Network and Security

Internal Network IP

In the basic network mode, internal network IP addresses are uniformly allocated by the system. If you manually change the internal network IP within the operating system, it will cause internal network communication to be interrupted. Communication traffic between hosts in the same data center via internal network IP is free of charge. The internal network IP can be used for internal network access between UPHost instances, as well as for internal network access between UPHost and other cloud services, such as Uhost, UDB, and UMem.

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

Public Network IP

Public network IP addresses are the primary means for users to access cloud hosts and for host instances to provide external services. In XXXCloud, public network IPs are elastically migratable. When a host fails, the public network IP can be easily migrated to another host, which is called an “Elastic IP (EIP).” When creating a UPHost, if you choose to purchase an Elastic IP and public network bandwidth quota simultaneously, an Elastic IP will be allocated and bound to your UPHost. You can view the information of this IP resource in the data panel of network products.

Firewall

The firewall function is provided for UPHost. By binding firewall rules to UPHost, you can control and manage public network access to the UPHost, providing necessary security guarantees for the host. The firewall supports TCP/UDP/ICMP/GRE protocols. We have created several default firewalls, which by default open TCP ports 22, 3389, and allow PING. You can adjust or create more firewall policies according to your business needs.