Using TLS to protect data
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Recommended profiles to securely configure TLS for the most common versions and scenarios, with additional guidance for managing older versions.
Adapted edition
- Document type
- Reference Guide
- Format
- DOCX
- Pages
- 8
- Language
- English
- Version
- 1.0
- Updated
- 2026-09-16
- Category
- Information security
- Licence
- Open Government Licence v3.0
Description
Recommended profiles to securely configure TLS for the most common versions and scenarios, with additional guidance for managing older versions for organisational planning, review and training. NCSC guidance is advisory and should be applied to the organisation's own risks and obligations.
Contents
- Introduction
- About TLS
- Deprecated protocols
- Current version
- Post-quantum cryptography in TLS
- General TLS configuration
- Summary
- TLS 1.3 configuration
- Recommended Profiles for TLS 1.3
- TLS 1.2 configuration
- Recommended Profiles for TLS 1.2
- Compatibility Profile for TLS 1.2
- Legacy versions
- Legacy Profiles for TLS 1.1 and 1.0
- Third-Party services
- Avoiding known insecurities
- Source links
Source and licence
National Cyber Security Centre
AttributionNational Cyber Security Centre, “Using TLS to protect data” (21 July 2021), reused under the Open Government Licence v3.0.
ChangesAdapted 16 September 2026: converted the official HTML article into neutral text-only DOCX and PDF editions. Preserved article headings, paragraphs, lists and plain-text source-link destinations; normalized web whitespace and typographic punctuation; omitted site navigation, topic and download cards, images, logos, scripts, styles and page furniture.
Version history
- v1.016/09/2026