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Learn about the special purposes and applications of various IP addresses or address blocks in IPv4 and IPv6. Find out the private network ranges, such as 10.0.0.0/8, 192.168.0.0/16, and 172.16.0.0/12.
Learn about the private IP address spaces for IPv4 and IPv6, and how they are used for local area networks (LANs) and carrier-grade NAT. See the RFC specifications, subnet masks, and address blocks for each range, and how to create unique local addresses (ULAs) in IPv6.
A default gateway is the node in a network that forwards packets to other networks when no other route matches the destination IP address. Learn how default gateways work, how to configure them, and see examples of single and multi-router networks.
An IP address is a numerical label assigned to a device connected to a network that uses the Internet Protocol for communication. Learn about the two main functions of IP addresses, the two versions of the Internet Protocol (IPv4 and IPv6), and the format and notation of IP addresses.
ICS is a Windows service that enables one computer to share its Internet connection with other computers on a LAN. It provides DHCP, NAT, and QoS services, and can be used with dial-up, PPPoE, and VPN connections.
Link-local addresses are network addresses that are valid only for communications on a local link. In IPv4, they are assigned from the address block 169.254.0.0 / 16, except for the first and last 256 addresses, which are reserved for future use.
A network address is an identifier for a node or host on a telecommunications network. Learn about different types of network addresses, such as IP, MAC, X.25, and telephone numbers, and how they are used for routing and communication.
CIDR (Classless Inter-Domain Routing) is a method for allocating IP addresses for IP routing, introduced in 1993 to replace the previous classful network architecture. CIDR uses variable-length subnet masking and CIDR notation to specify the network prefix and host identifier of an IP address.