What you need to get started with TCP⁄IP

TCP⁄IP is a part of your z/OS® system. To use it you need a TSO user ID and password. If you are already a TSO user, you can begin using TCP⁄IP.

In order to use z/OS Communications Server for V2R1 applications, you must be authorized to use z/OS UNIX System Services. For information about z/OS UNIX, see the z/OS UNIX System Services User's Guide.

Ensure that you have the following before proceeding:

User IDs and passwords: You should have a user ID and password for each host you intend to use that requires user authorization and authentication. This includes most hosts you use. Some hosts on a TCP⁄IP network use a user ID of anonymous and a password of guest to permit all interested parties access to data sets contained at that host, but that is the exception and not the rule.
Host names: TCP⁄IP commands require that you know the name or IP address of the remote host you want to use.
Authorizations for data and programs: Your ability to access data sets and programs on remote hosts depends on the data security system used by that host. You might require authorization by the Resource Access Control Facility (RACF®) or other security programs before you can gain access to data sets, commands, or other resources on remote hosts.
Electronic mail addresses: To send mail electronically, you need the e-mail address of the users you want to send mail to and they need to know your electronic mail address to send you mail.
Printer names: You need the printer name and name of the remote host to which it is attached to print using TCP⁄IP.