I went to a training class once at Wall Data where we used a government mainframe for some basic exercises connecting to a mainframe. We used the Library of Congress mainframe. This might be a good way to practice connecting to a mainframe without using cycles on your production machine. In webMethods Mainframe you would use connection type 3270e. Try to telnet to this address: telnet.loc.gov
You may have to get permission to go thru the firewall at your company to this public mainframe.
“LOCIS is the Library of Congress’s mainframe-based collection of databases including a public access catalog of bibliographic information, federal legislation, copyright registered works, braille and audio materials, guides (e.g., Science Tracers Bullets) and organization descriptions, and foreign law abstracts. LOCIS databases are available for limited hours.”
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