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A Client Cannot Ping the Private IP Address of an ECS Symptom A client is connected to a P2C VPN gateway, but cannot ping the private IP address of an ECS. Possible Causes Ping detection is disabled on the client device or ECS. Ping detection packets are denied by a security group
Do I Need Two VPN Connections to Connect Four Subnets of Two Regions If Each Region Has Two Subnets? No. Only one VPN connection is required between two regions. The subnets can all be added to the VPN connection. In this scenario, if you attempt to create a second VPN connection,
Do I Need Two VPN Connections to Connect Four Subnets of Two Regions If Each Region Has Two Subnets? No. Only one VPN connection is required between two regions. The subnets can all be added to the VPN connection. In this scenario, if you attempt to create a second VPN connection,
What Should I Do If I Cannot Access the ECSs on the Cloud from My On-premises Data Center or LAN After the VPN Connection Has Been Set Up? The security group denies access from all sources by default. If you want to access your ECSs, modify the security group rules and allow the access
What Should I Do If I Cannot Access the ECSs on the Cloud from My On-premises Data Center or LAN After the VPN Connection Has Been Set Up? The security group denies access from all sources by default. If you want to access your ECSs, configure security group rules to permit access
What Should I Do If I Cannot Create Connections for a VPN Gateway That Has No Bandwidth Information? If a VPN gateway has no bandwidth information, the VPN is of the earlier edition. This type of VPN cannot be created on the cloud anymore. Only one VPN connection can be created for
What Should I Do If I Cannot Create Connections for a VPN Gateway That Has No Bandwidth Information? If a VPN gateway has no bandwidth information, the VPN is of the earlier edition. This type of VPN cannot be created on the cloud anymore. Only one VPN connection can be created for
Do I Need to Add a Route for an ECS with Multiple NICs to Reach the On-premises Network? If a primary NIC is used to establish a VPN with the on-premises network, no route needs to be added. If a non-primary NIC is used to establish a VPN with the on-premises network, add a route
Do I Need to Add a Route for an ECS with Multiple NICs to Reach the On-premises Network? If the primary network interface card (NIC) is used to establish a VPN connection with the on-premises network, no route needs to be added. If a non-primary NIC is used to establish a VPN connection
How Do I Access ECSs at Home When My Enterprise Network Has Been Connected to the Cloud Through a VPN? A VPN is an IPsec VPN that connects a VPC on the cloud and an on-premises local area network (LAN). The home network is not a part of the LAN of your enterprise and cannot be directly
How Do I Access ECSs at Home When My Enterprise Network Has Been Connected to the Cloud Through a VPN? A VPN is an IPsec VPN that connects an on-premises LAN to a VPC on the cloud. Your home network is not a part of your enterprise LAN, so you cannot directly connect to the VPC on
Do I Need to Install IPsec Software on Each Server That Needs to Access an ECS to Establish a VPN Connection? No. VPN connects two LANs. Multiple servers in the on-premises data center use the same public IP address to access the cloud. If you install IPsec software on the on-premises
Why Does an ECS Have EIP Access Information After I Enable a VPN? This occurs because the ECS has an EIP bound before the VPN is used. That is, you can access the ECS through the VPN or the EIP. After the VPN is established, traffic from servers meeting ACL rules can enter the tunnel
Why Does an ECS Have EIP Access Information After I Enable a VPN? A possible cause is that the ECS has an EIP bound before the VPN is used. In this scenario, you can access the ECS through both the VPN and the EIP. To allow only hosts on the VPN to access the ECS, unbind the EIP from
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When you configure a VPN, perform the following operations on the on-premises gateway: Configure IKE and IPsec policies. Specify interesting traffic (ACL rules). Check
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When you configure a VPN, perform the following operations on the on-premises gateway: Configure IKE and IPsec policies. Specify the to-be-protected traffic (ACL rules)
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When configuring a VPN, you need to perform the following operations on the gateway in your on-premises data center: Configure IKE and IPsec policies. Set the connection
What Are the Impacts of a VPN on an On-premises Network? What Are the Changes to the Route for Accessing an ECS? When configuring a VPN, you need to perform the following operations on the gateway in your on-premises data center: Configure IKE and IPsec policies. Configure a VPN connection
