Vyatta NOS documentation

Learn how to install, configure, and operate Vyatta Network Operating System (Vyatta NOS), which helps to drive our virtual networking and physical platforms portfolio.

security firewall broadcast-ping <state>

Enables or disables response to broadcast ICMP echo request and time-stamp request messages.

set security firewall broadcast-ping { disable | enable }
delete security firewall broadcast-ping [ disable | enable ]
show security firewall broadcast-ping

ICMP echo and time-stamp request messages do not receive responses.

disable
Disables responses to broadcast ICMP echo and time-stamp request messages.
enable
Enables responses to broadcast ICMP echo and time-stamp request messages.

Configuration mode


security {
    firewall {
        broadcast-ping 
            disable
            enable
    }
}

Use this command to specify whether the system responds to broadcast ICMP echo request and broadcast ICMP time-stamp request messages.

Pings are a network tool that help establish the reachability of a device from the local system. Pings, particularly broadcast pings, are often disallowed because they are a potential means for denial of service (DoS) attacks. Time-stamp requests are used to query another device for the current date and time. Time-stamp requests are also often disallowed both because they are a potential means for a DoS attack and because the query allows an attacker to learn the date set on the queried machine.

Use the set form of this command to specify whether the system responds to broadcast ICMP ICMP echo and time-stamp request messages.

Use the delete form of this command to restore the default behavior of not responding to broadcast ICMP ICMP echo and time-stamp request messages.

Use the show form of this command to display the behavior to broadcast ICMP ICMP echo and time-stamp request messages.