How to prevent "proxy" usage?

[Sonixxfx <sonixxfx@xxxxxxxxx>]

Hi,

From what I understand from my logs some people seem to use my Apache install as a proxy server or something like that. I am looking for a solution to prevent that. I hope someone can help me out.


Lines like this one appear in my logs once in a while:

111.222.333.444 - - [08/May/2007:10:34:31 +0200] "GET http://somewebsite.com/ HTTP/1.1" 200 6751 "-" "Mozilla/5.0 (compatible; MSIE 
5.01; Win2000)"

(somewebsite.com is not my website)



---------------------------------------------

I am using apache 2.2.4 from 
apache.org. The installed modules are:

core.c
mod_authz_host.c
mod_log_config.c
prefork.c
http_core.c
mod_mime.c
mod_dir.c

---------------------------------------------

This is my config:

# ==============================

===================
# Basic settings
# =================================================
Listen 0.0.0.0:80
User apache
Group apache
ServerAdmin sonixxfx@xxxxxxxxx
UseCanonicalName Off
ServerSignature Off
HostnameLookups Off
ServerTokens Prod
ServerRoot "/usr/local/apache2"
DocumentRoot "/www/mywebsite"
PidFile /usr/local/apache2/logs/httpd.pid
ScoreBoardFile /usr/local/apache2/logs/httpd.scoreboard
<IfModule mod_dir.c>
   DirectoryIndex index.html
</IfModule>
# =================================================
# HTTP and performance settings
# =================================================
Timeout 300
KeepAlive On
MaxKeepAliveRequests 100
KeepAliveTimeout 15
<IfModule prefork.c>
   MinSpareServers 5
   MaxSpareServers 10
   StartServers 5
   MaxClients 150
   MaxRequestsPerChild 0
</IfModule>
# =================================================
# Access control
# =================================================
<Directory />
Options None
   AllowOverride None
   Order deny,allow
   Deny from all
</Directory>
<Directory "/www/mywebsite">
   Order allow,deny
   Allow from all
</Directory>
# =================================================
# MIME encoding
# =================================================
<IfModule mod_mime.c>
   TypesConfig /usr/local/apache2/conf/mime .types
</IfModule>
DefaultType text/plain
<IfModule mod_mime.c>
   AddEncoding x-compress .Z
   AddEncoding x-gzip .gz .tgz
   AddType application/x-compress .Z
   AddType application/x-gzip .gz .tgz
   AddType application/x-tar .tgz
</IfModule>
# =================================================
# Logs
# =================================================
LogLevel warn
LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined
LogFormat "%h %l %u %t \"%r\" %>s %b" common
LogFormat "%{Referer}i -> %U" referer
LogFormat "%{User-agent}i" agent
ErrorLog /usr/local/apache2/logs/error_log
CustomLog /usr/local/apache2/logs/access_log combined
# =================================================
# Virtual hosts
# =================================================
NameVirtualHost *:80
<VirtualHost *:80>
   DocumentRoot "/www/mywebsite"
   ServerName "mywebsite"
   ErrorLog logs/mywebsite/error_log
   CustomLog logs/mywebsite/access_log combined
</VirtualHost>


Thanks for your help.

Regards,

Ben