SSL 2.0

E6788

cryptographic protocol network security protocol obsolete protocol

SSL 2.0 is an early, now-obsolete version of the Secure Sockets Layer protocol that provided encrypted communication over networks before being replaced by more secure successors like TLS.

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All labels observed (4)

Label	Occurrences
SSL 2.0 canonical	7
SSL 2.0 is insecure	1
SSL 2.0 is obsolete	1
Secure Sockets Layer version 2.0	1

How this entity was disambiguated

This entity first appeared as the object of triple T63851 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: SSL 2.0
Context triple: [TLS, successorTo, SSL 2.0]

A. SSL 3.0
SSL 3.0 is an obsolete cryptographic protocol that once secured internet communications and served as the foundation for the early versions of TLS.
B. RFC 5246
RFC 5246 is the Internet Engineering Task Force (IETF) standard that specifies Transport Layer Security (TLS) version 1.2, a widely used protocol for securing communications over computer networks.
C. TLS
TLS (Transport Layer Security) is a cryptographic protocol that secures data transmitted over networks by providing encryption, authentication, and integrity between communicating applications.
D. Wired Equivalent Privacy
Wired Equivalent Privacy (WEP) is an early and now largely obsolete Wi‑Fi security protocol known for its weak encryption and significant vulnerabilities.
E. Diffie–Hellman key exchange
Diffie–Hellman key exchange is a foundational cryptographic protocol that enables two parties to securely establish a shared secret over an insecure communication channel.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: SSL 2.0
Target entity description: SSL 2.0 is an early, now-obsolete version of the Secure Sockets Layer protocol that provided encrypted communication over networks before being replaced by more secure successors like TLS.

A. SSL 3.0
SSL 3.0 is an obsolete cryptographic protocol that once secured internet communications and served as the foundation for the early versions of TLS.
B. RFC 5246
RFC 5246 is the Internet Engineering Task Force (IETF) standard that specifies Transport Layer Security (TLS) version 1.2, a widely used protocol for securing communications over computer networks.
C. TLS
TLS (Transport Layer Security) is a cryptographic protocol that secures data transmitted over networks by providing encryption, authentication, and integrity between communicating applications.
D. Wired Equivalent Privacy
Wired Equivalent Privacy (WEP) is an early and now largely obsolete Wi‑Fi security protocol known for its weak encryption and significant vulnerabilities.
E. Diffie–Hellman key exchange
Diffie–Hellman key exchange is a foundational cryptographic protocol that enables two parties to securely establish a shared secret over an insecure communication channel.
F. None of above. chosen

Statements (48)

Predicate	Object
instanceOf	cryptographic protocol ⓘ network security protocol ⓘ obsolete protocol ⓘ
abbreviationFor	Secure Sockets Layer version 2.0 ⓘ linked to: SSL 2.0
belongsToCategory	Internet protocols ⓘ transport layer security protocols ⓘ
designedFor	encrypted communication over computer networks ⓘ securing HTTP traffic ⓘ securing TCP connections ⓘ
developedBy	Netscape Communications ⓘ linked to: Netscape Communications Corporation
disabledByDefaultIn	modern web browsers ⓘ modern web servers ⓘ
enables	confidentiality ⓘ integrity ⓘ server authentication ⓘ
follows	SSL 1.0 ⓘ
hasProperty	does not protect the integrity of the handshake ⓘ no support for strong modern ciphers ⓘ supports only server authentication by default ⓘ vulnerable to man-in-the-middle attacks ⓘ vulnerable to truncation attacks ⓘ weak MAC construction ⓘ weak key material generation ⓘ
hasVersionNumber	2.0 ⓘ
historicalRole	early standard for securing web traffic ⓘ foundation for later SSL and TLS versions ⓘ
introducedInYear	1995 ⓘ
notRecommendedBy	IETF ⓘ linked to: Internet Engineering Task Force security best practices ⓘ
partOf	Secure Sockets Layer ⓘ linked to: SSL
precedes	SSL 3.0 ⓘ TLS 1.0 ⓘ
prohibitedBy	RFC 6176 ⓘ
prohibitedIn	TLS protocol specifications ⓘ
replacedBy	SSL 3.0 ⓘ TLS 1.0 ⓘ Transport Layer Security ⓘ linked to: TLS
specifiedIn	RFC 6176 (prohibition of SSL 2.0) ⓘ
status	deprecated ⓘ insecure ⓘ obsolete ⓘ
supports	X.509 certificates ⓘ
usedPortTypically	TCP port 443 ⓘ
usedWith	HTTPS ⓘ early secure web applications ⓘ
uses	message authentication codes ⓘ public key cryptography ⓘ symmetric key cryptography ⓘ