Add a prefix

To add a prefix to Advanced TCP Protection:

1. Log in to the Cloudflare dashboard Open external link and select your account.

2. Go to Account Home > L3/4 DDoS > Advanced TCP Protection.

3. Under General settings > Prefixes, select Edit.

4. Expand the Add existing prefix section and select Add next to the prefix you wish to add.
   Alternatively, enter a prefix and (optionally) a description in Prefix and Description, respectively, and select Add.