I have a webpage with PHP and im trying to get the client IP, but what I get is the server GATEWAY ip address (192.168.0.1). This is what I have at the office: ISP ---> ISP router ---> My router(192.168.0.1) ----> (192.168.0.2)My server. I tryed all this lines, but I wasnt able to get the real ip, only SERVER GATEWAY ip. $_SERVER['HTTP_X_FORWARDED_FOR'] $_SERVER['HTTP_CLIENT_IP'] $_SERVER['HTTP_X_REAL_IP'] $_SERVER['GATEWAY_INTERFACE'] $_SERVER['SERVER_ADDR'] $_SERVER['SERVER_NAME'] $_SERVER['SERVER_SOFTWARE'] $_SERVER['SERVER_PROTOCOL'] $_SERVER['REQUEST_METHOD'] $_SERVER['REQUEST_TIME'] $_SERVER['QUERY_STRING'] $_SERVER['DOCUMENT_ROOT'] $_SERVER['HTTP_ACCEPT'] $_SERVER['HTTP_ACCEPT_CHARSET'] $_SERVER['HTTP_ACCEPT_ENCODING'] $_SERVER['HTTP_ACCEPT_LANGUAGE'] $_SERVER['HTTP_CONNECTION'] $_SERVER['HTTP_HOST'] $_SERVER['HTTP_REFERER'] $_SERVER['HTTP_USER_AGENT'] $_SERVER['HTTPS'] $_SERVER['REMOTE_ADDR'] $_SERVER['REMOTE_HOST'] $_SERVER['REMOTE_PORT'] $_SERVER['SCRIPT_FILENAME'] $_SERVER['SERVER_ADMIN'] $_SERVER['SERVER_PORT'] $_SERVER['SERVER_SIGNATURE'] $_SERVER['PATH_TRANSLATED'] $_SERVER['SCRIPT_NAME'] $_SERVER['REQUEST_URI'] $_SERVER['PHP_AUTH_DIGEST'] $_SERVER['PHP_AUTH_USER'] $_SERVER['PHP_AUTH_PW'] $_SERVER['AUTH_TYPE'] The following variables are "undefined": -HTTP_X_FORWARDED_FOR -HTTP_CLIENT_IP -HTTP_X_REAL_IP -HTTPS -REMOTE_HOST -PATH_TRANSLATED -PHP_AUTH_DIGEST -PHP_AUTH_USER -PHP_AUTH_PW -AUTH_TYPE