If you did not purchase the public IP when purchasing the CVM or have returned the public IP, you can apply for an EIP on the EIP Console and bind it to your CVM to allow public network access.
You can change the public IP of your CVM. For more information on specific operations, please see Changing Instance Public IP.
If you need to retain a specific public IP under your account, you can convert it to an EIP, which can be bound to the device and used to access the public network. This EIP will be retained under your account until you release it.
For more information on the related operations, see EIP.
A public IP address is an unreserved IP address on the Internet. A CVM with a public IP address can be accessible to and by other computers on the Internet.
For more information, see Internet Access.
For details, see Getting Public IP Addresses.
For details, see Changing Instance Public IP.
Public gateways enable the public network traffic forwarding feature in the image. However, CVMs with public IP addresses do not have this feature by default. Therefore, CVMs created on Windows public image cannot function as public gateways because the Windows image has no traffic forwarding feature.
Possible reasons include:
A private IP address cannot be accessed through the Internet. That is how Tencent Cloud provides private network services.
For more information, please see Private Network Access.
For details, see Getting Private IP Addresses and Setting DNS.
Yes, you can change the private IP of an instance. For operations, see Modifying Private IP Addresses