Network requirements

If outbound traffic is blocked, open port 443 for the following addresses. These apply to every operating system, not only Windows.

IP addresses, domains and DNS names

IPv4

• 3.121.6.180

• 3.121.187.176

• 3.121.238.86

• 3.125.15.130

• 18.158.187.80

• 18.198.53.88

• 3.78.32.129

• 3.121.13.180

• 3.123.240.202

• 18.184.114.155

• 18.194.8.224

• 35.156.219.65

• 3.69.184.79

• 3.76.143.53

• 3.77.82.22

• 18.197.35.253

• 3.122.135.178

• 18.194.222.197

IPv6

• 2a05:d014:45e:4e00::/56

Domains

• ts01-lanner-lion.cloudsink.net

• lfoup01-lanner-lion.cloudsink.net

• lfodown01-lanner-lion.cloudsink.net

Public DNS

• https://falcon.eu-1.crowdstrike.com

• https://assets.falcon.eu-1.crowdstrike.com

• https://assets-public.falcon.eu-1.crowdstrike.com

No inbound ports are required. All communication is outbound to CrowdStrike.