On Friday, 06/13/2008 at 02:23 EDT, Fred Schmidt <[EMAIL PROTECTED]> wrote: > We're looking to implement FTPS with certificates and SSL/TLS. We've tried z/OS > but it would appear that the server refuses to process Clear Command Channel > commands. So now we're looking for alternatives such as under z/VM or z/Linux. > > The RFC 4217 that z/VM 5.3 supposedly uses (at > http://tools.ietf.org/html/rfc4217#page-25) states... : > Using the CCC command can create security issues. For a full > description, see the "CLEAR COMMAND CHANNEL (CCC)" section of > [RFC-2228]. Clients should not assume that a server will allow the > CCC command to be processed. : > ... but I didn't find anything in the z/VM 5.3 TCP/IP manuals to indicate > whether CCC will work. > > Can anyone advise whether it will work?
No. z/VM 5.3 does not support CCC. It's on The List. Alan Altmark z/VM Development IBM Endicott
