large organization nameservers sending icmp packets to dns servers.

Drew Weaver drew.weaver at
Mon Aug 6 15:53:15 UTC 2007

        Is it a fairly normal practice for large companies such as Yahoo! And Mozilla to send icmp/ping packets to DNS servers? If so, why? And a related question would be from a service provider standpoint is there any reason to deny ICMP/PING packets to name servers within your organization?


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