Server being flooded

Hi there,
I have noticed that out of no where my server is getting a huge amount of traffic. I have about 23 requests per second. This is basically using up my entire bandwidth which is making it very slow to access. I have no idea why there is such a huge amount. I believe I am being targeted. My access log gives me the following:
405 -
174.133.15.50 - - [25/Jul/2009:18:16:12 +0200] "GET http://hydral.ru/rukavadin_1sn,2sn HTTP/1.1" 200 67224
174.133.211.122 - - [25/Jul/2009:18:16:10 +0200] "GET http://www.justia.pro HTTP/1.1" 200 13849
174.133.15.50 - - [25/Jul/2009:18:16:13 +0200] "GET http://personalcards.ca/2009/07/04/ HTTP/1.1" 200 25471
174.120.24.242 - - [25/Jul/2009:18:16:13 +0200] "GET http://lavaligeria.com/punti-vendita.asp HTTP/1.1" 200 16237
174.133.15.50 - - [25/Jul/2009:18:16:14 +0200] "GET http://www.173zhai.com/member.php?type=my&action=collection&job=add&tid=17 HTTP/1.1" 302 -
174.133.15.50 - - [25/Jul/2009:18:16:14 +0200] "GET http://www.creativeimagecollections.com/blog/weddings/stephanie-and-chrisjune-9- 2007.html/comment-page-1#comment-1686 HTTP/1.1" 404 5535
174.120.24.242 - - [25/Jul/2009:18:16:17 +0200] "GET http://birchwoodchem.co.uk/ HTTP/1.1" 200 3780
174.133.15.50 - - [25/Jul/2009:18:16:12 +0200] "POST http://contrestrike.ru/main/78-17-letnjaja-shvedka-kinula-obuchenie-radi-counter .html HTTP/1.1" 200 18970
::1 - - [25/Jul/2009:18:16:20 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.15.50 - - [25/Jul/2009:18:15:44 +0200] "GET http://car-sales-reviews.com/categories/12-Car-Care HTTP/1.1" 200 88067
174.133.211.122 - - [25/Jul/2009:18:15:53 +0200] "GET http://cleveland-wrongfuldeathlawyer.info/ChildDeath_WrongfulDeath.html HTTP/1.1" 200 55753
174.133.15.50 - - [25/Jul/2009:18:16:16 +0200] "GET http://www.handcircus.com/2008/12/10/rolando-trailer-escape-from-rolando-central HTTP/1.1" 302 -
::1 - - [25/Jul/2009:18:16:21 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.15.50 - - [25/Jul/2009:18:15:44 +0200] "GET http://gourmet-food-kitchen.com/function.mysql-select-db HTTP/1.1" 404 91171
174.133.177.66 - - [25/Jul/2009:18:16:17 +0200] "GET http://globalinfo.com.ua/novosti/253.html HTTP/1.1" 200 45341
::1 - - [25/Jul/2009:18:16:22 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.211.122 - - [25/Jul/2009:18:15:40 +0200] "GET http://illinois-wrongfuldeathlawyer.info/AutoAccidents_WrongfulDeath.html HTTP/1.1" 200 49601
174.120.24.242 - - [25/Jul/2009:18:15:46 +0200] "POST http://www.cincinnatibathremodeling.com/design-and-plans HTTP/1.1" 200 12149
::1 - - [25/Jul/2009:18:16:23 +0200] "OPTIONS * HTTP/1.0" 200 -
::1 - - [25/Jul/2009:18:16:24 +0200] "OPTIONS * HTTP/1.0" 200 -
174.120.24.242 - - [25/Jul/2009:18:16:23 +0200] "GET http://www.the-organizing-boutique.com/ HTTP/1.1" 200 33724
174.133.211.122 - - [25/Jul/2009:18:16:21 +0200] "POST http://www.justia.pro/cgi-bin/filter.pl HTTP/1.1" 302 -
174.133.211.122 - - [25/Jul/2009:18:16:19 +0200] "POST http://interactivewoo.com/easy/blogging/blog-basics/#wpcf7-f4-w3-o1 HTTP/1.1" 404 23881
174.120.24.242 - - [25/Jul/2009:18:16:22 +0200] "GET http://www.nintharch.com/dedication/ HTTP/1.1" 200 16482
174.133.15.50 - - [25/Jul/2009:18:16:05 +0200] "GET http://ncuxo-logia.ru/2/2_2.php HTTP/1.1" 200 3989
174.133.15.50 - - [25/Jul/2009:18:16:24 +0200] "GET http://www.173zhai.com/login.php HTTP/1.1" 200 6364
174.120.24.242 - - [25/Jul/2009:18:16:26 +0200] "GET http://www.birchwoodchem.co.uk/index.htm HTTP/1.1" 200 3780
::1 - - [25/Jul/2009:18:16:28 +0200] "OPTIONS * HTTP/1.0" 200 -
174.120.24.242 - - [25/Jul/2009:18:16:23 +0200] "GET http://horstsergio.de/ich/content/view/30/129/ HTTP/1.1" 200 25982
::1 - - [25/Jul/2009:18:16:29 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.177.66 - - [25/Jul/2009:18:13:08 +0200] "GET http://asbestosmesotheliomavermiculite.info/Mesothelioma-Medical/Mesothelioma_Cy stic.html HTTP/1.1" 502 1376
174.133.15.50 - - [25/Jul/2009:18:16:25 +0200] "GET http://personalcards.ca/2009/07/05/ HTTP/1.1" 200 25528
174.133.15.50 - - [25/Jul/2009:18:16:23 +0200] "GET http://www.handcircus.com/2008/12/10/rolando-trailer-escape-from-rolando-central / HTTP/1.1" 200 11915
174.120.24.242 - - [25/Jul/2009:18:16:26 +0200] "GET http://ibackthisup.com/campaign/islam HTTP/1.1" 200 30891
174.120.24.242 - - [25/Jul/2009:18:16:22 +0200] "GET http://lavaligeria.com/eventi-valigeria.asp HTTP/1.1" 200 15128
174.133.15.50 - - [25/Jul/2009:18:16:17 +0200] "GET http://www.handcircus.com/2008/06/28/rolando/comment-page-1/#comment-84427 HTTP/1.1" 404 8144
174.133.15.50 - - [25/Jul/2009:18:16:20 +0200] "GET http://ourkidsmatter.net/modules.php?name=Submit_News HTTP/1.1" 200 47974
174.133.15.50 - - [25/Jul/2009:18:16:29 +0200] "GET http://ncuxo-logia.ru/index.php HTTP/1.1" 200 3344
174.133.15.50 - - [25/Jul/2009:18:16:26 +0200] "GET http://contrestrike.ru/main/78-17-letnjaja-shvedka-kinula-obuchenie-radi-counter .html HTTP/1.1" 200 45768
174.120.24.242 - - [25/Jul/2009:18:16:30 +0200] "GET http://www.the-organizing-boutique.com/getting-organized.html HTTP/1.1" 200 28482
174.120.24.242 - - [25/Jul/2009:18:16:30 +0200] "GET http://www.birchwoodchem.co.uk/company.htm HTTP/1.1" 200 3800
::1 - - [25/Jul/2009:18:16:32 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.211.122 - - [25/Jul/2009:18:15:40 +0200] "POST http://norfolkspiritguide.co.uk/dir.aspx?p=71 HTTP/1.1" 200 20574
174.133.15.50 - - [25/Jul/2009:18:16:16 +0200] "GET http://realvana.com/cant-find-your-location.html HTTP/1.1" 200 11441
::1 - - [25/Jul/2009:18:16:33 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.211.122 - - [25/Jul/2009:18:15:51 +0200] "GET http://irving-wrongfuldeathlawyer.info/AirplaneCrashLawyer.html HTTP/1.1" 502 1323
174.120.24.242 - - [25/Jul/2009:18:16:27 +0200] "GET http://dit2o.com/portal/?page_id=34 HTTP/1.1" 200 11160
174.133.211.122 - - [25/Jul/2009:18:16:27 +0200] "GET http://marketing.justia.com/contact-error.html?error=missing HTTP/1.1" 200 14542
::1 - - [25/Jul/2009:18:16:34 +0200] "OPTIONS * HTTP/1.0" 200 -
::1 - - [25/Jul/2009:18:16:35 +0200] "OPTIONS * HTTP/1.0" 200 -
174.120.24.242 - - [25/Jul/2009:18:16:34 +0200] "GET http://www.birchwoodchem.co.uk/toiletries_cosmetics.htm HTTP/1.1" 200 4501
174.133.15.50 - - [25/Jul/2009:18:16:34 +0200] "POST http://www.handcircus.com/wp-comments-post.php HTTP/1.1" 302 -
174.133.15.50 - - [25/Jul/2009:18:16:34 +0200] "GET http://exe-wmr.info/articx/articx/ HTTP/1.1" 404 212
174.133.15.50 - - [25/Jul/2009:18:16:32 +0200] "GET http://www.173zhai.com/member.php?type=my&action=friend&job=add&uid=1 HTTP/1.1" 302 -
174.120.24.242 - - [25/Jul/2009:18:16:33 +0200] "GET http://lavaligeria.com/sitemap.html HTTP/1.1" 200 13407
174.120.24.242 - - [25/Jul/2009:18:16:33 +0200] "GET http://www.nintharch.com/2008/08/18/how-to-run-a-meeting/ HTTP/1.1" 200 23866
174.133.15.50 - - [25/Jul/2009:18:16:33 +0200] "GET http://hydral.ru/rukavadin_4sp,4sh HTTP/1.1" 200 52722
174.120.24.242 - - [25/Jul/2009:18:16:36 +0200] "GET http://ibackthisup.com/site/home HTTP/1.1" 200 9856
74.52.177.210 - - [25/Jul/2009:18:16:38 +0200] "POST http://cpanel.sslpayments.com/info.php HTTP/1.1" 200 1115
174.133.15.50 - - [25/Jul/2009:18:16:35 +0200] "GET http://realvana.com/california/los-angeles/pasadena/coffee/bamboo-tea-house.html HTTP/1.1" 200 31870
174.133.211.122 - - [25/Jul/2009:18:16:36 +0200] "GET http://marketing.justia.com/contact-error.html?error=missing HTTP/1.1" 200 14542
174.120.24.242 - - [25/Jul/2009:18:16:37 +0200] "GET http://dit2o.com/portal/?page_id=35 HTTP/1.1" 200 11115
174.120.24.242 - - [25/Jul/2009:18:16:38 +0200] "GET http://www.the-organizing-boutique.com/clutter-control.html HTTP/1.1" 200 26192
174.133.15.50 - - [25/Jul/2009:18:16:37 +0200] "GET http://www.handcircus.com/2008/12/10/rolando-trailer-escape-from-rolando-central /comment-page-1/#comment-84432 HTTP/1.1" 404 8144
174.133.177.66 - - [25/Jul/2009:18:16:27 +0200] "GET http://globalinfo.com.ua/novosti/252.html HTTP/1.1" 200 41624
174.133.15.50 - - [25/Jul/2009:18:16:39 +0200] "GET http://exe-wmr.info/articx/liex/ HTTP/1.1" 404 210
174.133.211.122 - - [25/Jul/2009:18:16:18 +0200] "GET http://chesapeake-wrongfuldeathlawyer.info/BirthInjury_WrongfulDeath.html HTTP/1.1" 200 60229
174.133.15.50 - - [25/Jul/2009:18:16:39 +0200] "GET http://www.173zhai.com/login.php HTTP/1.1" 200 6364
174.133.211.122 - - [25/Jul/2009:18:16:42 +0200] "POST http://cpanel.sslpayments.com/info.php HTTP/1.1" 200 1115
174.120.24.242 - - [25/Jul/2009:18:16:40 +0200] "GET http://www.birchwoodchem.co.uk/pharmaceuticals.htm HTTP/1.1" 200 4798
174.133.15.50 - - [25/Jul/2009:18:16:42 +0200] "GET http://www.slevy.biz%0D%0A/click.php?nameodkaz=www.SLUNEcNi-BRyLE.com&idlink=89 HTTP/1.1" 502 1362
174.120.24.242 - - [25/Jul/2009:18:16:40 +0200] "GET http://lavaligeria.com/iscriviti.asp HTTP/1.1" 200 20178
::1 - - [25/Jul/2009:18:16:45 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.15.50 - - [25/Jul/2009:18:16:33 +0200] "GET http://ncuxo-logia.ru/sitemap/index.php HTTP/1.1" 200 13705
174.133.15.50 - - [25/Jul/2009:18:16:40 +0200] "GET http://personalcards.ca/2009/07/06/ HTTP/1.1" 200 25550
174.133.15.50 - - [25/Jul/2009:18:16:35 +0200] "POST http://ourkidsmatter.net/modules.php?name=Submit_News HTTP/1.1" 200 48795
::1 - - [25/Jul/2009:18:16:46 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.15.50 - - [25/Jul/2009:18:16:42 +0200] "GET http://contrestrike.ru/main/ HTTP/1.1" 200 26250
::1 - - [25/Jul/2009:18:16:47 +0200] "OPTIONS * HTTP/1.0" 200 -
174.133.211.122 - - [25/Jul/2009:18:16:44 +0200] "GET http://www.justia.pro HTTP/1.1" 200 13849
174.120.24.242 - - [25/Jul/2009:18:16:43 +0200] "GET http://ibackthisup.com/site/createpetition HTTP/1.1" 200 41063
::1 - - [25/Jul/2009:18:16:48 +0200] "OPTIONS * HTTP/1.0" 200 -
174.120.24.242 - - [25/Jul/2009:18:16:47 +0200] "GET http://www.the-organizing-boutique.com/home-organization.html HTTP/1.1" 200 35580
174.133.211.122 - - [25/Jul/2009:18:15:34 +0200] "GET http://dayton-wrongfuldeathlawyer.info/WrongfulDeathNews.html HTTP/1.1" 404 -
174.133.15.50 - - [25/Jul/2009:18:16:38 +0200] "GET http://kibergrad.com?do=dnl&id=5682a53153296e01ff6bd4e453759b37 HTTP/1.1" 200 225
174.120.24.242 - - [25/Jul/2009:18:16:48 +0200] "GET http://www.birchwoodchem.co.uk/biocides.htm HTTP/1.1" 200 4875
174.120.24.242 - - [25/Jul/2009:18:16:42 +0200] "GET http://www.nintharch.com/author/adoniram/ HTTP/1.1" 200 15802
::1 - - [25/Jul/2009:18:16:50 +0200] "OPTIONS * HTTP/1.0" 200 -
What on earth is going on?
Thanks

Those IPs are from a netblock at ThePlanet webhosting service. They have a few compromised machines/sites there. Contact their reps at '[email protected]' send them the IPs and one line of the log for each offending IP. Make your e-mail short, to the point, and polite.
The 'GET' requests that are in the log indicate that your server is indeed an open proxy. Disconnect it from the network until you can secure the server's configuration. Using Server Admin, stop the 'Web' service. Then select 'Your Server'->Web->Settings->Proxy and uncheck the 'Enable Forward Proxy' and 'Control Access To Proxy' checkboxes. Under 'Your Server'->Web->Settings->Modules' uncheck the 'proxy_module' -if you have no need to proxy requests to other servers on your network. Then save the settings. Restart the 'Web' service.
If the above is already the configuration on the server, you may have a situation where the server has been 'rooted' and your solution would be to reinstall the OS to eliminate any compromised code.

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