The MIB module is for creating and configuring object groups to support packet filtering and access control on IP and other protocols. The cfgFilterGroupTable allows users to create delete, and get information about filter groups. Filter groups are uniquely identified by the group names. Filter groups can either be of network, protocol, service and icmp and filter group type cannot be changed once it has been created. The cfgFilterNetworkGroupTable is used for managing information about IP Addresses. The cfgFilterIpProtocolGroupTable is used for managing information about protocols. The cfgFilterIpServiceGroupTable is used for managing information about services(ports). The cfgFilterICMPGroupTable is used for managing information about ICMP protocol. The cfgFilterNestedGroupTable is used for supporting nesting of filter groups(i.e configuring filter groups inside the other filter groups). Terminologies used: ICMP - Internet Control Message Protocol.