How to block traffic from Specific subnets on Huawei switch 6720s?

Created Apr 09, 2019 21:14:14Latest reply Apr 10, 2019 16:39:51 151 6 0 0
  Rewarded E Coins: 0 (problem resolved)

We are getting DDOSattack from 2 internet pools for our source IP addresses we want to block traffic from these destination subnets on our Huawei switch 6720s. we want apply extended ACL on at our internet transit to block DDOS at transit circuits. 


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Popeye_Wang  Moderator   Created Apr 09, 2019 21:29:59 Helpful(0) Helpful(0)

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Popeye_Wang  Moderator   Created Apr 09, 2019 21:15:37 Helpful(0) Helpful(0)

What type of DDOS attack are you facing, udp-flood or syn-flood?
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Steelblue     Created Apr 09, 2019 21:25:23 Helpful(0) Helpful(0)

Posted by Popeye_Wang at 2019-04-09 21:15 What type of DDOS attack are you facing, udp-flood or syn-flood?
It seems udp-flood attack
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Steelblue     Created Apr 09, 2019 21:26:53 Helpful(0) Helpful(0)

Looking forward to your reply
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Popeye_Wang  Moderator   Created Apr 09, 2019 21:30:04 Helpful(0) Helpful(0)

we only can mitigate this by switch but cannot stop it, adjust the threshold value

anti-attack fragment car cir 15000                                             
anti-attack tcp-syn car cir 15000                                              
anti-attack icmp-flood car cir 15000
 

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Mohamed_Mostafa  Novice   Created Apr 10, 2019 16:39:51 Helpful(0) Helpful(0)

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Network & Security Engineer

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