Network and Security

Private IP

In basic network mode, private IP addresses are uniformly allocated by the system. If you change the private IP internally within the operating system, it will cause an interruption in internal network communication. Communication traffic between hosts within the same data center via private IP is free of charge. Private IPs can be used for inter-communication between bare metal cloud host instances and also with other cloud services, such as Uhost, UDB, and UMem.

Additionally, UCloud Global supports private virtual IPs, which can be directly set on bare metal cloud hosts upon request.

Public IP

Public IP addresses are the primary means by which users access cloud hosts and provide services externally. In UCloud Global, a public IP can be elastically migrated, allowing easy migration to another host in case of host failure, i.e., “Elastic IP.” When you create a bare metal cloud host, if you choose to purchase both an Elastic IP and internet bandwidth, an Elastic IP will be allocated and bound to your bare metal cloud host. You can find this IP resource information in the data panel of network products.

Firewall

The firewall function is provided for bare metal cloud hosts by binding firewall rules to these hosts, thereby managing public access and providing necessary security protection. The firewall supports TCP/UDP/ICMP/GRE protocols. We have created several default firewalls for you, with TCP ports 22, 3389, and PING enabled by default. You can adjust them according to your business needs or create more firewall strategies.