Issue: If your web server doesn’t support Server Name Indication (SNI), it may be unable to securely serve multiple subdomains on a single IP address, affecting security and user trust.
Fix: Verify that your server supports SNI to handle multiple SSL certificates on the same IP address. Be aware that very old browsers may not support SNI, so check your audience’s browser usage if necessary.
Recommendations
- Check Hosting Provider: Ensure your hosting provider or server configuration supports SNI to secure all subdomains with HTTPS.
- Upgrade Older Systems: If your server doesn’t support SNI, consider updating or migrating to a provider that does.
- Review Browser Compatibility: Check analytics to see if a significant portion of your audience uses outdated browsers; if so, consider alternative approaches.
- Test SSL Configuration: After enabling SNI, use SSL testing tools to ensure each subdomain is correctly served with its certificate.
Tip: SNI improves HTTPS compatibility across subdomains, enhancing site security and user confidence.