# 1.1. Adding Anti-DDoS Protection (First Time Purchase)

Notes:

**1.** If the line type of the source station is inconsistent with the anti-DDoS line type, it may result in slower access.

**2.** No refunds are offered after successful purchasing of anti-DDoS protection. The product cannot be removed during its validity period. Please take special note!

**3.** Downgrades are not allowed for anti-DDoS. Therefore, if you choose a fixed 30G, you will not be able to switch to a flexible 20G halfway.

**4.** Auto-renewal is enabled by default. If you do not wish to auto-renew, please make sure to switch it off.

**5.** If the source station IP that needs protection has been banned, please purchase a new IP to replace the old one.

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- **Custom name:** Customize the name of the inland anti-DDoS, which can include Chinese and English characters, numbers, as well as - \_ . (up to 32 characters).

- **Line type:** Line type of the anti-DDoS data center. "North China, East China" refers to the location of the anti-DDoS data center, and "BGP" indicates that the data center is tri-line BGP.

- **Anti-DDoS data center:**

    - **Shijiazhuang:** CC protection is not supported, and up to 2 anti-DDoS IPs can be added to each package (2 for free, none for a fee).
    
    - **Zaozhuang, Yangzhou:** CC protection is supported, and up to 2 anti-DDoS IPs can be added to each package (2 for free, none for a fee).

- **Base value:** Basic protection peak value of the anti-DDoS data center. No additional charge will be levied for attacks within this range.

- **Elastic protection:** The maximum protection peak value. If the attack exceeds the base value, it will be charged daily. Users can set a maximum limit. When the maximum limit is exceeded, the protection will stop, and the anti-DDoS IP will be blocked.

- **Business bandwidth:** This refers to the bandwidth size from the anti-DDoS data center to the source station server. There will be no additional charge for anything under 50M.