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# SSLConfig

Use these constants to configure Transport Layer Security (TLS) sessions.

## Topics

### Constants

[`let kSSLSessionConfig_3DES_fallback: CFString`](/documentation/Security/kSSLSessionConfig_3DES_fallback)

[`let kSSLSessionConfig_ATSv1: CFString`](/documentation/Security/kSSLSessionConfig_ATSv1)

[`let kSSLSessionConfig_ATSv1_noPFS: CFString`](/documentation/Security/kSSLSessionConfig_ATSv1_noPFS)

[`let kSSLSessionConfig_RC4_fallback: CFString`](/documentation/Security/kSSLSessionConfig_RC4_fallback)

[`let kSSLSessionConfig_TLSv1_3DES_fallback: CFString`](/documentation/Security/kSSLSessionConfig_TLSv1_3DES_fallback)

[`let kSSLSessionConfig_TLSv1_RC4_fallback: CFString`](/documentation/Security/kSSLSessionConfig_TLSv1_RC4_fallback)

[`let kSSLSessionConfig_TLSv1_fallback: CFString`](/documentation/Security/kSSLSessionConfig_TLSv1_fallback)

[`let kSSLSessionConfig_anonymous: CFString`](/documentation/Security/kSSLSessionConfig_anonymous)

[`let kSSLSessionConfig_default: CFString`](/documentation/Security/kSSLSessionConfig_default)

[`let kSSLSessionConfig_legacy: CFString`](/documentation/Security/kSSLSessionConfig_legacy)

[`let kSSLSessionConfig_legacy_DHE: CFString`](/documentation/Security/kSSLSessionConfig_legacy_DHE)

[`let kSSLSessionConfig_standard: CFString`](/documentation/Security/kSSLSessionConfig_standard)


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