Help Center> Virtual Private Network> FAQs> Classic VPN> Connection or Ping Failure> What Do I Do If a VPN Connection In Use Is Interrupted and a Message Is Displayed Indicating That Traffic from IP Addresses Not Whitelisted Generates?
Updated on 2023-06-16 GMT+08:00

What Do I Do If a VPN Connection In Use Is Interrupted and a Message Is Displayed Indicating That Traffic from IP Addresses Not Whitelisted Generates?

This is usually caused by ACL mismatch between the local and remote gateways.

  1. Check whether the local and remote subnets of the VPN connection are matched pairs. Ensure that ACL rules at both ends of the VPN connection do not conflict each other.
  2. Use the subnet/mask format when you configure interesting traffic in your on-premises data center. Do not use the address object mode since it may cause incompatibility issues.

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