TN3270 Plus release 4.0.0 and above support TLSv1, TLSv1.1
TN3270 Plus release 3.7.5 supports SSLv2, SSLv3, TLSv1,
TLSv1.1 and TLSv1.2.
TN3270 Plus release 3.7.4 supports SSLv2, SSLv3, TLSv1,
TLSv1.1 and TLSv1.2.
TN3270 Plus release 3.7.3 and below support SSLv2, SSLv3 and
In TN3270 Plus Release 4.0.0 and above, support for SSL Version 2 and SSL Version 3
are not available due to security vulnerabilities inherent
in those protocols.
TN3270 Plus release 3.7.4 and 3.7.5 support SSL Version 2 and SSL
Version 3 and will remain available to users until they are able to
convert to TLS. Release 3.7.4 has an option to disable the use of CBC
ciphers that can be expoited using the
Releases earlier that 3.7.4 support SSL Version
2 and SSL Version 3, but we highly recommend that you update to
release 3.7.4 or to release 4.0.0 and the TLS protocol. Releases earlier
than 3.7.2 may be affected by the
Heartbleed security vulnerability.
TN3270 Plus supports an encryption strength of up to 128 bits. SSL/TLS support is
included with the TN3270 Plus SSL Feature. You must
include the SSL Feature in your order if you require SSL/TLS support. If
you currently have TN3270 Plus without the SSL Feature, you can order an
upgrade and add the SSL Feature. A typical TN3270 Plus configuration
for an SSL connection to an IBM zSeries host computer would include:
3270 Terminal (T)
SSL Feature (L)
A typical TN3270 Plus configuration
for an SSL connection to an IBM iSeries computer with SSL would include:
TN3270 Plus is an SSL/TLS client. TN3270 Plus Release
4.0.0 and above support TLS V1, TLS V1.1 and TLS V1.2 TN3270 Plus SSL/TLS can be used
to connect to a zSeries computer running SSL/TLS server software via
TCP/IP. The SSL (Secure Sockets Layer) or TLS (Transport Layer Security) protocol allows
the secure transmission of data across the Internet. SSL/TLS is the protocol used by
e-commerce sites on the Internet to protect your personal and credit card
information. TN3270 Plus SSL/TLS allows a
secure connection to a host computer. Data transmitted to and from the host
computer is safe from viewing and tampering by outside parties.
For details on how SSL/TLS works, see the following links:
OpenSSL - Maintains and
distributes and Open Source SSL and TLS protocol software.
TN3270 Plus SSL support includes software developed by the OpenSSL project for the OpenSSL
toolkit. This feature includes cryptographic software written by Eric Young. This feature includes software written by Tim Hudson. (See the
OpenSSL license agreement.)