All visitors show up as 127.0.0.1
On the popular free web hosting provider f2s.com, all visitors show up as coming from "127.0.0.1".
This happens because f2s.com uses a non-standard network configuration. The problem can easily be worked around be edting the "ax.pl"/"ax.cgi" script and replacing all instances of REMOTE_ADDR and REMOTE_HOST with HTTP_X_FORWARDED_FOR (use a case-sensitive replacement). That should fix the problem.
"All visitors show up as 127.0.0.1"
http://www.xav.com/scripts/axs/help/1501.html