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  6. Does a Security Group Rule or Firewall Rule Immediately Take Effect for Its Original Traffic After Being Modified?

Does a Security Group Rule or Firewall Rule Immediately Take Effect for Its Original Traffic After Being Modified?

No. After a security group rule or firewall rule is modified, the new rule may not immediately take effect for its original traffic. Users need to interrupt the original traffic for about 120 seconds for the new rule to take effect for the traffic.