All of our TN3270 traffic is now under TLS. The PROFILE entries are a little 
strange as you have to define a port (unlike FTP). We use ICSF, so it's been on 
the whole time. Many say it is not a deal breaker requirement. 

I think that TLS is a superset of SSL, so they might talk ok. Getting SSL/TLS 
support in a client is often an extra cost option. You should be able to poke 
around PROCOMM settings and see if you see the configuration options. 

IMHO, the biggest single challenge is certificate management. Certificates have 
a pretty steep learning curve. As with any encryption solution, the actual 
encryption is trivial but the key (certificate) management is a killer. 

HTH and good luck. 
 



-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Henke, George
Sent: Tuesday, February 07, 2012 1:27 PM
To: [email protected]
Subject: TLS, AT-TLS, Encryption Requirements

Has anyone done this?

Besides coding TTLS in the TCPCONFIG statement in the TCPIP PROFILE does 
anything else, like enabling encryption cards, need to be done?

Also, is TLS downward compatible with older TN3270 emulators, like PROCOMM?





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