What Are VPN Negotiation Parameters? What Are Their Default Values?
Policy |
Parameter |
Value |
---|---|---|
IKE |
Authentication Algorithm |
|
Encryption Algorithm |
|
|
DH Algorithm |
NOTE:
In some regions, only Group 14, Group 2, and Group 5 are available. |
|
Version |
|
|
Lifecycle (s) |
86400 (default) Unit: second Value range: 60 to 604800 |
|
IPsec |
Authentication Algorithm |
|
Encryption Algorithm |
|
|
PFS |
NOTE:
In some regions, only DH group 14, DH group 2, and DH group 5 are available. |
|
Transfer Protocol |
|
|
Lifecycle (s) |
3600 (default) Unit: second Value range: 480 to 604800 |
- Perfect Forward Secrecy (PFS) is a security feature.
IKE negotiation has two phases, phase one and phase two. The key of phase two (IPsec SA) is derived from the key generated in phase one. Once the key in phase one is disclosed, the security of the IPsec VPN may be adversely affected. To improve the key security, IKE provides PFS. After PFS is configured, an additional DH exchange will be performed during IPsec SA negotiation, and a new IPsec SA key will be generated, improving IPsec SA security.
- To ensure security, PFS is enabled on Huawei Cloud by default. Ensure that PFS is also enabled on the on-premises gateway. Otherwise, the negotiation will fail.
- To enable PFS, ensure that the configurations at both ends of a VPN are the same.
- The traffic-based lifetime of IPsec SA on the Huawei Cloud VPN is default to 1,843,200 KB and cannot be changed. This lifetime does not affect the establishment of an IPsec SA.
Product Consultation FAQs
- 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? How Do I Set the Number of VPN Connections When Buying a VPN Gateway?
- What Is a Remote Gateway and Remote Subnet in a VPN Connection?
- How Do I Plan the CIDR Block of a VPC Accessed over a VPN Connection?
- Will an IPsec VPN Connection Be Established Automatically?
- What Are VPN Negotiation Parameters? What Are Their Default Values?
- What Devices Can Be Connected to Huawei Cloud Through a VPN?
- Are a Username and Password Required for Creating an IPsec VPN Connection?
- How Do I Allow Specific Servers to Access a VPC Subnet Through a Created VPN Connection?
- Which VPN Resources Can Be Monitored?
- Can an EIP Be Used as a VPN Gateway IP Address?
- Do I Need to Purchase EIPs for Servers That Communicate with Each Other Through a VPN?
- Are SSL VPNs Supported?
- How Long Does It Take for Delivered VPN Configurations to Take Effect?
- What Should I Do If I Cannot Create Connections for a VPN Gateway That Has No Bandwidth Information?
- Does Huawei Cloud VPN Support IPv6 Addresses?
- How Do I Determine My VPN Bandwidth Size?
- Does a VPN Connection Support Chinese Encryption Algorithms?
- Which IKE Version Should I Select When I Create a VPN Connection?
- What Are the Bits of the DH Groups Used by Huawei Cloud VPN?
- Can I Visit Websites Across International Borders Using a VPN?
- Can I Deploy Applications on the Cloud, Databases in an On-premises Data Center, and Then Connect Them Through a VPN?
- What Are the Differences Between the Application Scenarios and Connection Modes of IPsec and SSL VPNs?
- What Will I Be Charged for Creating a VPN? Will I Be Charged for VPN Gateway IP Addresses?
- What Is the Difference Between Billing a VPN Gateway by Bandwidth and by Traffic?
- Can a VPN Billed by Traffic Use a Shared Data Package?
- Can a VPN Gateway IP Address Be Retained After the VPN Gateway Is Deleted?
- Do I Need to Purchase EIPs for Servers That Communicate with Each Other Through a VPN?
- Where Can I Add Routes on the VPN Console to Reach the Remote Subnets?
- Will I Be Notified If a VPN Connection Is Interrupted?
- What Can I Do If VPN Connection Setup Fails?
- Which Direction of the Bandwidth Is Limited and What Is the Unit of the Bandwidth?
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