Modifies the Rights Identifiers attribute of a given X25 Server
    Security Nodes instance to include at least the specified
    identifier name or names.

    add  [node node-id] x25 server security nodes simple-name -
          rights identifiers {simplename[,simplename...]}

    Rights Identifiers

    Default: No rights identifiers     Value: Set of simple names

    Set of rights identifiers to be associated with the set of nodes
    named in the nodes characteristic for purposes of access control
    to DTE classes at the gateway node.