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  2. 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.

  3. IP address - Wikipedia

    en.wikipedia.org/wiki/IP_address

    All receivers capture the network packet. The address 255.255.255.255 is used for network broadcast. In addition, a more limited directed broadcast uses the all-ones host address with the network prefix. For example, the destination address used for directed broadcast to devices on the network 192.0.2.0 / 24 is 192.0.2.255. [24]

  4. 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 ...

  5. Talk:Broadcast domain - Wikipedia

    en.wikipedia.org/wiki/Talk:Broadcast_domain

    The Boardcast Domain is defined by the Layer 3 Internet Protocol, not by any of the currently or previously used Layer 2 protocols. Ethernet does not, PPP does not, ATM does not, NetBEUI does not. If you can prove me wrong, I dare you to. Name the protocol and addressing scheme used and methods used. What is the layer 2 broadcast address?

  6. Reserved IP addresses - Wikipedia

    en.wikipedia.org/wiki/Reserved_IP_addresses

    Used for link-local addresses [5] between two hosts on a single link when no IP address is otherwise specified, such as would have normally been retrieved from a DHCP server 172.16.0.0/12 172.16.0.0–172.31.255.255 1 048 576: Private network Used for local communications within a private network [3] 192.0.0.0/24 192.0.0.0–192.0.0.255 256

  7. Multicast address - Wikipedia

    en.wikipedia.org/wiki/Multicast_address

    In support of link-local multicasts which do not use IGMP, any IPv4 multicast address that falls within the *.0.0.0 / 24 and *.128.0.0 / 24 ranges will be broadcast to all ports on many Ethernet switches, even if IGMP snooping is enabled, so addresses within these ranges should be avoided on Ethernet networks where the functionality of IGMP ...

  8. List of TCP and UDP port numbers - Wikipedia

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

    X11—used between an X client and server over the network 6005 Unofficial: Default for BMC Software Control-M/Server—Socket used for communication between Control-M processes—though often changed during installation Unofficial: Default for Camfrog chat & cam client 6009: Unofficial: JD Edwards EnterpriseOne ERP system JDENet messaging ...

  9. Dynamic Host Configuration Protocol - Wikipedia

    en.wikipedia.org/wiki/Dynamic_Host_Configuration...

    The relay agent will use the 255.255.255.255 broadcast IP address (and the clients MAC address) to inform the client of the server's DHCPOFFER. The communication between the relay agent and the DHCP server typically uses both a source and destination UDP port of 67.