Product DescriptionAuthorized Self-Study Guide Cisco Voice over IP (CVOICE) Third Edition Foundation learning for CVOICE test 642-436 Kevin Wallace, CCIE No. 7945 Cisco Voice over IP (CVOICE), Third Edition is a Cisco authorized self-paced learning tool for CCVP for basic education. This book provides you with the necessary knowledge and skills to plan, develop and transfer a Cisco Voice over IP (VoIP) and to integrate gateways and guards in the business. . . More>>
Archive for the ‘Internet’ Category
May 25 2009
Belkin Wireless Cable/DSL Router Review
May 25th, 2009
feed Robert asked:
desktop computers are still popular, wireless laptops have become the norm due to the fact that you can use it anywhere in your home. With the Belkin Wireless Cable/DSL Router, this technology offers you the freedom to work in any room in your home or apartment. For home businesses, the Belkin router is ideal because there are no cables and wires that inhibit movement from one room to another. Even in a small apartment, the Belkin allows you to network between your desktop and laptop in an easy and affordable way by offering up to 400 feet of coverage. You can transfer files from one computer to another and print information in one room while the printer is located in another. In fact, with the summer weather approaching you can utilize your patio and enjoy the outdoors while attending to whatever work needs to be done. The Belkin router includes the following features: * Offers backward-compatibility with all 802.11b devices * Sets up easily with Belkin Easy Install Wizard * Ensures data and network security with wireless 64- and 128-bit WEP encryption * Uses NAT and SPI firewall to protect network from outside intrusions by hackers * Device Type: Wireless Router * Form Factor: Desktop * Wireless Network Standards: IEEE 802.11g * Wireless Network Standards: IEEE 802.11b * Wireless Data Transfer Rates: 54 Mbps * Security Protocols: 128-bit WEP * Security Protocols: 64-bit WEP * Networking Standards: IEEE 802.3 Ethernet 10Base-T * Networking Standards: IEEE 802.3u Ethernet 100Base-TX * Routing / Firewall Protoccols: DHCP * Routing / Firewall Protoccols: Network Address Translation (NAT) * Firewall Features: MAC Address Filtering The Belkin router is compact and easy to install. In fact some users have commented that they set up the router in a closet and still maintained strong signals from it. It is compatible with Windows Vista as well as other operating systems, and most users were amazed at not only how easy the software was to install, but afterward had an instant connection. Moreover, the fact that the Belkin works with a cable modem and DSL line is a plus! While there are many individuals who are tied to desktop computers, many have purchased a laptop with the Belkin wireless router to afford them the opportunity to work from any room in their home. More importantly, however, the ability to network has become more popular today than ever before. Home businesses find networking a necessity, and the Belkin provides an alternative to desktop computing. If you have a desktop PC at home and have purchased a laptop that you would like to use as part of a network, check out the Belkin Wireless router. Get A Great Deal On On A Belkin Wireless Cable/DSL Router From eBay:….. [phpbay]Belkin Wireless Cable/DSL Router, 3[/phpbay]
desktop computers are still popular, wireless laptops have become the norm due to the fact that you can use it anywhere in your home. With the Belkin Wireless Cable/DSL Router, this technology offers you the freedom to work in any room in your home or apartment. For home businesses, the Belkin router is ideal because there are no cables and wires that inhibit movement from one room to another. Even in a small apartment, the Belkin allows you to network between your desktop and laptop in an easy and affordable way by offering up to 400 feet of coverage. You can transfer files from one computer to another and print information in one room while the printer is located in another. In fact, with the summer weather approaching you can utilize your patio and enjoy the outdoors while attending to whatever work needs to be done. The Belkin router includes the following features: * Offers backward-compatibility with all 802.11b devices * Sets up easily with Belkin Easy Install Wizard * Ensures data and network security with wireless 64- and 128-bit WEP encryption * Uses NAT and SPI firewall to protect network from outside intrusions by hackers * Device Type: Wireless Router * Form Factor: Desktop * Wireless Network Standards: IEEE 802.11g * Wireless Network Standards: IEEE 802.11b * Wireless Data Transfer Rates: 54 Mbps * Security Protocols: 128-bit WEP * Security Protocols: 64-bit WEP * Networking Standards: IEEE 802.3 Ethernet 10Base-T * Networking Standards: IEEE 802.3u Ethernet 100Base-TX * Routing / Firewall Protoccols: DHCP * Routing / Firewall Protoccols: Network Address Translation (NAT) * Firewall Features: MAC Address Filtering The Belkin router is compact and easy to install. In fact some users have commented that they set up the router in a closet and still maintained strong signals from it. It is compatible with Windows Vista as well as other operating systems, and most users were amazed at not only how easy the software was to install, but afterward had an instant connection. Moreover, the fact that the Belkin works with a cable modem and DSL line is a plus! While there are many individuals who are tied to desktop computers, many have purchased a laptop with the Belkin wireless router to afford them the opportunity to work from any room in their home. More importantly, however, the ability to network has become more popular today than ever before. Home businesses find networking a necessity, and the Belkin provides an alternative to desktop computing. If you have a desktop PC at home and have purchased a laptop that you would like to use as part of a network, check out the Belkin Wireless router. Get A Great Deal On On A Belkin Wireless Cable/DSL Router From eBay:….. [phpbay]Belkin Wireless Cable/DSL Router, 3[/phpbay]
March 28 2009
Network Troubleshooting Made Easy With Colasoft Packet Sniffer
March 28th, 2009
feed Robert asked:
The Challenge
As the business is becoming more and more networked, it’s always necessary for network administrators to troubleshoot network issues in shortest time possible if the network is not functioning properly. Network downtime or network malfunction may cause headaching inconvenience or even millions of business losses if not settled up in time. Without a handy tool, network troubleshooting can be time-consuming and frustrating.
Old Ways: Time-consuming and Frustrating
There are a lot of articles providing guidance on how to troubleshoot network issues in general ways. For simple networking issues, these tutorials work fine. However, for a company-level network, issues are often complicated and mixed, and these issues require deeper analysis and stronger diagnosis abilities. Obviously, old ways are no longer suitable for today’s in-time network troubleshooting demands.
Troubleshooting Network Issues in Seconds
To troubleshoot your network in time, even in seconds is now possible with Capsa’s diagnosis feature. Network issues are automatically detected and clearly identified, with possible causes and solutions provided.
Automatic Diagnosis
Based on Colasoft’s packet analysis engine, Capsa is able to automatically detect network issues in different OSI layers, such as application layer, transport layer, and network layer. All these issues are marked with different severity levels, indicating which are critical issues that need to be addressed immediately, which are just informative messages.
Quick Locate Suspicious Host
Once a critical network issue is detected and requires immediate handling, we can select the item from the list, then detailed information will be provided under, including source, destination, port and so on. We can easily locate the suspicious host in this field, for example, the attacking host or the host which is spamming our network. Moreover, after locating the suspicious host, we can conduct deeper analysis, such as protocol analyzing or packet decoding.
Possible Causes & Solutions
When selecting a network issue from the list, possible causes and solutions are also provided for users to understand the issue and solve it as soon as possible.
Customizable
Depending on network sizes and network’s characteristics, we can customize the threshold that triggers one diagnosis event and the severity of the network issue.
Conclusion
It is always good to maintain the network running smoothly and properly without any problems. However, if a network issue arises, we must make sure it is quickly detected and solved before it affects the entire infrastructure and brings loss to our business. For the complexity of the network and variety of network applications, network troubleshooting is becoming more challenging and demanding. To have a powerful tool like Capsa in hand is must in everyday’s network management.
About Colasoft
Ever since 2001, Colasoft has been dedicated in providing all-in-one and easy-to-use network analysis software for customers to monitor, analyze, and troubleshoot their network. Up to now, more than 4000 customers in over 70 countries trust the flagship product – Capsa as their network monitoring and troubleshooting solution. The company also offers four free network utilities: Colasoft Packet Builder, Colasoft Packet Player, Colasoft MAC Scanner, and Colasoft Ping Tool. Learn more today at http://www.colasoft.com
The Challenge
As the business is becoming more and more networked, it’s always necessary for network administrators to troubleshoot network issues in shortest time possible if the network is not functioning properly. Network downtime or network malfunction may cause headaching inconvenience or even millions of business losses if not settled up in time. Without a handy tool, network troubleshooting can be time-consuming and frustrating.
Old Ways: Time-consuming and Frustrating
There are a lot of articles providing guidance on how to troubleshoot network issues in general ways. For simple networking issues, these tutorials work fine. However, for a company-level network, issues are often complicated and mixed, and these issues require deeper analysis and stronger diagnosis abilities. Obviously, old ways are no longer suitable for today’s in-time network troubleshooting demands.
Troubleshooting Network Issues in Seconds
To troubleshoot your network in time, even in seconds is now possible with Capsa’s diagnosis feature. Network issues are automatically detected and clearly identified, with possible causes and solutions provided.
Automatic Diagnosis
Based on Colasoft’s packet analysis engine, Capsa is able to automatically detect network issues in different OSI layers, such as application layer, transport layer, and network layer. All these issues are marked with different severity levels, indicating which are critical issues that need to be addressed immediately, which are just informative messages.
Quick Locate Suspicious Host
Once a critical network issue is detected and requires immediate handling, we can select the item from the list, then detailed information will be provided under, including source, destination, port and so on. We can easily locate the suspicious host in this field, for example, the attacking host or the host which is spamming our network. Moreover, after locating the suspicious host, we can conduct deeper analysis, such as protocol analyzing or packet decoding.
Possible Causes & Solutions
When selecting a network issue from the list, possible causes and solutions are also provided for users to understand the issue and solve it as soon as possible.
Customizable
Depending on network sizes and network’s characteristics, we can customize the threshold that triggers one diagnosis event and the severity of the network issue.
Conclusion
It is always good to maintain the network running smoothly and properly without any problems. However, if a network issue arises, we must make sure it is quickly detected and solved before it affects the entire infrastructure and brings loss to our business. For the complexity of the network and variety of network applications, network troubleshooting is becoming more challenging and demanding. To have a powerful tool like Capsa in hand is must in everyday’s network management.
About Colasoft
Ever since 2001, Colasoft has been dedicated in providing all-in-one and easy-to-use network analysis software for customers to monitor, analyze, and troubleshoot their network. Up to now, more than 4000 customers in over 70 countries trust the flagship product – Capsa as their network monitoring and troubleshooting solution. The company also offers four free network utilities: Colasoft Packet Builder, Colasoft Packet Player, Colasoft MAC Scanner, and Colasoft Ping Tool. Learn more today at http://www.colasoft.com
March 20 2009
Computer Networking Fundamentals
March 20th, 2009
feed Sue Jan asked:
The sharing of fax machines, printers, and modems amongst many computers and users reduce the operational cost. A database on a computer network is a very important application as it stores and runs many important data and jobs. Emails and chats can be used for instantaneous communication and sending of files on a computer network.
The computer networks are classified, depending upon the size, as Local Area Networks (LAN), Wide Area Networks (WAN), Metropolitan Area Networks (MAN) and Personal Area Networks (PAN). The topology (topology is the way the computer networks and network resources are connected) of the networking can be classified as Bus Network, Ring Network and Star Network.
The networking hardware basically consists of wiring, network cards and a hub. Computer network cards are required so that one computer can understand what the other computer is “talkingâ€Â. Network cards have a unique MAC address to identify computers on a computer network. Hubs connect all the computers in the network. Hubs can also be used to connect to other hubs to increase the size of the computer network. Two computers can be connected using Ethernet cards or phone lines or power lines for communication, with hardware kits available at roughly a cost of $100.
As the number of computers in an office or a home increases, so do the number of cables, so wireless networking is a viable solution. In wireless networking radio transreceivers or infrared signals are used to communicate between computers and devices. Examples of wireless networking include Wi-fi and Bluetooth technology, though there may be security issues involved in wireless networking. However there definitely is a stronger preference towards wireless networking nowadays among consumers.
Computer networks have added a new dimension to the 21st century. Today the cyber world is much faster and wider than the real world. This has all been made possible due to computer networks. Computer networks have revolutionized business, communication, travel, research, defense, society and almost all human endeavors. The evolution of computer networks has helped the technological revolution take a big leap forward.
The sharing of fax machines, printers, and modems amongst many computers and users reduce the operational cost. A database on a computer network is a very important application as it stores and runs many important data and jobs. Emails and chats can be used for instantaneous communication and sending of files on a computer network.
The computer networks are classified, depending upon the size, as Local Area Networks (LAN), Wide Area Networks (WAN), Metropolitan Area Networks (MAN) and Personal Area Networks (PAN). The topology (topology is the way the computer networks and network resources are connected) of the networking can be classified as Bus Network, Ring Network and Star Network.
The networking hardware basically consists of wiring, network cards and a hub. Computer network cards are required so that one computer can understand what the other computer is “talkingâ€Â. Network cards have a unique MAC address to identify computers on a computer network. Hubs connect all the computers in the network. Hubs can also be used to connect to other hubs to increase the size of the computer network. Two computers can be connected using Ethernet cards or phone lines or power lines for communication, with hardware kits available at roughly a cost of $100.
As the number of computers in an office or a home increases, so do the number of cables, so wireless networking is a viable solution. In wireless networking radio transreceivers or infrared signals are used to communicate between computers and devices. Examples of wireless networking include Wi-fi and Bluetooth technology, though there may be security issues involved in wireless networking. However there definitely is a stronger preference towards wireless networking nowadays among consumers.
Computer networks have added a new dimension to the 21st century. Today the cyber world is much faster and wider than the real world. This has all been made possible due to computer networks. Computer networks have revolutionized business, communication, travel, research, defense, society and almost all human endeavors. The evolution of computer networks has helped the technological revolution take a big leap forward.
March 20 2009
New VoIP Technology: Available To Customers Anywhere In The World
March 20th, 2009
feed Anthony Coleman asked:
The world of communications is opening up to consumers around the globe and the reason for that is Voice over Internet Protocol, otherwise known as VoIP.
Using VoIP phone service is simple and in many cases more convenient for customers than using a traditional land line to land line connection. In fact, most consumers are delighted to find out that no land line is needed for making VoIP calls. All that is needed is an Internet connection. In remote locations where phone service is either non-existent or unreliable; Internet connections via satellite have opened up a whole new world of voice communications.
In the past few years, VoIP providers have grown in numbers offering more competitive services and rates to consumers. In some cases VoIP to VoIP calls are free to customers the world over and this is especially true in places that have currently low traffic on their VoIP lines and in other cases, there may be a small charge incurred by the VoIP user for calling a land line or Public Switched Telephone Network (PSTN).
There are two main types of land line to VoIP services. The first is by direct dialing where the land line user calls a number the connects directly to the VoIP user. The other type is using an access number where a local number is dialed and an extension number that has been assigned to the VoIP user is dialed, thereby connecting the call.
VoIP has opened up communications and the ability for smaller countries to compete in the global market by having access to both contacting clients and customers all over the world via VoIP services. This levels the playing field and allows companies to offer direct one-on-one customer service to anyone that needs to speak to a representative about a product or service or someone that needs help with a purchase they have made, even if that customer is half a world away. The zero to low VoIP rates on most calls make this a very economical form of business communication as well as for personal use for families that are scattered around the globe to keep in touch.
Mobile phones are also being seamlessly integrated into VoIP communications. Phones with WiFi are VoIP capable and this allows cell phone uses to also take advantage of the affordable VoIP rates for calling around the world, however pay close attention to your own cell phone. company’s charges for Internet access when using WiFi. This is often a very economical way for International travelers to keep in touch with their company or family when on the road.
Fees for VoIP can vary from country to country. Many VoIP services are offering flat rates for in-country dialing and some countries offer free VoIP to VoIP calling no matter where the calls are made. It’s worth it to look around and see what is available so you get the best VoIP service rate.
The demand for VoIP is continuing to grow and as the technology develops, more and more consumers around the world will continue to benefit from this state of the art form of communication that makes it easier than ever for both businesses and individuals to just stay in touch. BEST VoIP SERVICE: http://www.acolemanvoip.i-fortuity.com
The world of communications is opening up to consumers around the globe and the reason for that is Voice over Internet Protocol, otherwise known as VoIP.
Using VoIP phone service is simple and in many cases more convenient for customers than using a traditional land line to land line connection. In fact, most consumers are delighted to find out that no land line is needed for making VoIP calls. All that is needed is an Internet connection. In remote locations where phone service is either non-existent or unreliable; Internet connections via satellite have opened up a whole new world of voice communications.
In the past few years, VoIP providers have grown in numbers offering more competitive services and rates to consumers. In some cases VoIP to VoIP calls are free to customers the world over and this is especially true in places that have currently low traffic on their VoIP lines and in other cases, there may be a small charge incurred by the VoIP user for calling a land line or Public Switched Telephone Network (PSTN).
There are two main types of land line to VoIP services. The first is by direct dialing where the land line user calls a number the connects directly to the VoIP user. The other type is using an access number where a local number is dialed and an extension number that has been assigned to the VoIP user is dialed, thereby connecting the call.
VoIP has opened up communications and the ability for smaller countries to compete in the global market by having access to both contacting clients and customers all over the world via VoIP services. This levels the playing field and allows companies to offer direct one-on-one customer service to anyone that needs to speak to a representative about a product or service or someone that needs help with a purchase they have made, even if that customer is half a world away. The zero to low VoIP rates on most calls make this a very economical form of business communication as well as for personal use for families that are scattered around the globe to keep in touch.
Mobile phones are also being seamlessly integrated into VoIP communications. Phones with WiFi are VoIP capable and this allows cell phone uses to also take advantage of the affordable VoIP rates for calling around the world, however pay close attention to your own cell phone. company’s charges for Internet access when using WiFi. This is often a very economical way for International travelers to keep in touch with their company or family when on the road.
Fees for VoIP can vary from country to country. Many VoIP services are offering flat rates for in-country dialing and some countries offer free VoIP to VoIP calling no matter where the calls are made. It’s worth it to look around and see what is available so you get the best VoIP service rate.
The demand for VoIP is continuing to grow and as the technology develops, more and more consumers around the world will continue to benefit from this state of the art form of communication that makes it easier than ever for both businesses and individuals to just stay in touch. BEST VoIP SERVICE: http://www.acolemanvoip.i-fortuity.com

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