Data Processing

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Power over Ethernet (POE)

Category: Hardware, network

As its name, POE, power over ethernet is using ethernet cable as a power resource, by this, it means you’re saving some spaces for using power supply. But basically this were often use for wireless access point devices, cause its place are close with ethernet cable and because placement of the devices might be in somewhere far from power supply.

Power over Ethernet is required to perform the injection power supply to the Wireless In A Box is mounted on a tower, POE beneficial to reduce power losses (losses) due to the use of cables and connectors. Lets have look on it.
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Understanding Firewall

Category: Computer, network

Another network security equipment you should have to secure your business or data is firewall. This is needed to authorizing network connection. There are several different types firewall available. They are differentiated primarily by the methods they use to filter data. An in-depth understanding of firewalls requires an understanding of the four basic categories they fall into—packet filters, circuit level gateways, application level gateways and stateful inspection firewalls. Firewall products can use one or more of these methods.

Packet filtering is one method that works by examining data packets as they pass through the firewall at the network layer. The firewall examines where the packet was sent from and its intended destination to determine whether it’s safe to let it into your network. A set of criteria is used to determine safety. This method is usually a part of a firewall in a router. Firewalls that use packet filtering can disable information from traveling to and from particular ports, but they are somewhat limited because they do not examine the actual data that is transmitted. They are, however, inexpensive and usually do not interfere with network performance noticeably.
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