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2. Broadcast address - Wikipedia

   en.wikipedia.org/wiki/Broadcast_address

   A special definition exists for the IP address 255.255.255.255. It is the broadcast address of the zero network or 0.0.0.0, which in Internet Protocol standards stands for this network, i.e. the local network. Transmission to this address is limited by definition, in that it is never forwarded by the routers connecting the local network to ...

3. Reserved IP addresses - Wikipedia

   en.wikipedia.org/wiki/Reserved_IP_addresses

   Used for local communications within a private network [3] 100.64.0.0/10 100.64.0.0–100.127.255.255 4 194 304: Private network Shared address space [4] for communications between a service provider and its subscribers when using a carrier-grade NAT: 127.0.0.0/8 127.0.0.0–127.255.255.255 16 777 216: Host Used for loopback addresses to the ...

4. IP address - Wikipedia

   en.wikipedia.org/wiki/IP_address

   The term subnet mask is only used within IPv4. Both IP versions however use the CIDR concept and notation. In this, the IP address is followed by a slash and the number (in decimal) of bits used for the network part, also called the routing prefix. For example, an IPv4 address and its subnet mask may be 192.0.2.1 and 255.255.255.0, respectively.

5. List of TCP and UDP port numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_TCP_and_UDP_port...

   They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well-known ports.

6. Wildcard mask - Wikipedia

   en.wikipedia.org/wiki/Wildcard_mask

   In the Cisco IOS, [1] they are used in several places, for example: To indicate the size of a network or subnet for some routing protocols, such as OSPF. To indicate what IP addresses should be permitted or denied in access control lists (ACLs). A wildcard mask can be thought of as an inverted subnet mask.

7. Multicast address - Wikipedia

   en.wikipedia.org/wiki/Multicast_address

   A multicast address is a logical identifier for a group of hosts in a computer network that are available to process datagrams or frames intended to be multicast for a designated network service.

8. Subnet - Wikipedia

   en.wikipedia.org/wiki/Subnet

   The ones indicate bits in the address used for the network prefix and the trailing block of zeros designates that part as being the host identifier. The following example shows the separation of the network prefix and the host identifier from an address ( 192.0.2.130 ) and its associated / 24 subnet mask ( 255.255.255.0 ).

9. Default gateway - Wikipedia

   en.wikipedia.org/wiki/Default_gateway

   The networking software stack of each computer contains a routing table that specifies which interface is used for transmission and which router on the network is responsible for forwarding to a specific set of addresses. If none of these forwarding rules is appropriate for a given destination address, the default gateway is chosen as the ...