How to get client browser's ip address

[Eqbal Z]

Hi,

How do I get a client browser's ip address that is accessing a JSP page?

 

[Luca Paganelli]

I don't have the documentation at hand actually
but I remember there's a method of HttpServletRequest
like getRemoteHost().

So from your JSP page you can simply call

request.getRemoteHost()

as "request" object is automatically given by J2EE framework!

 

[Grant Wagner]

I don't have the documentation at hand actually
but I remember there's a method of HttpServletRequest
like getRemoteHost().

So from your JSP page you can simply call
as "request" object is automatically given by J2EE framework!

Nitpick: that does _not_ give you the IP address of "client's
browser", since the client's browser has no IP address associated
with it.

More to the point: It does _not_ give you the IP address of the
"user agent's host connecting to the server for that request". It
gives you the IP address of the "host connecting to the server
for that request". Sometimes those two values (the IP address of
the user agent's host and the host connecting to the server) are
the same. Very often they are not.

You will not be able to uniquely identify the IP address of any
user agent's host if that user agent is visiting your server
through a proxy, or from behind NAT.

When I connect to a Web site from home, REMOTE_ADDR does not
report the IP address of the host running my user agent
(192.168.0.192), nor does it show the external IP address
assigned by my ISP. When I connect to a Web site from home,
REMOTE_ADDR returns my ISP's proxy server.

 

[Roedy Green]

Nitpick: that does _not_ give you the IP address of "client's
browser", since the client's browser has no IP address associated
with it.

see http://mindprod.com/jgloss/ip.html
on how to get a face ip vs the machine ip.