Browser 來源 IP 相關訊息

HTTP Header
HTTP_CLIENT_IP
HTTP_X_FORWARDED_FOR
HTTP_X_FORWARDED
HTTP_X_CLUSTER_CLIENT_IP
HTTP_FORWARDED_FOR
HTTP_FORWARDED
REMOTE_ADDR
HTTP_VIA

Proxy
REMOTE_ADDR: 最後一個代理伺服器 IP
HTTP_VIA: 代理伺服器 IP
HTTP_X_FORWARDED_FOR