Anti-DDoS:FAQ overview

Type

Question list

Pre-sales FAQ

• Does Alibaba Cloud Anti-DDoS provide free services?

• Do Anti-DDoS Pro and Anti-DDoS Premium support a service that is triggered and billed only during an attack, with no charges when there are no attacks?

• Does Alibaba Cloud Anti-DDoS support free trials?

• Can I use Anti-DDoS Pro and Anti-DDoS Premium for servers that are not deployed on Alibaba Cloud?

• If my server is not deployed on Alibaba Cloud but my domain name is, can I use Anti-DDoS Pro and Anti-DDoS Premium?

• Do I need to complete an ICP filing for my domain name to use Alibaba Cloud Anti-DDoS Pro and Anti-DDoS Premium?

• Which regions are supported by Anti-DDoS Pro and Anti-DDoS Premium?

• Is there a limit on the number of domain names that can be added to Anti-DDoS Pro and Anti-DDoS Premium?

• Does Anti-DDoS Pro and Anti-DDoS Premium support wildcard domain names?

• Are there any restrictions on the ports that can be added to Anti-DDoS Pro and Anti-DDoS Premium?

• Are there any requirements for using Anti-DDoS Pro and Anti-DDoS Premium (outside the Chinese mainland)?

• Does the minimum bandwidth commitment of Anti-DDoS Pro and Anti-DDoS Premium (the Chinese mainland) protect all traffic or only attack traffic?

Billing FAQ for burstable protection of Anti-DDoS Pro and Anti-DDoS Premium (the Chinese mainland)

• If I enable burstable protection but there are no attacks for a month, will I be charged burstable protection fees?

• I purchased 20 Gbps of basic protection bandwidth and 50 Gbps of burstable protection bandwidth. What is my total mitigation capability?

• What happens if the attack traffic exceeds the burstable protection bandwidth limit?

• My basic protection bandwidth is 30 Gbps and my burstable protection bandwidth is 50 Gbps. If the actual inbound traffic is only 45 Gbps, how am I charged?

• My current burstable protection bandwidth is 100 Gbps. If this is insufficient, can I increase it to 200 Gbps?

• I have an Anti-DDoS Pro and Anti-DDoS Premium (the Chinese mainland) instance with 30 Gbps of basic protection bandwidth. If this is insufficient, can I upgrade to a higher mitigation capability at any time?

• If an IP address is attacked multiple times in one day, how are the fees calculated?

• I purchased an Anti-DDoS Pro and Anti-DDoS Premium (the Chinese mainland) instance. How can I stop using burstable protection to avoid pay-as-you-go burstable protection fees?

Anti-DDoS Pro and Anti-DDoS Premium FAQ

• Product billing and specifications

  • What happens after my Anti-DDoS Pro or Anti-DDoS Premium instance expires?

  • What are the limits on the number of protected ports and domain names for Anti-DDoS Pro and Anti-DDoS Premium?

• Integration and configuration

  • How do I find the back-to-origin IP addresses for Anti-DDoS Pro and Anti-DDoS Premium? Do I need to add them to a whitelist manually?

  • Can I use a private IP address as an origin IP address? Is there a delay when I modify an origin IP address?

  • How do Anti-DDoS Pro and Anti-DDoS Premium handle load balancing, health checks, and session persistence?

  • Can I use Anti-DDoS Pro or Anti-DDoS Premium with CDN or DCDN? How do I configure them?

• Features and protocol support

  • What common protocols do Anti-DDoS Pro and Anti-DDoS Premium support?

  • What is the default connection timeout for Anti-DDoS Pro and Anti-DDoS Premium?

  • How do Anti-DDoS Pro and Anti-DDoS Premium support HTTPS?

• Protection and security mechanisms

  • What is clean bandwidth, and what happens if the limit is exceeded?

  • How do I handle blackhole filtering? Can I manually deactivate blackhole filtering for an Anti-DDoS Pro or Anti-DDoS Premium instance?

  • Why does the Security Overview page show scrubbed traffic even when the traffic scrubbing threshold is not reached?

  • Do Anti-DDoS Pro and Anti-DDoS Premium support blocking access from IP addresses outside the Chinese mainland?

  • Is it safe to upload an HTTPS certificate and private key? Do Anti-DDoS Pro and Anti-DDoS Premium decrypt and log the content of HTTPS requests?

  • Do the open ports on the Anti-DDoS Pro and Anti-DDoS Premium clusters pose a security risk?

Hot topics for Anti-DDoS Pro and Anti-DDoS Premium

Configuration

• WebSocket configuration for Anti-DDoS Pro and Anti-DDoS Premium

• Active probe IP addresses for health checks in Anti-DDoS Pro and Anti-DDoS Premium

Mitigation Analysis

• How to determine the type of attack on an Anti-DDoS Pro or Anti-DDoS Premium instance

• How to prevent or avoid DDoS attacks on NTP services

• What is the difference between website protection and non-website protection?