Networks

Include security groups, IP subnets, and EIP.

Security Groups

Security Groups is a virtual packet filtering firewall that controls the access policies of associated servers by setting rules for the direction of entry and exit of the security group. E.g. control whether the server can be accessed by other networks, and the external resources that the server can access, etc.

IP Subnets

IP subnets are used to provide IP addresses for servers, hosts, and other resources.

EIP

Elastic IP is a type of NAT IP that enables communication between servers and the public network by binding to servers and NAT mapping the EIP to the private address of the servers.