IBM Tivoli Storage Manager for UNIX and Linux: Backup-Archive ...

SessioninitiationAuthorized UserUse the sessioninitiation option to control whether the server or client initiatessessions through a firewall. The default is that the client initiates sessions. You canuse this option with the schedule command.For the client scheduler, it is unnecessary to open any ports on the firewall. If youset the sessioninitiation option to serveronly, the client will not attempt to contactthe server. All sessions must be initiated by server prompted scheduling on the portdefined on the client with the tcpclientport option. The sessioninitiation optiononly affects the behavior of the client scheduler running in the prompted mode. Ifyou set the sessioninitiation option to serveronly, with the exception ofCAD-managed schedulers, the command line client, backup-archive client JavaGUI, and Web client GUI will still attempt to initiate sessions.Attention: You cannot use the dsmcad for scheduling when you set thesessioninitiation option to serveronly.Note: If you set the sessioninitiation option to serveronly, the client setup wizardand scheduler service are unable to authenticate to the Tivoli Storage Managerserver. In this case, you can execute the scheduler from the command line (dsmcschedule) and enter the password for your node when prompted.A similar problem can occur if an encryption key is required for backupoperations. In this case, you can execute the scheduler from the command line(dsmc schedule) and enter the encryption key when prompted. After the passwordand encryption key are updated, you must restart the scheduler.If you set the sessioninitiation option to client, the client will initiate sessions withthe server by communicating on the TCP/IP port defined with the server optiontcpport. This is the default. Server prompted scheduling can be used to prompt theclient to connect to the server.|||||Notes:1. The Tivoli Storage Manager server can specify SESSIONINITiation=clientorserveror SESSIONINITiation=serveronly on the register node and update nodecommands. If the server specifies SESSIONINITiation=clientorserver, the clientcan decide which method to use. If the server specifiesSESSIONINITiation=serveronly, all sessions are initiated by the server.2. If sessioninitiation is set to serveronly, the value for the tcpclientaddress clientoption must be the same as the value for the HLAddress option of the updatenode or register node server command. The value for the tcpclientport clientoption must be the same as the value for the LLAddress option of the updatenode or register node server command.3. The Tivoli Storage Manager client API does not support this option.SupportedOptionsClientsThis option is valid for all UNIX and Linux clients.FilePlace this option in the dsm.sys file within a server stanza. You can set this optionon the Scheduler category, Session Initiation field of the Preferences editor.344 IBM Tivoli Storage Manager for UNIX and Linux: Backup-Archive Clients Installation and User’s Guide