This read-write {off(0), on(1)} object turns IP access filtering on or off for the CMM4, where off(0) allows all IPs and on(1) restricts access to only the addresses in the allowed list (cmm4IpAccess1-3). It is a basic access-control gate an admin uses to lock down management access to trusted hosts only. Before enabling cmm4IpAccessFilter, an admin must first populate cmm4IpAccess1 through cmm4IpAccess3 with the management stations that still need access, or they risk locking themselves out.