caddy2 ip filter

Caddyfile

intranet.example.com {
  @ipfilter {
    not remote_ip 192.168.0.0/16
  }
  route @ipfilter {
    # redirect
    redir https://example.com/
    # or respond
    # respond "Access denied" 403 {
    #   close
    # }
  }
  reverse_proxy / https://intranet.lan
}