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  2. Wildcard mask - Wikipedia

    en.wikipedia.org/wiki/Wildcard_mask

    A wildcard mask is a mask of bits that indicates which parts of an IP address are available for examination. 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 ...

  3. Subnet - Wikipedia

    en.wikipedia.org/wiki/Subnet

    The subnet router anycast address is the lowest address in the subnet, so it looks like the “network address”. If a router has multiple subnets on the same link, then it has multiple subnet router anycast addresses on that link. [19] The first and last address in any network or subnet is not allowed to be assigned to any individual host.

  4. Routing table - Wikipedia

    en.wikipedia.org/wiki/Routing_table

    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.

  5. List of DNS record types - Wikipedia

    en.wikipedia.org/wiki/List_of_DNS_record_types

    Returns all records of all types known to the name server. If the name server does not have any information on the name, the request will be forwarded on. The records returned may not be complete. For example, if there is both an A and an MX for a name, but the name server has only the A record cached, only the A record will be returned.

  6. Private network - Wikipedia

    en.wikipedia.org/wiki/Private_network

    RFC 1918 name IP address range Number of addresses Largest CIDR block (subnet mask) Host ID size Mask bits Classful description [Note 1]; 24-bit block: 10.0.0.0 – 10.255.255.255: 16 777 216

  7. Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    The prefix length can range from 0 to 128, due to the larger number of bits in the address. However, by convention, a subnet on broadcast MAC layer networks always has 64-bit host identifiers. [13] Larger prefixes (/127) are only used on some point-to-point links between routers, for security and policy reasons. [14]

  8. Anycast - Wikipedia

    en.wikipedia.org/wiki/Anycast

    Anycast is a network addressing and routing methodology in which a single IP address is shared by devices (generally servers) in multiple locations. Routers direct packets addressed to this destination to the location nearest the sender, using their normal decision-making algorithms, typically the lowest number of BGP network hops.

  9. List of TCP and UDP port numbers - Wikipedia

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

    Default for BMC Software Control-M/Server and Control-M/Agent for Server-to-Agent, though often changed during installation 7010: Unofficial: Default for Cisco AON AMC (AON Management Console) [304] 7022: Unofficial: MSSQL Server Replication and Database mirroring endpoints [243] 7023: Yes: Bryan Wilcutt T2-NMCS Protocol for SatCom Modems 7025 ...