ExtremeSwitching (EOS)

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switch extreme a4

  • 1.  switch extreme a4

    Posted 05-30-2017 17:47

    Good afternoon! I need to enable protection against smurf attacks on the A4 Access switch. How can I do this?


  • 2.  RE: switch extreme a4

    Posted 05-31-2017 16:49
    Try use that:
    set garga.mel enable port [/code]


  • 3.  RE: switch extreme a4

    Posted 06-01-2017 19:55
    User Guide:
    ip directed-broadcast
    Use this command to enable or disable IP directed broadcasts on an interface. By default,
    interfaces on the A4 do not forward directed broadcasts. The no form of this command disables IP
    directed broadcast on the interface.
    Syntax
    ip directed-broadcast
    no ip directed-broadcast
    Parameters
    None.
    Defaults
    None.
    Mode
    Interface configuration: A4(su)->router(Config-if(Vlan 1))#
    Usage
    Directed broadcast is an efficient mechanism for communicating with multiple hosts on a network
    while only transmitting a single datagram. A directed broadcast is a packet sent to all hosts on a
    specific network or subnet. The directed broadcast address includes the network or subnet fields,
    with the binary bits of the host portion of the address set to one. For example, for a network with
    the address 192.168.0.0/16, the directed broadcast address would be 192.168.255.255. For a subnet
    with the address 192.168.12.0/24, the directed broadcast address would be 192.168.12.255.
    In order to minimize broadcast DoS attacks, forwarding of directed broadcasts is disabled by
    default on the A4, as recommended by RFC 2644.
    If the ability to send directed broadcasts to a network is required, you should enable directed
    broadcasts only on the one interface that will be transmitting the datagrams. For example, if a A4
    has five routed interfaces for the 10, 20, 30, 40, and 50 networks, enabling directed broadcast only
    on the 30 network interface will allow anyone from any other networks (10, 20, 40, 50) to send
    directed broadcast to the 30 network.


  • 4.  RE: switch extreme a4

    Posted 05-31-2017 16:49
    :)


  • 5.  RE: switch extreme a4

    Posted 05-31-2017 16:49
    thank you.


  • 6.  RE: switch extreme a4

    Posted 06-01-2017 19:55
    Thank you. Problem solved.