Opening NAT capabilities on your Linksys router so you can connect with a gaming system allows you to play many games over the internet. Though different gaming systems have different ports that need to be forwarded and different MTU size settings, the process for opening NAT for them is the same. If you want to connect two of the same type of gaming system, you may need to contact your Internet service provider and request a second public IP address assignation for your home.
If you have a large living space, you may find extending your local area network from one end of the house to another difficult. While containing your network to the main area of your home is a pain, expanding the network can lead to interference and spotty Internet coverage at the edges of your extended network.
With computer network ports ranging from 1 up to 65,535, malicious software can find thousands of ways to access a computer that's unprotected by a firewall. Trusted software, on the other hand, may encounter trouble connecting to their preferred ports. If you need to check whether a particular port is available or inactive, you don't have to settle for your firewall's report on ports to which it's listening or is actively blocking; instead, query individual ports to determine each of their statuses using Windows' Port Query tool.
Obtaining the best possible speed from your wired network may require you to do more than merely checking to see that your Ethernet connections are secure. Wired network connections are generally less susceptible to interference and signal attenuation than their wireless equivalents, but their performance can still be hampered by poor network design. In addition, some routers can be tweaked to prioritize certain types of traffic, potentially providing a speed boost to certain applications.
Compatibility issues between Gigabit and Fast Ethernet segments of a network can cause data loss and transmission errors. A Gigabit interface communicating at full speed transmits data at too great a rate for Fast Ethernet interfaces to handle, forcing the slower interface to discard packets in an attempt to keep up. However, Gigabit interfaces are usually able to reduce their transfer rates to allow communication with devices using the Fast Ethernet standard.
A packet sniffing recorder, also known as a network analyzer, is a computer program or piece of hardware designed to record and analyze traffic on a computer network. Network analyzers were designed to scan network traffic for the purpose of identifying problems on the network and measuring overall performance. The information supplied by the network analyzer can be used to optimize network performance and remove bottlenecks.
Wireless networks make setting up your office connectivity much easier – fewer cable drops to run through the ceiling panels or through the walls and people can use company-issued laptops or connect with their mobile devices to stay on top of company email. There are still technical factors to tend to and policies to set up, though.
Your Linksys router assigns IP addresses to your devices as you disconnect and reconnect your computer, smartphone or tablets to your home network. In the rare event that your device appears connected to the router but is unable to connect to the Internet, your device may need to renew the IP address assigned to it. Typically, this can be done by simply disconnecting your device and reconnecting it. If this does not work, however, you may need to go through other troubleshooting steps on your Linksys router.
Linking two computers with a crossover cable provides a direct IP connection between the PCs that can be used for gaming, file sharing or print sharing. Setting up a crossover connection requires that you use separate network adapters configured with their own IP addresses. Once the cards are configured, you can use a "ping" command to see if your computer can find the other computer's IP address through the cable connection.
Domain name system servers act as a kind of network directory service, translating URLs into IP addresses for computers and other devices to use. Without a connection to a working DNS server, your computer would be unable to use links to locate or download Web pages. As such, many operating systems and routers allow users to specify an alternate DNS server to use in case the primary one is unreachable.
Powerline network adapters enable you extend your home network using your home electrical lines to carry network communication signals. Maximum network speed using powerline networking is about 500Mb per second, which is more than enough for video streaming applications such as YouTube or Netflix. Connecting a powerline adapter to your home network is easy to do since the kit will come with one master device and at least one slave device.
Windows has been using homegroups since Windows 7, with variations on the concept present in earlier versions as well. The idea is that a locally connected network of computers should be able to quickly share files with one another, so that a small office could create and edit documents, or a household could play music stored on a media center from another laptop. For home users, homegroups are simple to set up, and anyone connected to your network can take advantage of the functionality. You can even use Windows to transfer files to users outside of your network, with some…
Like most, you may have more than one device connected to the internet: your laptop, smart phones and your kids’ computers and phones. Monitoring the network then becomes necessary if you wish to keep tabs on what your kids are surfing on the Internet, or to check if there are any unauthorized devices connected to your open network. Apart from these reasons, your devices may also be infected with malware and eating into your bandwidth.
If you have a D-Link router connected to your network, you can connect to the D-Link router in one of two ways. You can establish a direct connection between your computer and the router with an Ethernet cable. You can also use the wireless adapter on your computer or mobile device to scan for the SSID of a wireless D-Link router. The SSID is the name that is assigned to the router in the router’s administrative interface.
Congestion in a LAN, or local area network, can have several causes. If the LAN has been meeting performance requirements until now, start your investigation by determining what has changed in the network. Changes might involve a new application, an increase in the number of users or the addition of a wireless access point, any one of which could introduce congestion problems. Use a process of elimination approach as you progress through your investigation.
Whether you've recently had unauthorized access attempts or simply feel it's time for a security refresh, it pays to know how to reset the password on your AirPort Extreme router. To reset the password on your AirPort Extreme, you must switch the device into Soft Reset mode. This mode disables security on the device for five minutes, enabling you to make changes to the password while maintaining other important user and network settings.
The bus topology is a simple way of connecting computers together on a Local Area Network. One of the oldest networking topologies, a bus network has all of its devices communicating through a central cable, or backbone, which is why it is sometimes called "backbone bus topology" or simply "backbone network." Examine the pros and cons of a bus topology to better understand the ways in which modern networks are designed.
Many small businesses and home offices use a Dynamic Host Control Protocol server to help manage their network. A DHCP server assigns Internet Protocol addresses to computers as needed, moving unused network addresses to new machines. If your computer isn't detected in the DHCP list, there might be a problem with the server or on the client side, which means you'll need to check the connection at both ends to restore network connectivity.
Investing in a network switch might make a lot of sense when your computer network starts approaching double-digit numbers of connected devices or high-quality performance becomes a priority. D-Link and SMC are two network switch manufacturers that you might pick from when expanding your home or business computer network. Both brands produce a wide range of products and comparing individual products to each other may help you find the right hardware solution.
Newer television sets often incorporate features traditionally found on other devices that allow them to play media files, computer games, music and podcasts. These TVs can expand their capability through a CAT5 connection to a nearby PC, giving your home entertainment center access to the computer's media library and network connection.
Some computer technicians refer to NIC teaming as Ethernet/NIC bonding, link aggregation or sometimes even link-bundling or trunking. Nevertheless, all the terms refer to the same process of combining two or more physical network cards to create one logical network adapter. NIC teaming is useful for packet load balancing and improved throughput performance on servers as well as fault tolerance. If one of the physical NICs in the team fails, other adapters in the team continue to transmit and receive data. Windows does not support NIC teaming directly but rather depends on device-specific drivers to enable the feature. If you…
Cat5, or Category 5, Ethernet cable is a major component of many networks, but it comes with length limits than can make running large networks difficult. While wireless networking is also an option, it is less secure and less reliable than a wired network, especially for special transmissions such as KVM signals. Using a correctly set up Cat5 extender can allow you to control virtual machines or send other signals over a much longer distance than unextended Cat5 cables.
Time Division Multiplexing, or TDM, and Time Division Multiple Access, or TDMA, are forms of networking multiplexing -- a technology used for the analog or digital transmission of data packets. Both types of technologies transmit multiple streams of data from one device to another, but the way in which they perform this differs slightly.
ProCurve Manager is an application designed by Hewlett-Packard for managing computer networks of varying sizes. Among its features are auto-discovery of network devices and monitoring of the devices on the network. If you're just getting started with the platform, the first steps involve setting up the program on your computer. From there, you'll have a host of options for adding and keeping track of the devices connected to your network.
If you want to install an operating system easily and unattended on multiple computers connected to a network, you should set up a PXE (Pre-eXecution Environment) server with kickstart. The computer's network interface controller (NIC) card sends a broadcast request for DHCP information, receives the information (IP, subnet and subnet mask), connects to the PXE server and uses the kickstart configuration file to install the OS from the server. If you set up your PXE server correctly, you can install the operating system automatically on dozens of client computers.
Several factors must be considered when seeking the best 24-port gigabit switch. You need accessibility in order to physically reconfigure the switch quickly. Manageability is a must to reconfigure the switch at a moment’s notice. Scalability is vital in order to upgrade firmware and add additional switches as required for your enterprise. Finally, the you must consider price; avoid overspending for features that you will never require in the future.
The use of the terminal server in the Windows operating system facilitates remote workstation capability, allowing many different computers to access the same system files from a central server. Security access problems can create a situation where remote users cannot run certain files from their computers. This is likely an indication that the terminal server firewall has restricted a user's access to a program.
Subnet is short for sub network and the process of subnetting involves dividing a large, physical network into two or more smaller, logical networks, which share a network address. Subnets typically correspond to single, indivisible segments of a local area network. Subnetting a network can improve its performance and security, so it is useful to know how to easily subnet a network without performing any complicated binary arithmetic.
DFS, or Distributed File System, is a package of server and client services that enables Microsoft Windows Server 2008 administrators to organize Common Internet File System (CIFS) shares into a file system. The file system is distributed on multiple computers, but the CIFS locations are logically grouped in the DFS root. If one of your computers is unable to access all parts of the file system, your entire network might be at risk. Troubleshooting a DFS is not a very complex task and can be done using native tools, such as dfsutil, ping and ipconfig.
High-definition video provides a clearer and more defined picture than the consumer digital video often found on standard DVDs. When streaming HD video, you need to stream it at a rate that's high enough to provide the full content contained in the HD video to view the stream in full high definition. Home networks are better suited for this type of streaming than the Internet because they can often support the large bandwidth and connection speeds required to stream large amounts of content.
A repeater is a network or communications device that distributes, or propagates, electric signals from one cable to another. By doing so, the repeater amplifies the signal to restore it to full strength. Repeaters are used to counter the decrease in energy, known as attenuation, which occurs when signals travel long distances.
The Norton 360 security suite of programs is designed to protect your computer from a vast number of threats. This very protection can actually get in the way when you attempt to set up a Windows HomeGroup network. When you know how to configure Norton 360, establishing and using your network is possible.
The D-Link DNS-321 is a two-bay, network-attached storage enclosure that provides data access to individual computers. The DNS-321 is particularly suited to backups as it offers additional security in the form of hardware redundancy. Macintosh computers can access a D-Link DNS-321 on their network, as long as you use the appropriate file sharing protocol. Some features may not be available, however, and you will not be able to use all of Apple's software to access the remote drive. For example, Apple's Time Machine software will not allow backups to a DNS-321 drive across the network.
A virtual local area network, OR VLAN, provides the ability to create multiple LANs within a single physical network. To set up DHCP for the VLANs, first set up the network interfaces for each VLAN and then establish the DHCP settings for each VLAN. When you configure DHCP, treat each VLAN as though it were a separate physical interface on the machine, just as a DHCP client does when requesting a new address.
Dynamic host configuration protocol is commonly used in networks both large and small. DHCP assigns IP addresses to host computers such as database, workstation and Web servers. The scope defines the range of IP addresses assigned to workstations, servers and printers in a section of your network. DHCP servers give you the ability to define multiple scopes.
Network interface controllers (NIC), or network cards, connect computers to a local area network (LAN) -- a computer network confined to a small area, such as a home. On the NIC there is a registered jack to which Ethernet or Internet cables connect, enabling the computer to interface with a cable modem.
A GE gigabit port is the part of a computer through which an Ethernet cable connector provides high-speed networking functionality. This port is part of a type of Ethernet card known as a Gigabit Ethernet Interface Processor, or GEIP, which sits inside a computer on its motherboard, but its ports are accessible from outside the computer.
A dynamic host configuration protocol, or DHCP, is the part of a local area network that assigns dynamic Internet protocol, or IP, addresses to network devices. Typically, the DHCP area is situated on a broadband Internet connection’s firmware and allows you to let a network router’s DHCP server to automatically assign IP addresses to the LAN’s connected devices, such as computers and printers.
In the Microsoft Windows operating system networking environment, a HOSTS file enables a computer to connect to the Internet. LMHOSTS files are plain-text files that instruct the computer on how to locate and connect to another computer on a local area network. Each of these files plays an important role in computer networking and is different in several areas.
Fiber optic cable consists of a cylindrical glass thread, or core, surrounded by a jacket made from aramid fiber -- a strong, fire-resistant material -- and a jacket made from polyvinyl chloride (PVC). Fiber optic cable is manufactured in two basic types, known as single mode and multimode, which are both frequently used on local area networks. Single mode and multimode fiber optic cable appear identical externally, but operate differently internally and have different characteristics.
Downloading and installing management information base files into CiscoWorks allows you to extend the capabilities of the program. MIB files can, for example, add support for additional networking hardware or software to CiscoWorks. You can download and install MIB files into CiscoWorks by visiting a specific webpage, downloading the required MIB's and compiling them.
EIGRP stands for Enhanced Interior Gateway Routing Protocol and refers to a routing protocol developed by networking product manufacturer Cisco. A routing protocol is a formal set of rules that governs how units of data, known as packets, are forwarded, or “routed,” from one computer network to another. Once you’ve completed the basic configuration of EIGRP, you need to verify that it’s working properly.
A Local Area Network, or LAN, provides shared access to resources for a group of computers that are physically close to one another. With a LAN, you can share Internet access, printers, disk space and even files among users connected to the LAN. However, not all resources are available to everyone and you will receive an error that you don't have permission if you try to access a resource that's not been made available to you.
Virtualization tools developed and maintained by VMware are among the best tools on the market today. VMware Workstation is VMware's main desktop software and works on all operating systems that can be used as servers. A template is a master image of a virtual machine that can be used to create multiple virtual machines. This eases the task of creating virtual machines and minimizes the risk of errors. You can convert a virtual machine to a template (losing the virtual machine), clone the virtual machine to a template (keeping the virtual machine in place) or clone a template to a…
Secure Copy Protocol and File Transfer Protocol both offer simple command line methods for transferring files between computers, but that's pretty much where the similarities end. SCP is better designed for a one-time transfer between two computers on the same network, though it can be used remotely over the Internet as well. Conversely, FTP is used to not only transfer data to a remote server, but also to manage that data.
Windows Media Player lets you broadcast and connect with the PS3, so you can watch movies, listen to music and play videos on your television. The files are stored on your local desktop, and the PS3 streams the videos using the wireless network connection. You set up the desktop Windows Media Player to broadcast the videos for use on the PS3.
At the time of publication, many TV networks offer streaming video content of their programming for viewing on a computer. You can also watch this streaming content directly on your TV, but the unit must be Internet ready. TVs with this feature are equipped with Ethernet or Wi-Fi technology and access the Web and streaming video through a computer router.
When new internetwork standards arise, companies may find it difficult and costly to upgrade the infrastructure in order to ensure compliance with the new standards. To keep businesses running smoothly, most standards will allow provide a transition period in which existing technology can operate in conjunction with the new standard. As implementation of IPv6 networks occurred, Microsoft developed an interface called the Intra-site Automatic Tunnel Addressing Protocol, or ISATAP, to help facilitate the transition between existing IPv4 networks to the new IPv6 networks.
Dell’s line of Alienware laptop computers comes with USB 2.0 ports that accommodate connections to devices which are compatible with USB 2.0 technology, such as mice and personal audio players. As convenient as USB 2.0 technology is, it can also cause electronics devices to experience problems when interacting with each other.
The Windows "tmp" variable points to the folder in which you keep temporary files. You can change the default folder to your own temporary folder stored on the computer. After you create the folder, you set up the directory in the Windows environment variable settings, which binds the folder to your computer's setup. After it's bound, any time your computer needs a temporary folder, it uses the folder you bound in the settings.
A subnet is a portion of a network in which all the machines share the same Internet Protocol, or IP, address. IP addresses consist of 32-number strings of binary notation, and part of that string helps determine the address for each of your subnetworks. The subnet portion of the string determines the maximum number of subnets available.
Gigabit Ethernet is a networking standard that allows for transfer speeds up to 1Gbit per second over a local area network. It is 10 times faster than the previous standard, which offered speeds up to 100Mbits per second. A Gigabit Ethernet switch can improve the speed of your home network.
Video files are frequently viewed on a computing device, such as a laptop or desktop computer, after the file has been transferred from another USB-equipped device, such as a digital camcorder. You can also watch a video file on one device while it's streamed from another device through a USB connection. At the time of publication, USB technology exists in three forms, each of which transfers data at different rates.
Tags are a method of identifying computer network traffic and channeling the traffic to the right destination. Local Area Networks don't need tags, but VLANs -- Virtual Local Area Networks -- frequently change their architecture and network segments. Addresses on the networks aren't consistent over time, but tagging traffic enables data packets to find their correct recipient.
PC speeds have increased greatly since IBM first released the personal computer in the 1980s. Nevertheless, a single PC cannot process data or information nearly as fast supercomputers used by government agencies and many educational institutions. However, because a supercomputer is simply a network of multiple smaller computers working to process information in parallel, it is possible to create your own supercomputer cluster. Using Windows server software and some basic networking equipment allows you to run applications that support the Message Passing Interface -- MPI -- standard for parallel computing, which turns multiple PCs into one super computer.
To work with a mixed network, you must change the cluster information in a Windows network to work with the heterogeneous environment. The Windows cluster settings include the option for a mixed network, so you only need to set the cluster configurations to recognize mixed network components without making major changes to the network setup.
A LAN is a local area network. Local networks connect devices within a network so that each computer in the network can see all the other network devices. When there are too many devices or too much traffic on the network, it may be beneficial to set up VLANs, or virtual local networks, to reduce total network traffic by limiting some networks to only a few of the other devices rather than the whole network.
The term subnetting refers to the creation of smaller computer networks, known as subnets, within a larger one. The concept of subnetting is fundamental to addressing and routing units of data, known as packets, across as network using a set of rules called the Internet Protocol. The IP identifies both the receiving and sending computers.
If a computer on one IP network -- IP is an abbreviation for Internet Protocol, a code used to label packets of data sent across the Internet -- wishes to communicate with another computer on a different IP network, it must find a route from one network to the other. A default static route is a route that matches all destinations, so a computer can communicate with unknown networks.
Most desktop computers and laptop computers are equipped with a network interface that facilitates connection to a network. These connections can be wired or wireless; most laptops have both types installed. Wired and wireless capacities offer flexible solutions to complement a laptop's portability, but installing multiple network cards in stationary computers offers its own unique benefits.
Category 5 cable is so defined because it meets the specifications to transmit data at 100 megahertz. Typically, Cat 5 cable is found in wired computer network installations. You may need to figure the maximum length of Cat 5 cable that you can run, the radius at which you can bend it or the number of cables that can be run through a conduit tube. All of the specifications for Cat 5 cable make figuring out how and where to use it for a straightforward task.
A lot of traffic passes over computer networks that owners or administrators don't know about. The IT world has dozens of programs available to change that. Using them makes it possible to monitor network traffic, whether the goal is to pinpoint a bottleneck or catch someone downloading porn. If you have a busy network, a single day's traffic can add up to more than you can analyze effectively. Before starting, decide what you want to learn from traffic analysis so that you don't bite off more data than you can chew.
The Windows firewall software blocks unwanted and unauthorized incoming traffic. Typically, your cable or DSL provider and internal network router block all potentially suspect incoming traffic, but some network setups allow more incoming traffic to specific computers such as a Windows server or gaming server computer. To block incoming anonymous proxy requests -- which by their nature, generally come from users hiding their identity -- you must have the IP addresses you want to block. You can find the relevant addresses in in your server's logs.
Juniper's Netscreen line of hardware firewalls can provide enterprise-level security to both small and large organizations. With the help of Juniper's Network Security Manager (NSM), formerly labeled the "Netscreen Security Manager," network administrator can implement custom security policies for their organization's network. And if you need to begin analyzing large amounts of data as soon as it becomes available, you can enable the PSH (Push) flag in NSM to push data packets through to the receiving server as soon as they become available -- you don't have to wait for the entire transfer to complete before scanning the data.
Chances are good that the computer you use has an RJ45 jack for making network connections. The RJ45 Ethernet connector, in wide use since the 1980s, permits high-speed data access to networks including the Internet. The cable used to connect computers to networks is standard and has an RJ45 plug on each end. For certain kinds of network connections, such as connecting two computers to each other, you need a crossover RJ45 cable in place of the standard cable.
Typically a wireless router connects to the Internet via a broadband digital subscriber line, which carries roughly five times more information than a dial-up connection. You can use a wireless router to build a network in your home, but you need a separate computer already set up to make the dial-up connection. This computer must also have an Ethernet card and must stay online while you are using the wireless connection. The computer itself can't use the wireless connection. You need computer skills to confidently enter the "advanced settings" of the control panel and the setup menu of the router.
Windows XP permissions, such as Write Attributes, Write Extended Attributes and Write Data, allows a remote user to sign in on your computer to access files and folders and change them. Some causes of not being able to give a user account write permissions in Windows XP include using Windows XP Home Edition, incompatible hard drive formats and using a guest account.
USB ports make it possible for you to connect peripheral devices, such as printers and mobile phones, to a computer for the purpose of transferring and synchronizing data. When these ports do not work properly or you are unable to access them, it’s time to test your tech knowledge and abilities. Above all, don’t panic. You can fix most of these problems easily.
USB ports and devices make connecting to another computing device convenient. USB technology has been around since 1996, and is a feature found on most modern computing devices. If your device is denied access to one of its USB features, do some troubleshooting to isolate and resolve the problem.
The Cisco Unity software lets you centralize all communication -- such as email, voicemail, text and fax messages -- on the company network. If you accidentally delete an important file, you must reinstall the software to repair the corrupted version on the server. Cisco includes a wizard for the Windows installation utility, so you can reinstall the server software with the same settings as your current setup.
Crimping new ends onto a Cat3 patch cord can resolve connectivity problems that lead to dropped connections and cause premature network equipment failure. Normal wear and tear can cause connectors to come loose over time, and many older cables were originally put together quickly using inadequate tools and procedures. The main cable length of a typical patch cord is durable and rarely fails unless subjected to abnormal conditions, so you can easily make one or more new patch cords from longer cables by crimping on a pair of new ends.
The Windows NT Server (NTS) operating system is an older server environment that is still used in some legacy networks. You can connect to the Windows NT Server computer using the Windows Explorer utility available in each version of Windows, and map a network drive to the server so that you can view, edit and copy files from the server to your local computer.
VMware View Machine software lets you manage users for your VMware client-server environment. VMware View Machine works with the Windows Global Policy Object (GPO), which is a management system in a Windows networking environment that controls user desktops, permissions and network resources. To build a roaming profile for VMware, you must enable the system in the GPO editor on your VMware server and set the path for the roaming profile. Each time a user logs in this profile is used for user settings.
A ".bat" file runs command prompt actions on a user's computer. Network administrators who want to push a bat -- short for "batch" -- file to all users on a Wi-Fi network can set up the log-in script for the user, so all users who log in will receive the updates in the bat file. You must save the bat file on a shared folder on a network computer and specify the file for your users.
The secure shell, or SSH, and secure copy protocol, or SCP, allow Cisco router administrators to connect to internal servers using encrypted connections and copy data from one router to another. The encrypted protocol protects your data when you remotely connect to the network from the Internet. You connect to the Cisco router from your computer using the configuration utility and use the command line to enable and configure the two protocols.
Windows clustering allows you to use several servers for one storage cluster. Create zones in the Windows server DNS settings to segment your clusters and set up zones for your users. Use the main DNS server in your cluster to set up the zones for your networking environment. For smaller networks, only one zone is necessary.
Sharing folders over a network on Windows computers gives access to files stored in the folder to other users on the network, known as a Homegroup in Windows. You can assign network sharing permissions to a single personal folder or all personal folders on your computer.
The Netopia 3347NWG is a router in the Netopia 3300-ENT series designed primarily for business use. It includes the ability to create local area networks over Ethernet or wireless connections, and can natively handle an incoming ADSL Internet connection from an Internet service provider without the need for a separate ADSL modem.
The Powershell interface included with Windows is a powerful tool that administrators can use to control computer accounts. Computer and network accounts are contained within an OU object. The Powershell language includes the syntax and statements that move specified accounts from one OU container to another. System administrators can use Powershell's text interface to move accounts more quickly than with the graphical interface.
Cisco Catalyst 2950 switches create a local area network or LAN in your home or office to provide wired connections for computers, printers and other network-enabled hardware. Switches work similarly to traditional routers but are better suited to handle the large amount of data associated with connecting multiple computers to a network. Configure the LAN ports on the Cisco Catalyst switch to distribute the Internet connection to numerous devices.
The VMware Virtual Center Server environment lets you manage several virtual machine from one central computer. The central server controls user permissions and acts as a gateway for each of your virtual machines. Before you move the Virtual Center Server, back up the SQL Server database that contains all of the pertinent information for managing the network servers.
Hyena network administration software allows you to control all parts of your local network, including computer workstations and servers. Administrator passwords are used to prevent users from performing some functions on a computer, such as installing new software. Regularly changing administrator passwords increases computer security. Hyena allows you to change the administrator password on a group of computers at once, instead of changing the password on each computer individually.
AOC files are components of IBM Tivoli Network Manager IP Edition. The files contribute towards the network management system by defining a hierarchy of classes of devices. The Network Manager explores a network, noting all the devices connected to it and categorizing these devices according to the definitions in the AOC files. AOC stands for Active Object Class.
Dynamic Host Control Protocol (DHCP) is a service that provides client addresses for IP networks. DHCP can provide several pieces of information for a client so that once connected, he can access the full allowable range of the particular network's services. Not all networks need a DHCP server, but several indicators exist that would cause a network administrator to use DHCP on his network.
Dynamic Host Control Protocol (DHCP) is a network service that accepts requests from connecting clients for an IP address. DHCP makes it easy to connect to a network without reconfiguring your computer, and is particularly useful for wireless networks. Occasionally, DHCP will not work properly due to one or more different reasons.
PXE, pronounced “pixie,” is the Pre-boot Execution Environment. This is a method for computers on a network to seek out and install start-up programs automatically. The benefit of the system is that it saves network administrators having to visit every new PC on the network to install boot-up programs off a disk. It also enables the configuration of network computers to be altered by posting one file on a server, which each computer will fetch on start up.
A “loopback” is a networking concept that refers to an address that exists solely to redirect traffic back to the current computer. DNS is also concerned with addressing. It is the method that supports Web addresses and enables computers to find out the real address of the computer hosting that website. A DNS loopback refers back to a Web address resident on the requesting computer.
Windows HomeGroup, introduced with Windows 7, was designed to simplify the sharing of files and printers between computers on a local network. One Windows computer creates a HomeGroup with a password. Other computers on the same network can connect to the HomeGroup using the password. Computers on the HomeGroup can access each other’s shared files and printers. You can customize the files and printers each computer shares on the network.
When a network comes up as “Unidentified” in Windows 7, it means that the operating system cannot find a way to access other network segments or the Internet. This often happens because of a router malfunction or a settings issue in the operating system unless you use Internet Connection Sharing, or ICS. A few verifications may tell you if this requires a visit to the IT guys or not.
In simple terms, a perimeter router is a router -- a device that forwards units of data, known as packets, between networks -- that is installed on a perimeter segment of a network. A perimeter segment is any network segment located outside corporate firewalls or that connects a network to an untrusted network.
Subnetting is a technique for dividing a large computer network into two or more separate but interconnected networks, known as subnets. When a computer on one subnet wants to communicate with another computer on a different subnet, it must find a route between the subnets. The basic purpose of connecting a router between two subnets is to forward units of data, known as packets, between them.
Wireless networking makes it possible connect computers to a broadband Internet connection, far away from the broadband router, without the need of cumbersome wires. Though not as portable as smaller mobile devices like laptops and smart phones, desktop computers can also use wireless networking through a wireless network card.
Network nodes are addressable devices such as file servers, workstations and peripherals attached to a computer network. The logical arrangement of the nodes on a network is known as the logical topology of the network. The logical topology describes how the network transfers data from one node to the next, regardless of physical layout.
The Omron Host Link Communication Server is a Windows application which acts as a server for other Windows programs. It allows other Windows applications access to data from programmable logic controllers, or PLCs, using its host link protocol. The Host Link server communicates with several types of Omron devices, one of which is the CS1 PLC. The PLCs can provide everything from simple loop control to advanced process control, integrating hardware, software and process management.
G-wireless cards and routers have become popular among operators of wireless local-area networks, or WLANs, because they're faster than older, b-wireless standards and backward compatible to systems that still run wireless-b networks. Qualcomm Atheros produces wireless networking cards for consumer use, and serves to provide wireless chips for integration into other manufacturer’s Ethernet cards as well. Because of this, Atheros manufactures nearly two dozen g-wireless capable cards and Ethernet chips, and most of its current line offer the superior n-wireless capabilities as well.
The Microsoft group policy object distributes network permissions and installation packages to each user who logs in to the network governed by an enterprise version of Microsoft's server software. You use the GPO to install the Google Earth software to all of your users. The Google Earth software is free for any user, and the executable file installs the necessary resources from the GPO package you publish on the network or the admin server.
Since the dawn of desktop computers, small offices have faced a perennial challenge when it comes to network solutions: they need most of the same features available to large companies, with only a fraction of the budget. Many small office network solutions are available that make being small a strength and not a weakness.
Most local computer networks run on the Ethernet standard and use CAT 5 cables to carry the signals. These cables have four sets of twisted pairs of wires inside a heavy plastic casing, and use CAT5 connectors, also called RJ45 connectors, to link to computers and routers. Computers connected to the cables use one set of wires for sending and one set for receiving. The other two sets are spares, and help reduce interference. Make sure to install the CAT5 connector with the correct sequence of wires, because the sending and receiving wires at either end must match.
The CiscoView and Health Monitor applications included with the CiscoWorks local area network management system use management information base files to acquire information about other devices on the network. The CiscoWorks applications can only use MIB files if they’re installed in your HP OpenView simple network management protocol MIB database. You can install the MIB files included with CiscoWorks in HP OpenView’s SNMP Manager. CiscoView and Health Monitor won’t display information about devices on the network until you install the MIB files.
Routing between network segments is a straightforward process, but doing it efficiently is more challenging. No matter how good your equipment, inefficient network design makes routing more complicated than necessary. For example, if a network has two network segments, each with a workstation and a computer, you can use the servers to route traffic between the segments without any added equipment. This works, but it isn't an optimum design: it puts added demands on the servers, and the routing fails if either server goes down. Good network design is essential for good routing.