[Introduction] [Why ?] [IPsec] [SSL] [Apache / SSL] [SSH]

SSL

SSL is a protocol initially designed by Netscape Communications which is now an IETF standard under the name of TLS (Transport Layer Security)

This protocol is using TCP and has specific port numbers:

HTTPS (443), NNTPS (563), LDAPS (636), FTPS(989 for data, 990 for control), telnets (992), IMAPS (993), POP3S (995), SMTP-TLS (25)

Main use: HTTPS

Security services provided:

Data confidentiality (RC4, DES, 3DES...)

Data integrity and authentication (MD5, SHA-1)

Optional peer authentication with public key cryptography

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