If you do not apply this patch, you are going to start having users unable to connect using SSL to your Domino servers.
Vendors and customer sites are starting to release operating system and browser patch that block access to sites using only SSLv3 without TLS. Until this morning, that meant all Domino servers not using a reverse proxy front end of some kind. This patch adds TLS 1.0 to Domino versions 8.51, 8.52, 8.53, 9.0, and 9.01 in all the various platforms. TLS 1.0 is a fairly old version of TLS but it will do the job for the time being.
This link will lead you to all the various patch versions to add TLS 1.0 for Domino
http://www-01.ibm.com/support/docview.wss?uid=swg21687167
This link will let you support SHA-2 in SSL on Domino 9.0 or above
http://www-01.ibm.com/support/docview.wss?uid=swg21418982
For me, downloading the 32 and 64 bit versions of the TLS patch for Windows and Linux for those platforms so I can be ready to start my day of glorious patching took about 45 minutes of link following and resulted in downloading 22 patch files from fix central. Each patch file is for a different version of Domino.
Thanks go to Gab Davis for being the first to send me a note this morning about the release of this patch -- and then half dozen or so others who quickly followed. I know what I'll be doing today.
PS: If you want more information about the patch, you can also take a look at Daniel Nashed's blog posting about it. It makes no sense for me to repeat everything he's said. Just go read it on his site.
http://blog.nashcom.de/nashcomblog.nsf/dx/domino-tls-1.0-sha-2-support-to-prevent-poodle-has-been-shipped-today.htm
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