Object Groups for ACLs

The Object Groups for ACLs feature lets you classify users, devices, or protocols into groups and apply these groups to access control lists (ACLs) to create access control policies for these groups. This feature lets you use object groups instead of individual IP addresses, protocols, and ports, which are used in conventional ACLs. This feature allows multiple access control entries (ACEs). You can use each ACE to allow an entire group of users to access a group of servers or services or to deny them access; thereby reducing the size of an ACL and improving manageability.

This module describes object-group ACLs with zone-based policy firewalls and how to configure them for zone-based firewalls.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.

Restrictions for Object Groups for ACLs

The following restrictions apply to the Object Groups for ACLs feature on zone-based firewalls:

  • IPv6 is not supported.

  • Dynamic and per-user access control lists (ACLs) are not supported.
  • You cannot remove an object group or make an object group empty if it is used in an ACL.

  • ACL statements using object groups will be ignored on packets that are sent to RP for processing.

  • Object groups are supported only for IP extended ACLs.

Information About Object Groups for ACLs

Overview of Object Groups for ACLs

In large networks, the number of lines in an access control list (ACL) can be large (hundreds of lines) and difficult to configure and manage, especially if the ACLs frequently change. Object group-based ACLs are smaller, more readable, and easier to configure and manage. Object-group-based ACLs simplify static ACL deployments for large user access environments on Cisco IOS routers. The zone-based firewall benefits from object groups, because object groups simplify policy creation (for example, group A has access to group A services).

You can configure conventional access control entries (ACEs) and ACEs that refer to object groups in the same ACL. You can use object-group-based ACLs with quality of service (QoS) match criteria, zone-based policy firewall, Dynamic Host Configuration Protocol (DHCP), and any other features that use extended ACLs.

In addition, you can use object-group-based ACLs with multicast traffic. When there are many inbound and outbound packets, using object group-based ACLs increases performance compared to conventional ACLs. Also, in large configurations, this feature reduces the storage required in NVRAM, because you need not define an individual ACE for every address and protocol pairing.

Integration of Zone-Based Firewalls with Object Groups

Zone-based firewalls use object-group access control lists (ACLs) to apply policies to specific traffic. You define an object-group ACL, associate it with a zone-based firewall policy, and apply the policy to a zone pair to inspect the traffic.

In Cisco IOS XE Release 3.12S, only expanded object-group ACLs are supported with firewalls.

The following features work with object groups that are configured on a firewall:
  • Static and dynamic network address translation (NAT)
  • Service NAT (NAT that supports non-standard FTP port numbers configured by the ip nat service command)
  • FTP application layer gateway (ALG)
  • Session Initiation Protocol (SIP) ALG

In a class map, you can configure a maximum of 64 matching statements using the match access-group command.

Objects Allowed in Network Object Groups

A network object group is a group of any of the following objects:

  • IPv6 address

  • Host IPv6 addresses

  • Other network object groups

  • Subnets

Objects Allowed in Service Object Groups

A service object group is a group of any of the following objects:

  • Source and destination protocol ports (such as Telnet or Simple Network Management Protocol [SNMP])

  • Internet Control Message Protocol (ICMP) types (such as echo, echo-reply, or unreachables)

  • Top-level protocols (such as Encapsulating Security Payload [ESP], TCP, or UDP)

  • Other service object groups

ACLs Based on Object Groups

All features that use or reference conventional access control lists (ACLs) are compatible with object-group-based ACLs, and the feature interactions for conventional ACLs are the same with object-group-based ACLs. This feature extends the conventional ACLs to support object-group-based ACLs and also adds new keywords and the source and destination addresses and ports.

You can add, delete, or change objects in an object group membership list dynamically (without deleting and redefining the object group). Also, you can add, delete, or change objects in an object group membership list without redefining the ACL access control entry (ACE) that uses the object group. You can add objects to groups, delete them from groups, and then ensure that changes are correctly functioning within the object-group-based ACL without reapplying the ACL to the interface.

You can configure an object-group-based ACL multiple times with a source group only, a destination group only, or both source and destination groups.

You cannot delete an object group that is used within an ACL or a class-based policy language (CPL) policy.

Guidelines for Object Group ACLs

  • Object groups must have unique names. For example, to create a network object group named “Engineering” and a service object group named “Engineering,” you must add an identifier (or tag) to at least one object group name to make it unique. For example, you can use the names “Engineering-admins” and “Engineering-hosts” to make the object group names unique and to make it easier for identification.

  • Additional objects can be added to an existing object group. After adding an object group, you can add more objects as required for the same group name. You do not need to re-enter existing objects; the previous configuration remains in place until the object group is removed.

  • Different objects can be grouped together. For example, objects such as hosts, protocols, or services can be grouped together and configured under the same group name. Network objects can be defined only under a network group, and service objects can be defined only under a service group.

  • When you define a group with the object-group command and use any security appliance command, the command applies to every item in that group. This feature can significantly reduce your configuration size.

  • If an ACL that is associated with a class-map for ZBF inspections includes object-groups, when you add entries to or remove entries from the ACL, the changes take effect only after you exit the access-list configuration prompt.

How to Configure Object Groups for ACLs

To configure object groups for ACLs, you first create one or more object groups. These can be any combination of network object groups (groups that contain objects such as, host addresses and network addresses) or service object groups (which use operators such as lt , eq , gt , neq , and range with port numbers). Then, you create access control entries (ACEs) that apply a policy (such as permit or deny ) to those object groups.

Creating a Network Object Group

A network object group that contains a single object (such as a single IP address, a hostname, another network object group, or a subnet) or multiple objects with a network object-group-based ACL to create access control policies for the objects.

Perform this task to create a network object group.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. object-group network object-group-name
  4. description description-text
  5. host {host-address | host-name }
  6. network-address {/nn | network-mask }
  7. group-object nested-object-group-name
  8. Repeat the steps until you have specified objects on which you want to base your object group.
  9. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

object-group network object-group-name

Example:


Device(config)# object-group network my-network-object-group

Defines the object group name and enters network object-group configuration mode.

Step 4

description description-text

Example:


Device(config-network-group)# description test engineers

(Optional) Specifies a description of the object group.

  • You can use up to 200 characters.

Step 5

host {host-address | host-name }

Example:


Device(config-network-group)# host 209.165.200.237

(Optional) Specifies the IP address or name of a host.

  • If you specify a host address, you must use an IPv4 address.

Step 6

network-address {/nn | network-mask }

Example:


Device(config-network-group)# 209.165.200.225 255.255.255.224

(Optional) Specifies a subnet object.

  • You must specify an IPv4 address for the network address. The default network mask is 255.255.255.255.

Step 7

group-object nested-object-group-name

Example:


Device(config-network-group)# group-object my-nested-object-group

(Optional) Specifies a nested (child) object group to be included in the current (parent) object group.

  • The type of child object group must match that of the parent (for example, if you are creating a network object group, you must specify another network object group as the child).

  • You can use duplicated objects in an object group only via nesting of group objects. For example, if object 1 is in both group A and group B, you can define a group C that includes both A and B. However, you cannot include a group object that causes the group hierarchy to become circular (for example, you cannot include group A in group B and then also include group B in group A).

  • You can use an unlimited number of levels of nested object groups (however, a maximum of two levels is recommended).

Step 8

Repeat the steps until you have specified objects on which you want to base your object group.

—

Step 9

end

Example:


Device(config-network-group)# end

Exits network object-group configuration mode and returns to privileged EXEC mode.

Creating a Service Object Group

Use a service object group to specify TCP and/or UDP ports or port ranges. When the service object group is associated with an access control list (ACL), this service object-group-based ACL can control access to ports.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. object-group service object-group-name
  4. description description-text
  5. protocol
  6. {tcp | udp | tcp-udp} [source {{[eq ] | lt | gt } port1 | range port1 port2 }] [{[eq ] | lt | gt } port1 | range port1 port2 ]
  7. icmp icmp-type
  8. group-object nested-object-group-name
  9. Repeat the steps to specify the objects on which you want to base your object group.
  10. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

object-group service object-group-name

Example:


Device(config)# object-group service my-service-object-group

Defines an object group name and enters service object-group configuration mode.

Step 4

description description-text

Example:


Device(config-service-group)# description test engineers

(Optional) Specifies a description of the object group.

  • You can use up to 200 characters.

Step 5

protocol

Example:


Device(config-service-group)# ahp

(Optional) Specifies an IP protocol number or name.

Step 6

{tcp | udp | tcp-udp} [source {{[eq ] | lt | gt } port1 | range port1 port2 }] [{[eq ] | lt | gt } port1 | range port1 port2 ]

Example:


Device(config-service-group)# tcp-udp range 2000 2005

(Optional) Specifies TCP, UDP, or both.

Step 7

icmp icmp-type

Example:


Device(config-service-group)# icmp conversion-error

(Optional) Specifies the decimal number or name of an Internet Control Message Protocol (ICMP) type.

Step 8

group-object nested-object-group-name

Example:


Device(config-service-group)# group-object my-nested-object-group

(Optional) Specifies a nested (child) object group to be included in the current (parent) object group.

  • The type of child object group must match that of the parent (for example, if you are creating a network object group, you must specify another network object group as the child).

  • You can use duplicated objects in an object group only via nesting of group objects. For example, if object 1 is in both group A and group B, you can define a group C that includes both A and B. However, you cannot include a group object that causes the group hierarchy to become circular (for example, you cannot include group A in group B and then also include group B in group A).

  • You can use an unlimited number of levels of nested object groups (however, a maximum of two levels is recommended).

Step 9

Repeat the steps to specify the objects on which you want to base your object group.

—

Step 10

end

Example:


Device(config-service-group)# end

Exits service object-group configuration mode and returns to privileged EXEC mode.

Creating an Object-Group-Based ACL

When creating an object-group-based access control list (ACL), configure an ACL that references one or more object groups. As with conventional ACLs, you can associate the same access policy with one or more interfaces.

You can define multiple access control entries (ACEs) that reference object groups within the same object-group-based ACL. You can also reuse a specific object group in multiple ACEs.

Perform this task to create an object-group-based ACL.

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. ip access-list extended access-list-name
  4. remark remark
  5. deny protocol source [source-wildcard ] destination [destination-wildcard ] [option option-name ] [precedence precedence ] [tos tos ] [established ] [log | log-input ] [time-range time-range-name ] [fragments ]
  6. remark remark
  7. permit protocol source [source-wildcard ] destination [destination-wildcard ] [option option-name ] [precedence precedence ] [tos tos ] [established ] [log | log-input ] [time-range time-range-name ] [fragments ]
  8. Repeat the steps to specify the fields and values on which you want to base your access list.
  9. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

configure terminal

Example:


Device# configure terminal

Enters global configuration mode.

Step 3

ip access-list extended access-list-name

Example:


Device(config)# ip access-list extended nomarketing

Defines an extended IP access list using a name and enters extended access-list configuration mode.

Step 4

remark remark

Example:


Device(config-ext-nacl)# remark protect server by denying access from the Marketing network

(Optional) Adds a comment about the configured access list entry.

  • A remark can precede or follow an access list entry.

  • In this example, the remark reminds the network administrator that the subsequent entry denies the Marketing network access to the interface.

Step 5

deny protocol source [source-wildcard ] destination [destination-wildcard ] [option option-name ] [precedence precedence ] [tos tos ] [established ] [log | log-input ] [time-range time-range-name ] [fragments ]

Example:


Device(config-ext-nacl)# deny ip 209.165.200.244 255.255.255.224 host 209.165.200.245 log
Example based on object-group:

Router(config)#object-group network my_network_object_group
Router(config-network-group)#209.165.200.224 255.255.255.224
Router(config-network-group)#exit
Router(config)#object-group network my_other_network_object_group
Router(config-network-group)#host 209.165.200.245
Router(config-network-group)#exit
Router(config)#ip access-list extended nomarketing
Router(config-ext-nacl)#deny ip object-group my_network_object_group object-group my_other_network_object_group log

(Optional) Denies any packet that matches all conditions specified in the statement.

  • Optionally use the object-group service-object-group-name keyword and argument as a substitute for the protocol. argument

  • Optionally use the object-group source-network-object-group-name keyword and argument as a substitute for the source source-wildcard. arguments

  • Optionally use the object-group destination-network-object-group-name keyword and argument as a substitute for the destination destination-wildcard. arguments

  • If the source-wildcard or destination-wildcard is omitted, a wildcard mask of 0.0.0.0 is assumed, which matches all bits of the source or destination address, respectively.

  • Optionally use the any keyword as a substitute for the source source-wildcard or destination destination-wildcard to specify the address and wildcard of 0.0.0.0 255.255.255.255.

  • Optionally use the host source keyword and argument to indicate a source and source wildcard of source 0.0.0.0 or the host destination keyword and argument to indicate a destination and destination wildcard of destination 0.0.0.0.

  • In this example, packets from all sources are denied access to the destination network 209.165.200.244. Logging messages about packets permitted or denied by the access list are sent to the facility configured by the logging facility command (for example, console, terminal, or syslog). That is, any packet that matches the access list will cause an informational logging message about the packet to be sent to the configured facility. The level of messages logged to the console is controlled by the logging console command.

Step 6

remark remark

Example:


Device(config-ext-nacl)# remark allow TCP from any source to any destination

(Optional) Adds a comment about the configured access list entry.

  • A remark can precede or follow an access list entry.

Step 7

permit protocol source [source-wildcard ] destination [destination-wildcard ] [option option-name ] [precedence precedence ] [tos tos ] [established ] [log | log-input ] [time-range time-range-name ] [fragments ]

Example:


Device(config-ext-nacl)# permit tcp any any

Permits any packet that matches all conditions specified in the statement.

  • Every access list needs at least one permit statement.

  • Optionally use the object-group service-object-group-name keyword and argument as a substitute for the protocol.

  • Optionally use the object-group source-network-object-group-name keyword and argument as a substitute for the source source-wildcard.

  • Optionally use the object-group destination-network-object-group-name keyword and argument as a substitute for the destination destination-wildcard.

  • If source-wildcard or destination-wildcard is omitted, a wildcard mask of 0.0.0.0 is assumed, which matches on all bits of the source or destination address, respectively.

  • Optionally use the any keyword as a substitute for the source source-wildcard or destination destination-wildcard to specify the address and wildcard of 0.0.0.0 255.255.255.255.

  • In this example, TCP packets are allowed from any source to any destination.

  • Use the log-input keyword to include input interface, source MAC address, or virtual circuit in the logging output.

Step 8

Repeat the steps to specify the fields and values on which you want to base your access list.

Remember that all sources not specifically permitted are denied by an implicit deny statement at the end of the access list.

Step 9

end

Example:


Device(config-ext-nacl)# end

Exits extended access-list configuration mode and returns to privileged EXEC mode.

Configuring Class Maps and Policy Maps for Object Groups

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. class-map type inspect match-all class-map-name
  4. match access-group name access-list-name
  5. exit
  6. policy-map type inspect policy-map-name
  7. class type inspect class-map-name
  8. pass
  9. exit
  10. class class-default
  11. drop
  12. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Device> enable
Enables privileged EXEC mode.
  • Enter your password if prompted.

Step 2

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 3

class-map type inspect match-all class-map-name

Example:

Device(config)# class-map type inspect match-all ogacl-cmap

Creates a Layer 3 and Layer 4 inspect type class map and enters the class-map configuration mode.

Step 4

match access-group name access-list-name

Example:

Device(config-cmap)# match access-group name my-ogacl-policy

Configures a match criterion for a class map on the basis of the specified ACL.

Step 5

exit

Example:

Device(config-cmap)# exit

Exits class-map configuration mode and returns to global configuration mode.

Step 6

policy-map type inspect policy-map-name

Example:

Device(config)# policy-map type inspect ogacl-pmap

Creates a inspect-type policy map and enters policy-map configuration mode.

Step 7

class type inspect class-map-name

Example:

Device(config-pmap)# class type inspect ogacl-cmap

Specifies the traffic class on which an action is to be performed and enters policy-map class configuration mode.

Step 8

pass

Example:

Device(config-pmap-c)# pass

Allows packets to be sent to a device without being inspected.

Step 9

exit

Example:

Device(config-pmap-c)# exit

Exits policy-map class configuration mode and returns to policy-map configuration mode.

Step 10

class class-default

Example:

Device(config-pmap)# class class-default

Specifies the default class to configure or modify a policy and enters policy-map class configuration mode.

Step 11

drop

Example:

Device(config-pmap-c)# drop

Drops packets that are sent to a device.

Step 12

end

Example:

Device(config-pmap-c)# end

Exits policy-map class configuration mode and returns to privileged EXEC mode.

Configuring Zones for Object Groups

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. zone security zone-name
  4. exit
  5. zone security zone-name
  6. exit
  7. interface type number
  8. zone-member security zone-name
  9. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Device> enable
Enables privileged EXEC mode.
  • Enter your password if prompted.

Step 2

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 3

zone security zone-name

Example:

Device(config)# zone security outside
Creates a security zone and enters security zone configuration mode.
  • You need two security zones to create a zone pair: a source zone and a destination zone

Step 4

exit

Example:

Device(config-sec-zone)# exit

Exits security zone configuration mode and returns to global configuration mode.

Step 5

zone security zone-name

Example:

Device(config)# zone security inside
Creates a security zone and enters security zone configuration mode.
  • You need two security zones to create a zone pair: a source zone and a destination zone

Step 6

exit

Example:

Device(config-sec-zone)# exit

Exits security zone configuration mode and returns to global configuration mode.

Step 7

interface type number

Example:

Device(config)# interface gigabitethernet 0/1/1

Configures an interface and enters interface configuration mode.

Step 8

zone-member security zone-name

Example:

Device(config-if)# zone-member security inside

Attaches an interface to a security zone.

Step 9

end

Example:

Device(config-if)# end

Exits interface configuration mode and returns to global configuration mode.

Applying Policy Maps to Zone Pairs for Object Groups

SUMMARY STEPS

  1. enable
  2. configure terminal
  3. zone-pair security zone-pair-name source {zone-name | default | self} destination {zone-name | default | self}
  4. service-policy type inspect policy-map-name
  5. end

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:

Device> enable
Enables privileged EXEC mode.
  • Enter your password if prompted.

Step 2

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 3

zone-pair security zone-pair-name source {zone-name | default | self} destination {zone-name | default | self}

Example:

Device(config)# zone-pair security out-to-in source outside destination inside

Creates a zone pair and enters security zone-pair configuration mode.

Step 4

service-policy type inspect policy-map-name

Example:

Device(conf-sec-zone-pair)# service-policy type inspect ogacl-pmap

Attaches a firewall policy map to a security zone pair.

Step 5

end

Example:

Device(config-sec-zone-pair)# end

Exits security zone-pair configuration mode and returns to global configuration mode.

Verifying Object Groups for ACLs

SUMMARY STEPS

  1. enable
  2. show object-group [object-group-name ]
  3. show ip access-list [access-list-name ]

DETAILED STEPS

  Command or Action Purpose

Step 1

enable

Example:


Device> enable

Enables privileged EXEC mode.

  • Enter your password if prompted.

Step 2

show object-group [object-group-name ]

Example:


Device# show object-group my-object-group

Displays the configuration in the named or numbered object group (or in all object groups if no name is entered).

Step 3

show ip access-list [access-list-name ]

Example:


Device# show ip access-list my-ogacl-policy

Displays the contents of the named or numbered access list or object group-based ACL (or for all access lists and object group-based ACLs if no name is entered).

Configuration Examples for Object Groups for ACLs

Example: Creating an IPv6 Network Object Group

The following example shows how to create an IPv6 network object group named v6-network ognet1: 


Device> enable
Device# configure terminal
Device(config)# object-group v6-network ognet1
Device(config-v6-network-group)# 1:1:2::0/32
Device(config-v6-network-group)# host AB:233::23D5
Device(config-v6-network-group)# exit

The following example shows how to create a network object group named v6-network ognet2, which contains a host, a subnet, and an existing object group (child) as objects: 


Device> enable
Device# configure terminal
Device(config)# object-group network v6-network ognet2
Device(config-v6network-group)# 1:2:3::4/36
Device(config-v6network-group)# host AABB::CCDD
Device(config-v6network-group)# group-object ognet1
Device(config-v6network-group)# exit

Example: Creating a IPv6 Service Object Group

The following example shows how to create a service object group named v6-service ogserv1, which contains several ICMP, TCP, UDP, and TCP-UDP protocols as objects: 


Device> enable
Device# configure terminal
Device(config)# object-group service v6-service ogserv1
Device(config-v6service-group)# icmp unreachable
Device(config-v6service-group)# tcp smtp
Device(config-v6service-group)# tcp telnet
Device(config-v6service-group)# tcp source range 3000 4000 telnet
Device(config-v6service-group)# pcp 
Device(config-v6service-group)# udp domain
Device(config-v6service-group)# hph
Device(config-v6service-group)# exit

Example: Creating an IPv6 Object Group-Based ACL

The following example shows how to create an IPv6 object-group-based ACL that permits packets:


Device> enable
Device# configure terminal
Device(config)# ipv6 access-list ogacl1
Device(config-ipv6-acl)# permit object-group ogserv1 5:6:7::5/56 object-group ognet1
Device(config-ipv6-acl)# deny ip object-group ognet2 object-group ognet3
Device(config-ipv6-acl)# permit ipv6 any any
Device(config-ipv6-acl)# exit

Example: Configuring Class Maps and Policy Maps for Object Groups

Device# configure terminal
Device(config)# class-map type inspect match-all ogacl-cmap
Device(config-cmap)# match access-group name my-ogacl-policy
Device(config-cmap)# exit
Device(config)# policy-map type inspect ogacl-pmap
Device(config-pmap)# class type inspect ogacl-cmap
Device(config-pmap-c)# pass
Device(config-pmap-c)# exit
Device(config-pmap)# class class-default
Device(config-pmap-c)# drop
Device(config-pmap-c)# end

Example: Configuring Zones for Object Groups

Device# configure terminal
Device(config)# zone security outside
Device(config-sec-zone)# exit
Device(config)# zone security inside
Device(config-sec-zone)# exit
Device(config)# zone-pair security out-to-in source outside destination inside
Device(conf-sec-zone-pair)# exit
Device(config)# interface gigabitethernet 0/1/1
Device(config-if)# zone-member security inside
Device(config-if)# exit
Device(config)# interface gigabitethernet 0/1/0
Device(config-if)# zone-member security outside
Device(config-if)# end

Example: Applying Policy Maps to Zone Pairs for Object Groups

Device# configure terminal
Device(config)# zone-pair security out-to-in source outside destination inside 
Device(config-sec-zone-pair)# service-policy type inspect ogacl-pmap
Device(config-sec-zone-pair)# end

Example: Verifying IPv6 Object Groups for ACLs

The following example shows how to display all object groups: 

Device# show object-group

V6-Network object group ognet1
1:1:2::/32
host AB:233::23D5
V6-Network object group ognet2
1:2:3::4/36
host AABB::CCDD
group-object ognet1
V6-Network object group ognet3
host 1::1
host 1::2
host 1::3
V6-Service object group ogserv1
icmp unreachable
tcp source range 3000 4000 eq telnet
pcp
hbh

The following example shows how to display information about IPv6 object-group-based ACL:


Device# show ipv6 access-list
IPv6 access list ogacl1
      permit object-group ogserv1 5:6:7::/56 object-group ognet1 sequence 10
      deny ipv6 object-group ognet2 object-group ognet3 sequence 20
      permit ipv6 any any sequence 30

Additional References for Object Groups for ACLs

Related Documents

Related Topic

Document Title

Cisco IOS commands

Cisco IOS Master Command List, All Releases

Security commands

ACL configuration guide

Security Configuration Guide: Access Control Lists

Technical Assistance

Description

Link

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http://www.cisco.com/cisco/web/support/index.html

Feature Information for IPv6 Object Groups for ACLs

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 1. Feature Information for Object Groups for ACLs

Feature Name

Releases

Feature Information

IPv6 Object Groups for ACLs

Cisco IOS XE Release 16.11.1

The IPv6 Object Groups for ACLs feature lets you classify users, devices, or protocols into groups and apply them to access control lists (ACLs) to create access control policies for those groups. This feature lets you use object groups instead of individual IP addresses, protocols, and ports, which are used in conventional ACLs. This feature allows multiple access control entries (ACEs), but now you can use each ACE to allow an entire group of users to access a group of servers or services or to deny them from doing so.