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Apache Slot Limit
| Posted by Ibrahim6oct, 11-25-2008, 04:41 PM | | Apache Slot Limit
Hi,
I'm facing a very critical issue in my server and i think its kind of DDOS attack!
the server is running normal and then i noticed that the server load is going up till reaches about 400!! and all the services went down!
the cause of this issue was the Apache...
I noticed that the normal SLOT ( Total megabytes transferred this slot ) is in the range between 0.1 and 0.5(max) but the upnormal when the server load went up each slot was in range between (150 : 200) !!!
my conclusion is that someone sending a large packets to the server...
is there a limitation for this slot for not going up in that way?
Server Version: Apache/2.2.9 (Unix) mod_ssl/2.2.9 OpenSSL/0.9.8b mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.6
Regards,
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| Posted by Ibrahim6oct, 11-25-2008, 06:58 PM | | now am receiving a DDOS attack in a specific directory in one of my hosted sites, its a forum and the directory is for images
Code:
rv PID Acc M CPU SS Req Conn Child Slot Client VHost Request
0-0 26992 1/1/889 K 0.00 2 1 0.1 0.00 2.10 41.233.40.54 arabhardware.net GET /forum/images/arbhrd/index_12.gif HTTP/1.1
1-0 17699 1/293/965 W 4.63 0 0 1.7 9.11 11.54 94.96.131.63 arabhardware.net GET /forum/clientscript/yui/connection/connection-min.js?v=373
2-0 26657 73/73/877 K 0.40 2 4 0.0 0.00 2.77 41.236.200.236 arabhardware.net GET /forum/images/arbhrd/index_23.gif HTTP/1.1
3-0 20067 44/236/760 K 3.15 0 0 0.0 1.75 6.43 217.52.49.136 arabhardware.net GET /forum/images/arbhrd/misc/harddisk.gif HTTP/1.1
4-0 27081 1/1/905 K 0.00 1 1 1.0 0.00 2.48 41.233.40.54 arabhardware.net GET /forum/images/arbhrd/misc/navbits_start.gif HTTP/1.1
5-0 27082 1/1/718 K 0.23 0 1527 0.0 0.00 2.93 80.90.174.236 arabhardware.net GET /forum/index.php HTTP/1.1
6-0 27515 2/2/797 K 0.00 0 0 0.0 0.00 2.11 41.235.204.127 arabhardware.net GET /forum/images/arbhrd/index_18.gif HTTP/1.1
8-0 27519 1/1/979 K 0.00 1 2 0.0 0.00 2.08 41.234.131.39 arabhardware.net GET /mgtemplates/system/css/general.css HTTP/1.1
9-0 26669 1/5/735 K 0.50 3 2085 19.3 0.05 3.91 41.178.101.70 animalsfanclub.com GET /forumdisplay.php?f=34
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