Cisco 7604 Configuration Guide - Page 242
Using Object Groups with an Access List - replacement
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Simplifying Access Lists with Object Grouping Chapter 13 Identifying Traffic with Access Lists hostname(config-network)# network-object host 10.1.2.8 hostname(config-network)# network-object host 10.1.2.12 hostname(config-network)# object-group network finance hostname(config-network)# network-object host 10.1.4.89 hostname(config-network)# network-object host 10.1.4.100 You then nest all three groups together as follows: hostname(config)# object-group network admin hostname(config-network)# group-object eng hostname(config-network)# group-object hr hostname(config-network)# group-object finance You only need to specify the admin object group in your ACE as follows: hostname(config)# access-list ACL_IN extended permit ip object-group admin host 209.165.201.29 Using Object Groups with an Access List To use object groups in an access list, replace the normal protocol (protocol), network (source_address mask, and so on), service (operator port), or ICMP type (icmp_type) parameter with object-group grp_id parameter. For example, to use object groups for all available parameters in the access-list {tcp | udp} command, enter the following command: hostname(config)# access-list access_list_name [line line_number] [extended] {deny | permit} {tcp | udp} object-group nw_grp_id [object-group svc_grp_id] object-group nw_grp_id [object-group svc_grp_id] You do not have to use object groups for all parameters; for example, you can use an object group for the source address, but identify the destination address with an address and mask. The following normal access list that does not use object groups restricts several hosts on the inside network from accessing several web servers. All other traffic is allowed. hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.4 host 209.165.201.29 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.78 host 209.165.201.29 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.89 host 209.165.201.29 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.4 host 209.165.201.16 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.78 host 209.165.201.16 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.89 host 209.165.201.16 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.4 host 209.165.201.78 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.78 host 209.165.201.78 eq www hostname(config)# access-list ACL_IN extended deny tcp host 10.1.1.89 host 209.165.201.78 eq www hostname(config)# access-list ACL_IN extended permit ip any any hostname(config)# access-group ACL_IN in interface inside 13-16 Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM OL-20748-01
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