI file. The result is a list of IP addresses with the corresponding MAC address and the IEEE register company for the MAC addresses. IP limitation ARPmyNET only works with IPv4 C-class IP...
- Software downloads 2007-12-10
- Cisco Wide Area Application Services (WAAS) Egress Methods
- Web Cache Communication Protocol Version 2 (WCCPv2) gives IT organizations mechanism to transparently intercept and redirect network traffic to a nearby network device, such as a Cisco Wide Area Application Engine WAE Appliances running Cisco Wide Area Application Services WAAS Software, for purposes of application acceleration and WAN optimization. By...
- White papers 2007-12-01
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