let squid to request the page using client IP?

[Mark jensen <ngiw2012@xxxxxxxxxxx>]

I have asked this question on Apache mailing list but they tell me to ask it here:

we know that we can allow some IPS with out authentication using Allow from IP:
 
<Directory /var/www/html/template>
      Order allow,deny
      Allow from 192.168.1.5
      Satisfy any
      AuthName "LDAP Authentication"
      AuthType Basic
 
      AuthBasicProvider ldap
      AuthzLDAPauthoritative off
      AuthLDAPURL ldap://192.168.1.3/dc=example,dc=com?uid?sub?(objectClass=*)
</Directory>
 
But what if we use proxy (squid) in front, then the source IP will be the proxy IP, How can I make Apache to deal with the client IP not the proxy IP?

or How to let squid to request the page using client IP?