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What Can I Do If the Message "Illegal server address" Is Displayed When I Add a Domain Name?
Updated on 2023-10-26 GMT+08:00
What Can I Do If the Message "Illegal server address" Is Displayed When I Add a Domain Name?
Symptom
When a user adds a domain name to be protected, the system displays a message indicating that the origin server address is invalid.
Possible Causes
- Server Address is set to a private IP address reserved for internal use.
- The protected object and origin server addresses are set to the same IP address.
Handling Suggestions
Set Server Address to the actual origin server IP address (public IP address) or an independent back-to-source domain name, which cannot be the same as the protected domain name.
Parent topic: Domain Name and Port Configuration
Domain Name and Port Configuration FAQs
- How Do I Add a Domain Name/IP Address to WAF?
- Which Non-Standard Ports Does WAF Support?
- How Do I Use a Dedicated WAF Instance to Protect Non-Standard Ports That Are Not Supported by the Dedicated Instance?
- How Do I Configure Domain Names to Be Protected When Adding Domain Names?
- Do I Have to Configure the Same Port as That of the Origin Server When Adding a Website to WAF?
- How Do I Configure Non-standard Ports When Adding a Protected Domain Name?
- What Can I Do If One of Ports on an Origin Server Does Not Require WAF Protection?
- What Data Is Required for Connecting a Domain Name/IP Address to WAF?
- How Do I Safely Delete a Protected Domain Name?
- How Long Will CNAME Records Be Retained After I Delete a Domain Name from WAF?
- Can I Change the Domain Name That Has Been Added to WAF?
- What Are the Precautions for Configuring Multiple Server Addresses for Backend Servers?
- Does WAF Support Wildcard Domain Names?
- Does WAF Protect Chinese Domain Names?
- How Do I Route Website Traffic to My Cloud WAF Instance?
- What Can I Do If the Message "Illegal server address" Is Displayed When I Add a Domain Name?
- Why Am I Seeing That My Domain Quota Is Insufficient When There Is Still Remaining Quota?
- Can I Configure Multiple Load Balancers for a Dedicated WAF Instance?
- Why Am I Seeing the "Someone else has already added this domain name. Please confirm that the domain name belongs to you" Error Message?
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