DCDN provides access control features, including hotlink protection, URL signing, remote authentication, IP blacklists and whitelists, and User-Agent blacklists and whitelists to identify and filter visitors and protect your resources.
The following table describes the access control features available for your domain names.
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Feature |
Description |
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Configure a Referer blacklist or whitelist to identify and filter visitors based on request source domains. This prevents other websites from hotlinking to your content. |
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URL signing adds authentication to URLs. DCDN validates the encrypted string and timestamp in a signed URL to protect resources from unauthorized downloads. More secure than hotlink protection, URL signing is ideal for files that require a high level of security. |
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If you have your own authentication server, you can configure remote authentication to forward user requests to your server for validation. |
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Configure an IP blacklist and whitelist based on request source IP addresses to restrict access and prevent malicious activities such as IP address abuse and attacks. |
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A User-Agent identifies the client that sends a request. Configure a User-Agent blacklist and whitelist to ensure that your resources are accessed only from allowed clients. |