Wednesday, November 25, 2009
Juniper routers
The Juniper Networks Secure Services Gateway 5 (SSG 5) and Secure Services Gateway 20 (SSG 20) are purpose-built security appliances that deliver a perfect blend of performance, security, routing and LAN/WAN connectivity for small branch office and small business deployments. Traffic flowing in and out of the branch office can be protected from worms, Spyware, Trojans, and malware by a complete set of Unified Threat Management (UTM) security features including Stateful firewall, IPSec VPN, IPS, Antivirus (includes Anti-Spyware, Anti-Adware, Anti-Phishing), Anti- Spam, and Web Filtering. The rich set of UTM security features allows the SSG 5 and SSG 20 to be deployed as a stand alone network protection device. With its robust routing engine, the SSG 5 and SSG 20 can also be deployed as a traditional branch office router or as a combination security and routing device to help reduce IT capital and operational expenditures.
Canopy Antenna
is a wireless networking system designed for WISP (wireless internet service providers) available in point-to-point and point-to-multipoint configurations. It includes both the original Motorola-designed products using the Canopy protocol and the PtP backhuals that were rebranded from Orthogon System which Motorola acquired in 2006.
Tuesday, November 24, 2009
The difference between router and switch
A switch uses a little more intelligence. It learns the IP address of each computer attached to it, by matching up IP addresses with hardware MAC (Medium Access Control)addresses. When data comes into the switch, it only sends data back out the port assigned to that computer’s MAC address. Switches are said to work at a hardware level, and help relieve bandwidth across the network.
A router is the most intelligent networking device. But routers aren’t like really intelligent switches, they actually work in a completely different way. Routers are designed to connect networks together. So, your internal network might have IP addresses, like 192.0.0.100, while your Internet service provider might give your computer an IP address that starts with 64.x.x.x. A router can take internal traffic bound for destinations out on the Internet in general, and route it from your internal network to the external network. Whenever you change networks, you need a router. And vice versa when information comes from the external network to your home network.
A switch sorts and distributes the network packets sent between the devices on a local area network (LAN), while a router is a gateway that connects two or more networks, which can be any combination of LANs, wide area networks (WAN), or the Internet.
Modular Jacks
Modular jack connectors, a cornerstone of communications technology, have been used in the telecommunications and Ethernet industry for many years. The main reasons for this are the simplicity and reliability of these products. Whether integrated in a simple telephone system, or in a gigabit application, “mod. jacks” represent the standard for network connections. Mod. jacks can be obtained in many different versions. Increasing data rates and space-saving requirements are driving increasing requests for these connectors with integrated filter components.
what is patch panel?
Also known as a jackfield or patch bay, a patch panel is a panel that contains multiple cable connections. The back of the panel has wiring or other connective cabling that runs to disparate equipment. The front of the patch panel allows easy access to connect the different equipment through the use of short patch cables. One common example of this concept was before automatic telephone switching became widespread; early telephone operators would connect callers to their intended parties manually by plugging in a cable on the switchboard.
Patch panels are used in a variety of fields and applications. Telephone and cable companies built patch panel cabinets in neighborhoods that allow their roaming technicians to make a quick change at the cabinet to deploy or disconnect service to your home. Auditoriums and stage theaters usually have patch panels connecting the various audio-visual components to aid with performances and presentations. Radio stations, recording studios, television broadcast studios, and other media-heavy services require extensive abilities to connect and route data and media to different devices as a part of their productions. Local Area Networks and larger networks such as the global internet where you are reading this also make extensive use of patch panels and other types of connection terminals.
Subscribe to:
Posts (Atom)