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5.6.1.1 One-Way CHAP.  One-Way CHAP sets a “Username” and “Secret” in 
the Target (iS5xx iSCSI Bridge) that an initiating device must use in 
order for the Target to authenticate the Initiator for communications.  
You must choose “CHAP” on the “Authentication Method” pull-down 
menu before you can enable “One-Way” CHAP in the “CHAP 
Direction” pull-down menu.  Once you have done so, you can specify 
a “Target Username” and a “Target Usersecret”.  Ensure that your 
iSCSI Intiator is correctly configured for authentication.  Please see 
the Glossary for further information.