HP -UX SNAplus2 Administration Manual page 193

Select this option if an allocation request must include
a valid user name and password (or an indicator that
the password has already been verified). If you do not
select this option, no verification is required.
Restrict access
Select this option if the user name must be included on
a security access list. This field applies only if the
Conversation level security required option is
selected.
Security access list
Name of a security access list that contains user IDs
permitted to access this TP. If the Restrict
access option is selected, you must provide this value.
Chapter 7
Configuring APPC Communication
Defining TPs
193