TLS Compatibility

All Nine managed services support TLS 1.2 and TLS 1.3 by default.

If you require a TLS 1.3-only configuration, contact to disable TLS 1.2.

Test Your Configuration

Use the SSL Labs Server Test to analyze your domain's TLS configuration. The scan may flag certain ciphers as weak. Our base configuration is regularly checked for vulnerabilities. It deliberately includes certain weaker ciphers to ensure compatibility with as many clients as possible. For details, see the security scans article.

Alternatively, test from the command line:

openssl s_client -connect example.com:443 -tls1_3

Client Compatibility

TLS 1.2 and 1.3 are supported by all modern browsers and operating systems. For detailed compatibility information, see the TLS browser support tables on caniuse.