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ICMP No Response Found

asked 2023-02-06 03:26:53 +0000

AdminIT gravatar image

Issue: Client issued icmp ping request, server side seem like received the packet and response back client but at client side was shown no response found.

I have attached the print screen, please advise what may goes wrong on this issue. Thanks!

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Due to I do not have sufficient points, I have uploaded logs to sharepoint. Link: https://risensolarmalaysia-my.sharepo...

AdminIT gravatar imageAdminIT ( 2023-02-06 04:06:31 +0000 )edit

The pcap shows the server sent a reply. To isolate where the reply is being dropped, you'll need additional packet captures in the path from the server to the client.

BigFatCat gravatar imageBigFatCat ( 2023-02-06 08:10:29 +0000 )edit

The client machine responded with an ICMP error packet, "Protocol unreachable". Maybe there is a firewall on the client that is blocking ICMP packets? If not, then something else on the client machine appears to be misconfigured as "Protocol unreachable" implies that the packet was delivered to the destination host, but the transport layer protocol was not available on that host.

cmaynard gravatar imagecmaynard ( 2023-02-06 16:14:33 +0000 )edit

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answered 2023-02-06 16:54:13 +0000

SYN-bit gravatar image

The fact that the "Protocol Unrechable" message comes back proves that the response does get back to the Client.

Looks like the OS of the client is not aware of the sending of the ICMP packet. Was the ICMP REQUEST packet generated by the ping command? Or by another program that is able to generate packets at a lower level?

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The ICMP REQUEST packet is not generate by the ping command, it is generated by an application which use for upload data to MySQL server. Thanks for your reply, it provides me the next step, I will run ping command parallelly for further confirmation.

AdminIT gravatar imageAdminIT ( 2023-02-07 00:20:07 +0000 )edit

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Asked: 2023-02-06 03:26:53 +0000

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Last updated: Feb 06 '23