Probably not "some program". . .
Suggest you speak with the Sql Server support people or the network people to learn which remote connectivity optoins might be available for your system. If there are mainframe processes that connect to some non-mainframe environments, the people who support these on the mainframe should know how these connections are handled and possibly could be used for this new requirement.
And this will surely be more than a "JCL Opportunity". . .
Hope this helps,