Log actual client IPs

I'm looking for a convenient way to log actual client IPs instead of ISP
proxies' in my access_log files but I can't manage to find documentation.
I'm using Apache 1.3.23 under Redhat Linux.

I've read I can use a simple scripting language in httpd.conf so I can
create my own variable (let's say "real_ip") but I don't know how to
populate it. I don't even know whether there's any standard proxies follow
to name the HTTP header that contains client IPs. I know some proxies use
X-Forwarded-For (which, by the way, can even be a comma separated list!) but
other proxies seem to use Client-IP... A mess indeed.

I figure out it must be a common issue so there must be good articles about
it somewhere... I'd really appreciate any guidance. Thank you in advance,

Alvaro G. Vicario <alvaro.QUITAR_REMOVE RemoveThis @telecomputeronline.net> wrote:
 > I'm looking for a convenient way to log actual client IPs instead of ISP
 > proxies'

The point in having a proxy is that your Ip doesn't get past it. If you
really want to do such thing use a client-side scripting or programs
(ActiveX, Java Applets) that collect this kind of information and send
them back to you. Be aware that no system works everytime, especially
if the client is paranoid and does not allow this kind of things to work.

Davide<!-- ~MESSAGE_AFTER~ -->