We recommended that you use Anti-DDoS Advanced to protect business IP addresses or domain names for website (layer-7) and non-website (layer-4) businesses in and outside Tencent Cloud.
By default, one Anti-DDoS Advanced instance supports a total of 60 forwarding rules for layer-4 access and layer-7 access. An Anti-DDoS Advanced instance supports 500 forwarding rules at most. For non-website (layer-4) protocols, each rule supports 20 source IP addresses or domain names. For website (layer-7) protocols, each rule supports 16 source IP addresses or domain names.
The total number of forwarding rules is the sum of forwarding rules for TCP/UDP and HTTP/HTTPS, and the maximum total number can be up to 500. For TCP and UDP, if the same forwarding port number is used, two different forwarding rules need to be configured.
At present, Anti-DDoS Advanced is available both in and outside Chinese Mainland. Specifically, it is supported in the following regions outside Chinese Mainland: Hong Kong (China), Taiwan (China), Singapore, Seoul, Tokyo, Virginia, Silicon Valley, and Frankfurt.