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How Many Bits Do the DH Groups Used by VPN Have? Diffie-Hellman (DH) groups determine the strength of the key used in the key exchange process. Higher DH group numbers are usually more secure, but more time is required to calculate the key.
How Do I Allow Specific Servers to Access a VPC Subnet Through a Created VPN Connection? Configurations in the on-premises data center Configure deny rules on VPN devices. Configure ACL rules on the router or switch.
Uploading a Certificate for a Customer Gateway Scenario For a customer gateway that uses SM series cryptographic algorithms, you need to upload a CA certificate for it to establish VPN connections with a VPN gateway. Procedure Log in to the management console.
After the new VPN connection is created, delete the original VPN connection and change the remote gateway and remote subnets of the new VPN connection to the recorded information. Trigger the negotiation again.
Parent topic: VPN Interesting Traffic
Can the Specification of a VPN Gateway Be Changed (for Example, from Professional 1 to Professional 2)? The specification of a VPN gateway can be changed between Basic and Professional 1.
How Do I Allow Specific Hosts to Access a VPC Subnet Through a Created VPN Connection?
How Do I Determine that a VPN Cannot Be Created in My Account Due to Insufficient Permissions? If the system displays a message indicating that you do not have the permissions to create a VPN gateway or VPN connection, add the required permissions.
Parent topic: P2C VPN Server Management
What Do I Do If a VPN Connection Is Interrupted and a Message Is Displayed Indicating That the DPD Times Out? This happens because there is no data exchange over the VPN connection.
General Consulting What Are the Typical Scenarios of IPsec VPN? What Are a VPC, a VPN Gateway, and a VPN Connection? What Are the Relationships Between a VPC, a VPN Gateway, and a VPN Connection? What Is a VPN Connection?
This eliminates the need to configure VPN connections between every two sites. A VPN gateway provides two IP addresses to establish dual independent VPN connections with each customer gateway.
Parent topic: P2C VPN Server Management
Can I Visit Websites Across International Borders Using a VPN? What Is a VPN Connection? How Do I Set the Number of VPN Connections When Buying a VPN Gateway? Will I Be Notified If a VPN Connection Is Interrupted?
Why Is the VPN Connection Always in the Not Connected State Even After Its Configuration Is Complete? Can a VPN Gateway IP Address Be Retained After the VPN Gateway Is Deleted? Do I Need to Create a VPN Gateway or a VPN Connection for Creating a VPN?
Operations on the Console What Are the Relationships Between a VPC, a VPN Gateway, and a VPN Connection? How Long Does It Take for Delivered VPN Configurations to Take Effect? Why Is a VPN Connection Always in Not Connected State After Its Configuration Is Complete?
Parent topic: VPN Negotiation and Interconnection
How Do I Access ECSs at Home When My Enterprise Network Has Been Connected to the Cloud Through a VPN? How Do I Establish a VPN Connection Temporarily If No IPsec-Capable On-Premises Device Is Available After I Purchase a VPN Gateway and VPN Connection?
In the navigation pane on the left, choose Virtual Private Network > Enterprise – VPN Gateways. Click the P2C VPN Gateways tab. In the P2C VPN gateway list, locate the target P2C VPN gateway, and click View Server in the Operation column.
Parent topic: FAQs - S2C Classic VPN
