The main consideration for using DB2 Universal Database for AS/400 as a DRDA application requester over TCP/IP is, besides the security considerations discussed in the next section, adding an RDB directory entry for the remote application server. This is done in a similar manner to what was described in the previous chapter on the use of SNA commnications. However, instead of APPC parameters such as remote LU name and transaction program name, there are two TCP/IP parameters: remote host name or IP address, and port number or service name. The second element of the remote location parameter can be specified as *SNA (the default), or *IP (to indicate that the connection will be using TCP/IP).