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Label of a UMTS router with MAC addresses for LAN and WLAN modules. A MAC address (short for medium access control address or media access control address) is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment.
Ingress filtering for multihomed routers will accept the packet if there is a route back to its source address from any interface on the router. For this type of filtering, the router may also maintain an adjacency table, also organized for fast lookup, that keeps track of the router interface addresses that are on all directly connected ...
The physical gateway address is called the media access control(MAC) address or burned in address (BIA). The physical address is assigned when the device is manufactured, and cannot be changed. When a frame is sent to a device not on the local network, the gateway's MAC address is used in the frame header.
The network address and subnet mask of the interface, along with the interface type and number, are entered into the routing table as a directly connected network. A remote network is a network that can only be reached by sending the packet to another router. Routing table entries to remote networks may be either dynamic or static.
Two computers, A and B, are connected to the same local area network with no intervening gateway or router. A has a packet to send to IP address 192.168.0.55 which happens to be the address of B . Before sending the packet to B , A broadcasts an ARP request message – addressed with the broadcast MAC address FF:FF:FF:FF:FF:FF and requesting ...
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In computer networking, a port or port number is a number assigned to uniquely identify a connection endpoint and to direct data to a specific service. At the software level, within an operating system , a port is a logical construct that identifies a specific process or a type of network service .
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