Overview

Access Control List (ACL) filters enable you to control which routing updates or packets are permitted or denied in or out of a network. They are specifically used by network administrators to filter traffic and to provide extra security for their networks. These filters can be applied on routers (Cisco).

ACLs provide a powerful way to control traffic into and out of your network. This control can be as simple as permitting or denying network hosts or addresses. You can configure ACLs for all routed network protocols.

The most important reason to configure ACLs is to provide security for your network. However, ACLs can also be configured to control network traffic based on the TCP port being used. (Orbit-Computer Solutions)


Note: We highly recommend that the following are set in your Cisco router by your network or IT administrator, or another qualified professional.

Create Group

  • match access-group 2000
  • match access-group 2001
  • match access-group 2003

Add Rules To Group

  • access-list 2000 permit udp any any dscp ef
  • access-list 2001 permit udp any any dscp af31

  • access-list 2003 permit udp any 192.84.16.0 0.0.0.255
  • access-list 2003 permit udp any 192.84.18.0 0.0.0.255
  • access-list 2003 permit udp any 8.28.0.0 0.0.3.255

  • access-list 2003 permit udp 192.84.16.0 0.0.0.255 any
  • access-list 2003 permit udp 192.84.18.0 0.0.0.255 any
  • access-list 2003 permit udp 8.28.0.0 0.0.3.255 any

For more information, refer to How do I configure my router for 8x8 service?