In SNA network an LU-LU session in which a function management data( FMD) request may be enciphered before it is transmitted and deciphered after it is received.

• 在系统网络体系结构(NA)络中,一种逻辑单元到逻辑单元之间的话路,其中的操作管理数据(MD)求在被发送出去之前要对它进行加密、及在被接收到之后要对它进行解密。