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tutik 11-15-2006 07:32 AM

can not perform PING
 
Hello,
Can not ping DNS server (of another Autonomous System) although it is in my routing table (Cisco 3800). Server is located after six AS's. Under GRX (GPRS Routing Exchange) that operates this DNS server locates also other servers that are pingable and also are in routing table.
Thanx

mak007 11-15-2006 11:13 AM

it is very common for organizations/providers to block ping (icmp) to certain servers to avoid DoS attacks.

Have you tried to ping the same server/ip address from another network?

tutik 11-15-2006 12:08 PM

Yes, I have tried to ping from another network and result is the same.

Maybe, You are right about ICMP-request blocking. Thanks


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