Help Center/ Virtual Private Network/ User Guide (Ally Region)/ FAQs/ FAQs - S2C Enterprise Edition VPN/ Connection or Ping Failure/ Why Cannot ECSs at the Two Ends of a Normal Cross-Region VPN Connection Ping Each Other?

Updated on 2025-12-18 GMT+08:00

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Why Cannot ECSs at the Two Ends of a Normal Cross-Region VPN Connection Ping Each Other?

By default, a security group permits outbound traffic with any port number. To allow inbound traffic, add inbound rules to the security group. Ensure that the security group associated with the ECS that needs to receive ping packets allows inbound ICMP requests.

Parent topic: Connection or Ping Failure

Previous topic: Is an IPsec VPN Connection Automatically Established?

Next topic: Why Cannot Subnets at the Two Ends of a Normal VPN Connection Access Each Other?

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