# Change History

Release Date | What's New
--- | ---

2022-06-25

Added the following content:

- Modified constraints on EIPs dedicated for dedicated load balancers in Assigning an EIP and Binding It to an ECS (Assigning an EIP and Binding It to an ECS).
- Modified constraints on EIP binding to load balancers in Unbinding an EIP from an ECS and Releasing the EIP (Unbinding an EIP from an ECS and Releasing the EIP).

2022-02-15

Added the following content:

- Added constraints on EIPs dedicated for dedicated load balancers in Assigning an EIP and Binding It to an ECS (Assigning an EIP and Binding It to an ECS).
- Added description about the default reverse domain name of an EIP in Step 3: Assign an EIP and Bind It to an ECS and Assigning an EIP and Binding It to an ECS.
- Added constraints on EIPs dedicated for dedicated load balancers in Assigning an EIP and Binding It to an ECS (Assigning an EIP and Binding It to an ECS) and Adding EIPs to a Shared Bandwidth (Adding EIPs to a Shared Bandwidth).

2021-12-15

Modified the following content:

- Added description about how to switch between the old and new console editions in Document Usage Instructions.
- Added Operation Guide (New Console Edition) and Operation Guide (Old Console Edition).

2021-08-25 | Modified the following content: Deleted the content related to the IP address group.

2021-06-18

Modified the following content:

- Updated screenshots and deleted the Bandwidth Type parameter in Step 3: Assign an EIP and Bind It to an ECS and Assigning an EIP and Binding It to an ECS (Assigning an EIP and Binding It to an ECS).
- Updated screenshots in Assigning a Shared Bandwidth (Assigning a Shared Bandwidth) and Modifying a Shared Bandwidth (Modifying a Shared Bandwidth).

2020-02-25

Added the following content:

- Added section Shared Bandwidth.

Modified the following content:

- Modified the steps in section EIP.

2020-02-12 | Added the following content: Added description that VPC flow logs support S2 ECSs in section VPC Flow Log.

2020-01-08

Added the following content:

- Added function and namespace description and optimized information in tables in Supported Metrics.
- Added section Region and AZ.
- Added the example of allowing external access to a specified port in the section Security Group Configuration Examples.

Modified the following content:

- Added Subnet and VPC as the type of resources whose traffic is to be logged in VPC Flow Log.

- Updated screenshots in Adding a Security Group Rule and Fast-Adding Security Group Rules.
- Optimized figure examples in this document.
- Optimized descriptions in section Firewall Configuration Examples.
- Optimized descriptions in section Default Firewall Rules.
- Changed the position of section Security.
- Optimized What Is a Quota?.

Deleted the following content:

- Deleted section "Deleting a VPN".

2019-09-10

Added the following content:

- Added section VPC Flow Log.

Deleted the following content:

- Deleted the concepts of VPN, IPsec VPN, remote gateway, remote subnet, region, and project in section Basic Concepts.
- Deleted the FAQs related to VPN in section FAQs.

- Deleted the content related to "Configuring a VPC for ECSs That Access the Internet Through a VPN" in section Getting Started.

Modified the following content:

- Optimized section Service Overview and added the product advantage description to section What Is Virtual Private Cloud?.
- Added section Security Group Configuration Examples. The security group configuration examples are integrated into one section and the original independent sections are deleted.
- Modified the description about how to switch to the EIPs page in section EIP.

2019-02-23

Added the following content:

- Added the description about batch subnet creation in section VPC and Subnet.
- Added precautions about disabling a firewall in section Enabling or Disabling a Firewall.

2019-02-22

Added the following content:

- Added the Assign EIP screenshot in section Assigning an EIP and Binding It to an ECS.

2019-02-15

Added the following content:

- Added the Anti-DDoS service restriction in section How Does an IPv6 Client on the Internet Access the ECS That Has an EIP Bound in a VPC?.
- Added section Modifying a Security Group.

2019-02-11

Deleted the following content:

- Deleted the console screenshot from section Assigning an EIP and Binding It to an ECS.

2019-01-31 | Accepted in OTC-4.0.

2019-01-30

Modified the following content:

- Modified the table listing the parameters for creating a VPC in section VPC and Subnet.
- Modified the table listing the parameters for modifying a security group rule in Adding a Security Group Rule.
- Added the link to the default security group rule introduction in section Adding a Security Group Rule.
- Modified the format of the exported file to Excel in sections Exporting VPC List and Importing and Exporting Security Group Rules.
- Changed the number of characters allowed for the Description field to 255 in section Creating a Firewall.
- Modified the steps in section Managing EIP Tags.
- Added the Monitoring Period column to the table listing metrics in section Supported Metrics.
- Changed the maximum bandwidth size allowed to 1000 Mbit/s in section What Is the Bandwidth Size Range?.
- Modified the table listing subnet parameters in section Modifying a Subnet.
- Updated the security group description in section Security Group.
- Updated the VPC peering connection description in section VPC Peering Connection.
- Updated the firewall description in section Firewall.
- Updated the console screenshots in section Adding a Firewall Rule.
- Updated the console screenshots in section Modifying a Firewall Rule.

Added the following content:

- Added section Security Group Configuration Examples.
- Added section Route Table Overview.
- Added section Modifying an EIP Bandwidth.
- Added description about disassociating and releasing multiple EIPs at a time in section Unbinding an EIP from an ECS and Releasing the EIP.

Deleted the following content:

- Deleted description about the transitive peering relationships from section Are There Any Constraints on Using VPC Peering Connections?.
- Deleted section Viewing Routes Configured for a VPC Peering Connection in the VPC Peering Route Table.
- Deleted section Deleting a Route from the VPC Peering Route Table.
- Deleted description about the Reject action from section Adding a Firewall Rule.

2018-12-30

Modified the following content:

- Modified the description about how to switch to the security group and firewall pages based on the changes made on the management console.

Added the following content:

- Added section Firewall Overview.
- Added section Firewall Configuration Examples.

2018-11-30

Added the following content:

- Added parameter NTP Server Address to the description about how to create a subnet.

Modified the following content:

- Updated the document based on changes made to the firewall console pages.
  - Added description about how to delete multiple firewall rules at a time and how to disassociate multiple subnets from a firewall at a time.
  - Changed parameter Any to All.

2018-09-18 | Accepted in OTC-3.2/AGile-09.2018.

2018-09-06

Modified the following content:

- Modified the content and changed some screenshots in the document based on the latest management console.

2018-08-30

This release incorporates the following change:

- Added section Adding Instances to and Removing Them from a Security Group.

2018-07-30

This release incorporates the following changes:

- Optimized the sections related to security groups:
  - Added section Replicating a Security Group Rule.
  - Added section Modifying a Security Group Rule.
  - Modified section Deleting a Security Group Rule and added description about how to delete multiple security group rules at a time.
  - Added section Importing and Exporting Security Group Rules.
- Modified the VPN sections. The details are as follows:
  - Modified the step for switching to the VPN console.
  - Deleted sections related to VPNs. An independent VPN user guide will be provided.
  - Deleted section VPN Best Practice.

2018-06-30

This release incorporates the following changes:

- Optimized sections under Product Introduction.
- Optimized sections under Security Group.
  - Optimized section Security Group Overview.
  - Optimized section Default Security Groups and Security Group Rules.
  - Optimized section Creating a Security Group.
  - Optimized section Adding a Security Group Rule.
  - Optimized section Fast-Adding Security Group Rules.
  - Added security group configuration examples.
  - Added section Viewing the Security Group of an ECS.
  - Added section Changing the Security Group of an ECS.
- Categorized FAQs.

2018-06-11

This release incorporates the following changes:

- Added section Monitoring.
- Modified tag description.

2018-05-23 | Accepted in OTC 3.1.

2018-04-28

This release incorporates the following changes:

- Added description about VPN tagging.
- Added the IPv6 address description.
- Added section Exporting VPC Information.
- Modified the bandwidth range.
- Modified the VPN modification snapshot.

2018-03-30 | This release incorporates the following change: Deleted the IPv6 address description.
2018-02-28 | This release incorporates the following change: Added the description that the security group description can contain a maximum of 128 characters.

2018-01-30

This release incorporates the following changes:

- Added description about the function of unbinding and releasing EIPs in batches.
- Added description about the function that the negotiation mode of the IKE policy in the VPN can be configured.
- Added the description that the security group description can contain a maximum of 64 characters.

2017-11-30

This release incorporates the following changes:

- Updated screenshots and steps based on the latest management console pages.
- Added description to indicate that subnets can be created without specifying the AZ.

2017-10-30

This release incorporates the following changes:

- Added description about the fast security group rule adding function.
- Added ECS security group configuration examples.

2017-09-30

This release incorporates the following changes:

- Added description to indicate that the peer project ID needs to be configured when a tenant creates a VPC peering connection with the VPC of another tenant.
- Modified description in sections Adding a Security Group Rule and Deleting a Security Group Rule based on changes made to the network console.

2017-08-30

This release incorporates the following changes:

- Added section Managing Subnet Tags.
- Added description about the VPC, subnet, and EIP tags.
- Added section Security Group Overview.

2017-07-30

This release incorporates the following changes:

- Added description about how to enable shared SNAT on the management console.
- Added section Managing VPC Tags.
- Added section Managing EIP Tags.
- Changed the number of routes allowed in a route table by default to 100.
- Updated procedures in sections VPC and Subnet and Custom Route based on changes made to the network console.
- Added description about the multi-project feature.

2017-06-30

This release incorporates the following change:

- Added description about the virtual IP address feature.

2017-05-30

This release incorporates the following change:

- Added FAQ How Does an IPv6 Client on the Internet Access the ECS That Has an EIP Bound in a VPC.

2017-04-28

This release incorporates the following change:

- Added description about how to add DNS server addresses during subnet information modification.

2017-03-30

This release incorporates the following changes:

- Added description about the firewall function.
- Added description about the shared SNAT function.

2017-02-28

This release incorporates the following change:

- Deleted description about the button for disabling the DHCP function.

2017-02-24

This release incorporates the following change:

- Added description about the VPC peering function.

2017-01-12

This release incorporates the following change:

- Added description about the custom route table function.

2016-10-19

This release incorporates the following change:

- Updated the Help Center URL of the VPN service.

2016-07-15

This release incorporates the following changes:

- Modified the VPN authentication algorithm.
- Optimized the traffic metering function.

2016-03-14 | This issue is the first official release.