Programmability Configuration Guide, Cisco IOS XE Amsterdam 17.3.x

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Programmability Configuration Guide, Cisco IOS XE Amsterdam 17.3.x

Chapter Title

NETCONF and RESTCONF Service-Level ACLs

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Updated:
July 31, 2020

Chapter: NETCONF and RESTCONF Service-Level ACLs

NETCONF and RESTCONF Service-Level ACLs

This module describes the service-levels ACLs supported on NETCONF and RESTCONF, and how to configure it.

Information About NETCONF and RESTCONF Service-Level ACLs

Overview of NETCONF and RESTCONF Service-Level ACLs

You can configure an IPv4 or IPv6 access control list (ACL) for NETCONF and RESTCONF sessions. Clients that do not conform to the configured ACLs are not allowed to access the NETCONF or RESTCONF subsystems. When service-level ACLs are configured, NETCONF-YANG and RESTCONF connection requests are filtered based on the source IP address.

If no service-level ACLs are configured, all NETCONF-YANG and RESTCONF connection requests are permitted into the subsystems.


Note

Only named ACLs are supported; numbered ACLs are not supported.

How to Configure NETCONF and RESTCONF Service-Level ACLs

Configuring an ACL for a NETCONF-YANG Session

You can either configure an IP access-list or an IPv6 access list for your NETCONF-YANG session.

SUMMARY STEPS

  1. enable
  2. configure terminal
    • ip access-list {standard | extended} access-list-name
    • ipv6 access-list access-list-name
  4. permit {host-address | host-name | any} [wildcard]
  5. deny {host-address | host-name | any} [wildcard]
  6. exit
  7. netconf-yang ssh {{ipv4 | ipv6 }access-list name access-list-name} | port port-number}
  8. 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 {standard | extended} access-list-name
  • ipv6 access-list access-list-name

Example:

Device(config)# ip access-list standard acl1_permit 
Device(config)# ipv6 access-list ipv6-acl1_permit

  • Specifies a standard IP access list and enters standard access-list configuration mode.

  • Specifies an IPv6 access list and enters IPv6 access-list configuration mode.

Step 4

permit {host-address | host-name | any} [wildcard]

Example:

Device(config-std-nacl)# permit 192.168.255.0 0.0.0.255

Sets conditions in an IP/IPv6 access list that will permit packets.

Step 5

deny {host-address | host-name | any} [wildcard]

Example:

Device(config-std-nacl)# deny any

Sets conditions in an IP or IPv6 access list that will deny packets.

Step 6

exit

Example:

Device(config-std-nacl)# exit

Exits standard access-list configuration mode and returns to global configuration mode.

Step 7

netconf-yang ssh {{ipv4 | ipv6 }access-list name access-list-name} | port port-number}

Example:

Device(config)# netconf-yang ssh ipv4 access-list name acl1_permit

Configures an ACL for the NETCONF-YANG session.

Step 8

end

Example:

Device(config)# end

Exits global configuration mode and returns to privileged EXEC mode.

Configuring an ACL for a RESTCONF Session

You can either configure an IP access list or an IPv6 access list for your RESTCONF session.

SUMMARY STEPS

  1. enable
  2. configure terminal
    • ip access-list {standard | extended} access-list-name
    • ipv6 access-list access-list-name
  4. permit {protocol-number | ipv6-source-address | ipv6-source-prefix | protocol}any
  5. deny {protocol-number | ipv6-source-address | ipv6-source-prefix | protocol}any any
  6. exit
  7. restconf {ipv4 | ipv6 }access-list name access-list-name
  8. 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 {standard | extended} access-list-name
  • ipv6 access-list access-list-name

Example:

Device(config)# ip access-list standard acl1_permit 
Device(config)# ipv6 access-list ipv6-acl1_permit

  • Specifies a standard IP access list and enters standard access-list configuration mode.

  • Specifes an IPv6 access list and enters IPv6 access list configuration mode.

Step 4

permit {protocol-number | ipv6-source-address | ipv6-source-prefix | protocol}any

Example:

Device(config-ipv6-acl)# permit ipv6 2001:db8::1/32 any

Sets conditions in an IPv6 access list that will permit packets.

Step 5

deny {protocol-number | ipv6-source-address | ipv6-source-prefix | protocol}any any

Example:

Device(config-ipv6-acl)# deny ipv6 any any

Sets conditions in an IPv6 access list that will deny packets.

Step 6

exit

Example:

Device(config-ipv6-acl)# exit

Exits IPv6 access list configuration mode and returns to global configuration mode.

Step 7

restconf {ipv4 | ipv6 }access-list name access-list-name

Example:

Device(config)# restconf ipv6 access-list name ipv6-acl1_permit

Configures an ACL for the RESTCONF session.

Step 8

end

Example:

Device(config)# end

Exits global configuration mode and returns to privileged EXEC mode.

Configuration Examples for NETCONF and RESTCONF Service-Level ACLs

Example: Configuring an ACL for a NETCONF Session


Device# enable
Device# configure terminal
Device(config)# ip access-list standard acl1_permit 
Device(config-std-nacl)# permit 192.168.255.0 0.0.0.255
Device(config-std-nacl)# deny any 
Device(config-std-nacl)# exit
Device(config)# netconf-yang ssh ipv4 access-list name acl1_permit
Device(config)# end

Example: Configuring an ACL for a RESTCONF Session


Device# enable
Device# configure terminal
Device(config)# ipv6 access-list ipv6-acl1_permit 
Device(config-ipv6-acl)# permit ipv6 2001:db8::1/32 any
Device(config-ipv6-acl)# deny ipv6 any any
Device(config-ipv6-acl)# exit
Device(config)# restconf ipv6 access-list name ipv6-acl1_permit
Device(config)# end

Additional References for NETCONF and RESTCONF Service-Level ACLs

Related Documents

Related Topic Document Title

NETCONF-YANG

NETCONF Protocol

RESTCONF

RESTCONF Protocol

Programmability commands

Programmability Command Reference

Technical Assistance

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Feature Information for NETCONF and RESTCONF Service-Level 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 NETCONF and RESTCONF Service-Level ACLs

Feature Name

Releases

Feature Information

NETCONF and RESTCONF Service-Level ACLs

Cisco IOS XE Everest 16.11.1

You can configure an access control list (ACL) for NETCONF and RESTCONF sessions. Clients that do not conform to the configured ACL are not allowed to access the NETCONF or RESTCONF subsystems.

The following commands were introduced or modified: netconf-yang ssh access-list and restconf access-list

  • Cisco ASR 900 Series Aggregation Services Routers

  • Cisco ASR 920 Series Aggregated Services Routers (RSP2)

  • Cisco Catalyst 3650 Series Switches

  • Cisco Catalyst 3850 Series Switches

  • Cisco Catalyst 9200 Series Switches

  • Cisco Catalyst 9300 Series Switches

  • Cisco Catalyst 9400 Series Switches

  • Cisco Catalyst 9500 Series Switches

  • Cisco Catalyst IE 3200, 3300, 3400 Rugged Series

  • Cisco Embedded Services 3300 Series Switches

  • Cisco IR1101 Integrated Services Router Rugged

  • Cisco Network Convergence System 4200 Series

  • Cisco Network Convergence System 520 Series

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