Secure Socket Layer (ssl)

Primary definition

A protocol used for protecting private information during transmission via the Internet. Note: SSL works by using the service public key to encrypt a secret key that is used to encrypt the data that is transferred over the SSL session. Most web browsers support SSL and many web sites use the protocol to obtain confidential user information, such as credit card numbers. By convention, URLs that require an SSL connection start with "https:" instead of "http:". The default port for SSL is 443.

Also known asTransport Layer Security (TLS) · TLS · SSL/TLS
2 sources cited4 related termsReviewed Aug 10, 2026
Committee on National Security Systems Glossary CNSSI 4009-2015View source

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CNSSGC

A protocol used for protecting private information during transmission via the Internet. Note: SSL works by using the service public key to encrypt a secret key that is used to encrypt the data that is transferred over the SSL session. Most web browsers support SSL and many web sites use the protocol to obtain confidential user information, such as credit card numbers. By convention, URLs that require an SSL connection start with "https:" instead of "http:". The default port for SSL is 443.

Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024

Cite this term

Permanent URL · stable across revisions
Election Security Glossary. (2026). Secure Socket Layer (ssl). In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/secure-socket-layer-ssl

Sources

2 cited · last checked Aug 10, 2026

01

Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015

High consensus

View source

02

The Cyber Glossary
The Cyber Glossary

Multi-source

View source

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