DDOS Prevention Options
Mar 23, 2009
My host has told me that my forum is coming under a DDOS attack. Once was on Friday March 20th and again today (monday march 23). Before those two, there are attacks almost every week, sometimes twice a week.
The host installed DoS-Deflate. It started blocking legitimate traffic and had to be removed.
The operating system is Linux CentOS, the forum software is VBulletin. The server is a VPS with 1 gig of memory.
Besides DoS-Deflate, what other options are out there?
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May 13, 2009
I have searched for prevention methods and explanations on what DoS's and DDoS's are capable of. I was hoping someone could shed some light on free alternatives that would help reduce these attacks or help to make me aware if one were to occur.
Linux Distro: CentOS 5.3
I am not running apache or any web related services on my machine.
I run a dedicated server for the sole purpose of hosting a few game servers. I have already contacted my provider and they offered a $599 /mo plan for prevention. This is unreasonable and I simply cannot afford it. I have been threatened with a DDoS because one of my administrators banned a player constantly creating drama, stress, and breaking rules.
I simply cannot afford a gigantic bandwidth bill and this scare tactic has made me a little weary. Is there anything I can do to reduce the damage?
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May 20, 2009
any experience with the DDoS prevention feature provided by SoftLayer?
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May 21, 2007
I have a VPS from hostforweb.com , and my vps every week under ddos attack and 80-150 connection login to apache...
how can i prevention from ddos attack?
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Jun 26, 2007
I've got a dedicated with Centos 4.x, WHM / Cpanel. I have problem when create new account, this is error:
Setting up Mail & Local Domains...localdomains...valiases ...vdomainaliases...vfilters......Done
Configuring DNS...Bind reconfiguring on server using rndc
Error reconfiguring bind on server: rndc: error: /etc/rndc.key:7: 'options' redefined near 'options'
rndc: could not load rndc configuration
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Apr 27, 2008
I would like to know what are the best ways in preventing a UDP D/DoS Attack. DDoS-Deflate and most programs like that are just for TCP connections, and most of the time only for port 80. What is the best option out there for protection (linux wise) for UDP attacks. I was using shorewall before but it did not do so well so I just switched now to CSF [url] with WebMin and seems to be working ok. Even though thoes are both firewalls, they seem to have some protection against UDP Attacks. Please note this is a server that just hosts some game servers, no webhosting. What would be my best option here?
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Jan 10, 2007
I have linux server and like to put somekind of DDOS prevention/protection... what kind of device do I need to purcahse to do this?
can anyone advise on this?
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Oct 27, 2008
Today my server was down cause it was overloaded and when i restart my server its running how to stop such problem in the future
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May 12, 2008
i am seeing a lot of Local file inclusion (LFI) and mysql injection attacks quite often directed to php scripts.
what is the way to prevent them? would installing mod_security to apache work?
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May 21, 2008
if anyone knows a script that is url rewrite mods that can fix this hotlink issue by having the link url change every 20 minute.
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Jun 4, 2008
one of my clients seems to be attracting unwanted attention, it seems as if bots or something along those lines are attempting to exploit my box, while they are unsuccessful it would seem. I was wdonering if there was a rule I could put in Mod_Security that would ban them for attempting to
GET "/awstatsf/logger.php?action=log&type=Hybrid&host=hacked101&"
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Dec 23, 2007
I recently initiated "Hot Link Prevention" on one of my web sites on my Dedicated server (via CPanel). It woks well in re-directing hotlinked images to a small image that says "Unauthorized Hotlink Image." This of course prevents other web sites from leaching my bandwidth. However, I have had a number of people complain that when they visit my forum, they don't get my site's images, but instead see the Unauthorized Hotlink Image. The common thread seems to be the people with the problem are using Security Software. In one case, a guy is using Norton Confidential. Another guy is using some Security software provided by his ISP. I'm guessing that this security software is somehow messing with the Referer in tehir browser and confusing my server into thinking the images are being hotlinked from some other site. Short of turning off Hot Link Prevention, does anyone have any suggestions to tell the folks...are there settings in their Security Software for example that will prevent the problem when they visit my site?
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Nov 7, 2008
it's come under my attention that dragonara.net has been ddosing me today since morning from the ip:
194.8.75.229
What's so ironic about it is that the ip is from a UK DDOS protection site so i'm expecting some email with their services in the next hour or so. Stay clear of them they are fakes and e-terrorists.
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Jan 13, 2009
This is more aimed at providers but do you allow partial upgrades on RAM/Disk/Bandwidth?
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On our more expensive brands we do allow partial upgrades
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Feb 7, 2009
I have a Windows VPS hosting account. Plesk control panel. I use PHP for my website. With this setup how can I Rewrite my url's from
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Jun 22, 2009
Am having a lot of this in my apache status in both, a dedicated server and a vps, i think is affecting our load,
example of just some of the ones that appear in the apache status (whm)
Code:
70-0 - 0/0/21 . 0.00 18726 0 0.0 0.00 0.17 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
71-0 - 0/0/33 . 0.00 18730 0 0.0 0.00 0.20 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
72-0 - 0/0/93 . 0.00 18731 0 0.0 0.00 0.83 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
73-0 - 0/0/17 . 0.00 18734 0 0.0 0.00 0.07 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
74-0 - 0/0/24 . 0.00 123794 0 0.0 0.00 0.13 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
75-0 - 0/0/30 . 0.08 123710 0 0.0 0.00 0.07 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
76-0 - 0/0/9 . 0.00 123783 0 0.0 0.00 0.03 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
77-0 - 0/0/10 . 0.01 123709 0 0.0 0.00 0.01 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
78-0 - 0/0/19 . 0.00 123748 232 0.0 0.00 0.17 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
79-0 - 0/0/129 . 0.00 123793 0 0.0 0.00 1.77 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
80-0 - 0/0/1 . 0.00 177694 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
81-0 - 0/0/1 . 0.00 177693 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
82-0 - 0/0/1 . 0.00 177692 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
83-0 - 0/0/3 . 0.07 177638 0 0.0 0.00 0.02 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
84-0 - 0/0/13 . 0.16 177609 0 0.0 0.00 0.03 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
85-0 - 0/0/1 . 0.00 177691 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
86-0 - 0/0/12 . 0.08 177616 0 0.0 0.00 0.01 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
87-0 - 0/0/3 . 0.00 177647 0 0.0 0.00 0.00 127.0.0.1 server.domain.com OPTIONS * HTTP/1.0
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Aug 21, 2008
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Nov 1, 2008
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3. Separate backup's server using cPanel's built in backup system.
4. r1soft or other commercial softwares?
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Jun 2, 2008
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Sep 25, 2007
Still considering co-location and have been for many months! One thing I'm now thinking of is firewalls. What firewalls are available to me, what functionality do they have? What kind of additional protection can they give against DDoS attacks?
I really have no idea where to go with hardware firewalls. The bandwidth going through the firewall on average would be no more than 10mbit/s. Perhaps 20 with growth!
how you went about setting up your colo space with firewall protection
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Sep 22, 2009
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VDSManager or VEportal ? (good optios&security&support&...)
XEN or OPENVZ ? (uutil now OPENVZ best for run static and dynamic site, but on xen can be run vpn & shoutcast & windows & linux & ...)
RAM GB ?
CPU ?
Hard ?
can i use load balancing for vps node ?
how many vps can be run on this node ?
Ex:
VDSmanager
XEN
Core2Quad Q9300
8 GB RAM
500 GB HDD
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Jan 17, 2007
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May 2, 2009
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Sep 30, 2008
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Nov 11, 2008
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Mar 26, 2008
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Originally this was all going to be hosted by Company A. This would keep it all nicely integrated.
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Can you give me the pros and cons of the following scenarios:
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Scenario B:
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Scenario C:
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