Where allowed to run: All environments (*ALL) Threadsafe: No |
Parameters Examples Error messages |
The Change DDM TCP/IP Attributes (CHGDDMTCPA) command provides an interface to configure parameters for the use of DDM or DRDA over TCP/IP.
Restrictions:
Top |
Keyword | Description | Choices | Notes |
---|---|---|---|
AUTOSTART | Autostart server | *SAME, *NO, *YES | Optional, Positional 1 |
PWDRQD | Lowest authentication method | *SAME, *USRID, *VLDONLY, *USRIDPWD, *USRENCPWD, *ENCUSRPWD, *KERBEROS, *NO, *YES, *ENCRYPTED | Optional |
ENCALG | Lowest encryption algorithm | *SAME, *DES, *AES | Optional |
Top |
Specifies whether to automatically start the DDM server when TCP/IP is started by the Start TCP/IP (STRTCP) command. The parameter takes effect the next time the STRTCP command is run. It also causes the DDM server to start when selected TCP/IP servers are started with the Start TCP/IP Server (STRTCPSVR) command and SERVER(*AUTOSTART) is specified.
Top |
Specifies the lowest level of password security required when a client system connects to this system as a server. This parameter takes effect on the next DRDA or DDM connect request over TCP/IP.
Note: The following values are only supported for compatibility with the releases earlier than Version 5 Release 5 Modification 0 of the operating system.
Top |
Specifies the lowest strength encryption algorithm allowed on an incoming DRDA or DDM connect request over TCP/IP. This parameter takes effect on the next DRDA or DDM connect request over TCP/IP.
From highest to lowest strength, the encryption algorithms are:
Top |
Example 1: Displaying the Change DDM TCP/IP Attributes Display
CHGDDMTCPA
This command, when prompted, shows the current DDM TCP/IP attribute values.
Example 2: Starting the DDM TCP/IP Server Automatically
CHGDDMTCPA AUTOSTART(*YES)
This command indicates that the next time TCP/IP is started by the STRTCP command, the DDM server is to be started automatically.
Example 3: Allowing DDM TCP/IP Connection Requests to be Accepted if They Contain at Minimum a Userid with No Password.
CHGDDMTCPA PWDRQD(*USRID)
This command indicates that on the next DDM TCP/IP connection request, a password will not be required in order to initiate the connection.
Top |
Top |