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I need to whitelist an ip range for our load testing with Loadimpact. They have given us an ip list with ranges listed as:

54.80.0.0/13 (54.80.0.0 – 54.87.255.255) https://forums.aws.amazon.com/ann.jspa?annID=1701

I'm not sure what part of the ip there to specify in our cloudflare firewall rule list.

If I enter, e.g. 54.80.0.0/13

I get the error:

An IP range (CIDR) must be a /16 or /24

How can I whitelist these?

1 Answer 1

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Maybe LoadImpact thinks /13 is too big to whitelist. A work-around may be to whitelist the network in parts:

  • 54.80.0.0/16
  • 54.81.0.0/16
  • 54.82.0.0/16
  • 54.83.0.0/16
  • 54.84.0.0/16
  • 54.85.0.0/16
  • 54.86.0.0/16
  • 54.87.0.0/16

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