Got it

Reflective ACL configuration on S series switch

Latest reply: Apr 14, 2017 11:26:03 1241 1 0 0 0
Reflective ACL configuration on S series switch.
  • x
  • convention:

Created Apr 14, 2017 11:26:03

On an S series switch, except S1700:

Reflective ACL is a type of dynamic ACL. It controls user access according to the upper-layer session information in IP packets to prevent hosts on the public network from connecting to the private network unless users on the private network connect to the public network first. In this way, the reflective ACL protects the private network of an enterprise against attacks from unauthorized external users.

For example, GE2/0/1 on a switch connects to the Internet. The reflective ACL is configured on GE 2/0/1 in the outbound direction to prevent the server on the Internet from accessing hosts on the internal network unless the internal hosts access the server first. The configurations are as follows:

[HUAWEI] acl 3000
[HUAWEI-acl-adv-3000] rule permit udp
[HUAWEI-acl-adv-3000] quit
[HUAWEI] interface gigabitethernet 2/0/1
[HUAWEI-GigabitEthernet2/0/1] traffic-reflect outbound acl 3000 timeout 600  //Configure reflective ACL on GE2/0/1 to match UDP packets and set the aging time.
[HUAWEI-GigabitEthernet2/0/1] quit
[HUAWEI] traffic-reflect timeout 900  //Set the global aging time for reflective ACL.

Run the display traffic-reflect command in the system view to view the reflective ACL information.
View more
  • x
  • convention:


You need to log in to comment to the post Login | Register

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " User Agreement."

My Followers

Login and enjoy all the member benefits


Are you sure to block this user?
Users on your blacklist cannot comment on your post,cannot mention you, cannot send you private messages.
Please bind your phone number to obtain invitation bonus.