In this specific case, the DNS server does not contain the PTR record to resolve from 10.0.10.10 IP address to IMPSUB.edgrodrilab.com FQDN. To fix theDNS unreachablewarning and theReverse DNS lookup failederror, you need to create the requiredA...
observed when using UDP as a transport protocol. However, UDP utilizes ICMP as an error reporting protocol. When a UDP packet is sent to a port that is not listed at the destination, the destination will immediately respond with an ICMP "Destination Host Unreachable: Port Unreachable...
If your application is making use of UDP, then it will be difficult to find it this way. Instead, you will have to make use of ICMP as an error-reporting protocol. If you notice the message ICMP Destination hostunreachable: Port unreachablemessage immediately after the UDP packet, then the...
If thepingcommand is unsuccessful, the ICMP echo requests time out, and indicate that the destination host is unreachable. The example inFigure 5depicts the results of apingcommand that failed. Figure 5 - When the ping Command Fails Here, the PC is connected directly to the TCC card, and ...
PortQry received an Internet Control Message Protocol (ICMP)"Destination Unreachable - Port Unreachable" message back from the target UDP port. Or, if the target port is a TCP port, Portqry received a TCP acknowledgment packet with the Reset flag set. Filtered: The target port o...
PortQry received an Internet Control Message Protocol (ICMP)"Destination Unreachable - Port Unreachable" message back from the target UDP port. Or, if the target port is a TCP port, Portqry received a TCP acknowledgment packet with the Reset flag set. Filtered: The target port on the ...
1 157.54.48.1 reports: Destination net unreachable. Trace complete. TRACERT is useful for troubleshooting large networks where several paths can lead to the same point or where many intermediate components (routers or bridges) are involved.
PortQry received an Internet Control Message Protocol (ICMP)"Destination Unreachable - Port Unreachable" message back from the target UDP port. Or, if the target port is a TCP port, Portqry received a TCP acknowledgment packet with the Reset flag set. Filtered: The target port o...
Not Listening: No process is listening on the target port on the target system. PortQry received an Internet Control Message Protocol (ICMP)"Destination Unreachable - Port Unreachable" message back from the target UDP port. Or, if the target port is a TCP port, Portqry received ...
In the Input parameters section, for UnreachableInstanceId, enter the Amazon EC2 instance ID of the unreachable instance. (Optional) For LogDestination, enter the Amazon Simple Storage Service (Amazon S3) bucket name if you want to collect operating system logs for troubleshooting your Amazon EC2 ...