For improved performance, IWSVA caches the IP address for LDAP User ID and Group relationships.
               This cache applies the previously authenticated User IDs to future connections originating
               from the same IP for as long as is specified in the cache setting. The default value
               is 2 hours.
            This relationship is not supported for certain network configurations though, namely
               a downstream proxy. You need to disable ID Cache for the following network configurations:
            client > proxy > IWSVA
            client > ICAP > IWSVA
            client > firewall > IWSVA
            In these configurations, the User's unique IP address would be masked if this feature
               were enabled—IWSVA sees only the downstream proxy rather than the originating client.
            
               
                  
                     |  | WARNING
                           
                           Do NOT disable user ID cache when IWSVA is in transparent mode. | 
               
             
            To disable the User ID cache:
            
               - 
                  
                  Login IWSVA CLI interface and change to enable mode. 
- 
                  
                  Type the following command: configure module ldap ipuser_cache disable 
Explanation of related parameters:
            
               - 
                  
                  ip_user_central_cache_interval: Specifies the duration for which the IP address /
                     User ID remains valid. The default value is 2 hours. 
- 
                  
                  user_groups_central_cache_interval: Specifies the duration for which the User / Group
                     relationship remains cached. The default value is 2 hours. Decrease this value if
                     your group relationships often change. 
See also