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anubis-mirror/docs/docs/admin/environments/cloudflare.mdx

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# Cloudflare
If you are using Cloudflare, you should configure your server to use `CF-Connecting-IP` as the source of the real client IP, and pass that address to Anubis as `X-Forwarded-For`. Read [Client IP Headers](../caveats-xff.mdx) for details.
Example configuration with Caddy:
```Caddyfile
{
servers {
# Cloudflare IP ranges from https://www.cloudflare.com/en-gb/ips/
trusted_proxies static 173.245.48.0/20 103.21.244.0/22 103.22.200.0/22 103.31.4.0/22 141.101.64.0/18 108.162.192.0/18 190.93.240.0/20 188.114.96.0/20 197.234.240.0/22 198.41.128.0/17 162.158.0.0/15 104.16.0.0/13 104.24.0.0/14 172.64.0.0/13 131.0.72.0/22 2400:cb00::/32 2606:4700::/32 2803:f800::/32 2405:b500::/32 2405:8100::/32 2a06:98c0::/29 2c0f:f248::/32
# Use CF-Connecting-IP to determine the client IP instead of XFF
# https://caddyserver.com/docs/caddyfile/options#client-ip-headers
client_ip_headers CF-Connecting-IP
}
}
example.com {
reverse_proxy http://anubis:3000 {
# Pass the client IP read from CF-Connecting-IP
header_up X-Forwarded-For {client_ip}
header_up X-Real-IP {client_ip}
header_up X-Http-Version {http.request.proto}
}
}
```