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1
Hello @riku
As I had already provided the route in the rounet table, and in Security group all the roles of ICMP are allowed,
1
Hello.
I don't know the details as only the IP address is listed, but does this mean that I can't ping the on-premises server from EC2 via Site to Site VPN?
If so, please check whether there is a route to the on-premises in the subnet route table.
Another possibility is that ICMP is not allowed by the firewall or security group.
0
Is routing configured from on-premises to VPC?
Also, is your on-premises router configured to deny ICMP?
Relevant content
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Is "172.2.0.4" an EC2 IP address? Please check not only the security group but also the firewall of the EC2 OS. We also recommend that you use the "tracert" command to check how far the communication is going.