Protecting From DDoS Attacks
Mar 31, 2009
This is a quote from an unrelated thread in the Dedicated Server Forum, I didnt want to hijack the thread so thought I would bring my question over here:
Quote:
Originally Posted by HRDev Hady
I believe they use BurstNet, which isn't really a good choice for DDoS-prone sites as their Top Layer devices don't seem to handle attacks very well in my opinion. If you're running a DDoS prone site, you'd likely be better off with a DDoS-specialized provider such as Awknet, Staminus, or Black Lotus. But as mentioned, a lot of attacks can be stopped simply by proper tuning of your IP stack and some simple firewall rules.
My question is as a new Dedicated Server Owner what tuning and rules do I need to implement in order to protect me from these "small scale DDoS Attacks"?
I do not run a DDoS prone site(i hope not lol) but I want to secure myself as much as possible and have a headache free run other than the headaches I cause myself of course.
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Sep 9, 2008
I am looking to backup client data to a second hard drive on the server. I was wondering if there is any way to protect this data from virus's or any other software attack that may compromise the server data.
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Mar 9, 2008
I have a VPS that's on the awknet network and I'm receiving DNS DDoS and I don't think they have anything to stop these attacks, how can I prevent these?
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Jun 25, 2008
one of my costumers server is getting ddos attacks. I solved syn and get attacks with litespeed web server but I have another problem. They started to do udp flood. I m losing connection to my server. I bought new server with 1 gbit port for solving it.
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Aug 3, 2009
I want to understand the mechanics of a DDOS attack. I have been doing a lot of reading about them this weekend.
The way I am understanding it, a DDOS attack is done at the network level. It may be requesting that pages from a given website, or websites, are served up, but it basically will effect the entire network. So if 'page display' requests are made to a website(s) that is hosted at ABC Hosting (example only), to the tune of 15GBs then I have to assume that the network will be terribly degraded. If that is so, wouldn't other servers also get taken out?
I believe the architecture of the internet is something like this (example only):
Gnax --> Planet, SoftLayer, RackSpace, etc.. --> Reseller --> Smaller Reseller --> Me
If that is true, is each level along that route using their own networking system or are they all dependent on ones that major Data Center uses?
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Jan 12, 2009
My current site has been taken offline since it was being ddos attacked, been with my current hosters for 3years at least, but with recent events they gave me the option to shift my site to a dedicated server or me to move of bascially. (impression I get now, since they seem to be taking longer to reply to my messages) I was being ddos attacked since I refused to give a copy of me software to the visitor at my forums/site.
ive been looking round site after site and I cant make up my mind who to shift too, also if that same idiot who ddos attacked me does it again before I can take any action, I would be in the same situation again.
I have multiple domains and all my sites in total are about 5gig in size, cpu usage is avergae and queries roughly about 15/17 the most, I currently pay £130.00 a yr
I have had few bad experiences with hosting companies but learnt along the way, and assumed my current hosters would be a reliable place to stay at. My sites been offline since friday and I would like to get it back up again asap. Last thing I want to do is rush into a hosting package and be stuck in a dud situation.
I would also like to take action upon the person who has been ddos attacking me, I managed to get hold of his details and I also have confirmation that they are correct, what can be done legally?
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Mar 23, 2009
My sites are getting heavy DDoS attacks.
What's the best firewall? I'm currently using ACH software firewall but the attacks are getting so bad my site's are going down (apache is shutting down/locking) and sometimes my server even crashes.
Anyone recommend a better software firewall or a really cheap but good hardware firewall?
Could my host just use a router or something as the firewall or would that not do? I'm looking for something really affordable as a solution.
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Mar 14, 2008
Some of my websites have been under a DDOS attack for about a month now. Is there any way I can find who is behind this attack and what their motive is?
How much does it cost to launch a DDOS attack and how long do they usually last?
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Aug 22, 2008
i have a shared host
my site under ddos attacks!
i want to upgrade to Dedicated Server
i needed to Dedicated Server contains DDOS protection!
btw: Site visitors 2500 in day!
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Nov 24, 2008
how to prevent my web servers from DoS attacks?
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Jan 24, 2007
I know there is no device can protect you from ddos attacks, but I wonder which one is the best to help you reduce the attacks? It might be intelligent to "feel" the attacks? Brand names from Cisco, Foundry, Nokia...?
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Mar 18, 2008
As many of you already know, not everyone has the money to spend on physical firewalls, for example a cisco firewall. I would like if everyone could share little tips and tricks towards securing a server they learned over time. Nothing in big detail. I thought if we all share our ideas, it would help quite alot of other people. For example, here is a good layout I believe. Please note this is towards a game server setup.
Shorewall Firewall - Block Unneeded Ports + Block Ping
Apache Web server - Installed with "mod_security"
SSH-Faker - Stop thoes bots from trying to gain access to SSH (Guessing Passwords)
DDoS Deflate - For me, does not really work. (I know, mainly for port 80 so webhosting) But still have it installed.
Bash Scripts Monitoring # of connections per ip with Netstat.
PSad - Monitoring and Reporting Port Scans (Optional automatic timed block)
VNStat - Monitor Current/Monthly/Yearly Bandwidth (Does not hog resources)
I'm guarenteed to of left alot out than just the above. If some of you could also share some simple things you do for securing a server, would be great.
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Nov 24, 2008
Hosting providers and DDoS attacks!
Hello guys! I am looking for a reliable hosting provider! I mean the most important thing for me know is to be sure that my future hosting company will manage to protect my websites against DDoS attacks fully! What hosting company according to your opinion can be considered as the most stable hosting solution against DDoS attacs?
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Apr 2, 2009
How does Hivelocity deal with DDos Attacks?
Do they have any similar protection to ThePlanet or Softlayer?
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Jul 23, 2009
I believe that my site is being DDoSed against, and I'm wondering how I can prevent this from happening.
I'm running CentOS 5.3.
Are there any server side scripts of PHP scripts that could be used to dynamically block out IP's that are consuming too many resources on the VPS?
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Jun 12, 2009
Let's say my site was getting DDOS'd. Let's say I suspected I knew the attacker's home IP address. Would there be anything I could do with this information to either end the attacks or penalize the attacker?
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Jan 12, 2008
Can you restart the httpd to get the server online again while you are under an DDoS attack?
The reason for asking is that I was told that when restarting the httpd it should start to work again instantly, and so it seems.
But why? doesnt the attack "continue" after the restart?
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May 19, 2009
My host tells me that they have security to stop DDoS attacks and stuff, however today my server load jumped to 17.12 and my site went down giving me a "Network Timeout" error.
My host tells me it's my fault that I am using too many resources. The MOST my site has been on load is 3.06 and that was around lunch time a few weeks back. It's 11:43 and the server load is 17.12? I think my host is pulling my leg. I have not added ANYTHING new to my site and have not changed anything in 3 days. The load has been fine till today.
I use In Motion Hosting.
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Apr 21, 2008
I am about to get dedicated server with Gigenet.com.
Is this company good as they say they are?
How stable is it?
Can they really handle multi gig DDOS attacks?
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May 21, 2007
One of the sites I run is a forum with a political component, and 4-5 times over the last week we've been seeing DoS attacks. They're not terribly sophisticated -- generally 1-3 compromised servers throwing packets my way -- but they're enough to clog my pipes and take my sites down.
What I'd like to do is put a new server up at a data center that's D(D)oS aware that can hopefully respond to these attacks automatically. My current provider has been giving solid support, but the best they can do is null route the affected IP, rather than filtering the incoming attack.
Can y'all name a few providers I should look into? Right now I'm just looking to move 1 box (or maybe a box and a firewall depending on the setup).
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Dec 26, 2008
Can someone please recommend a hosting company that offers 24 hours toll free phone support with very good DDOS protection services?
Our server has been attacked for the past couple weeks and current host can just null route the IP being attacked but cannot offer anything beyond that...which does not help us. We are talking about large 3 GBPS attacks.
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Jan 29, 2008
I was on my visitors on AWstats, and when looking up most of the top IPs (the ones that viewed the most pages), most of them were associated with IANA, and tagged as spam/hacker IPs.
Of course, I've blocked all of those IPs with my .htaccess file, but how can I further protect my server from such threats? How can I rid my server of these spammers/hackers?
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May 23, 2008
how do i protect a file directory from be accessed view a web browser but still allowing scripts like flash to access it?
i have a folder with xml files in it and i don't want a user pulling them up via there webbrowser.
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Mar 14, 2008
My company provides various reports and dynamic website content to clients whose websites we design and host as well as to clients who have their sites designed and hosted elsewhere. We do not want people to be able to easily link to our content or bring it up in an iframe or whatever unless they are a paid subscriber. We would like to be able to limit the content to the domains of paying clients and keep it from displaying elsewhere. Note also that out of several reports, publications and content we offer, clients can mix and match, subscribe to just one element or all of them (The subscription levels are managed by us on the back end.)
Currently we have a system that is built in Perl/Postgres SQL and it is problematic(constantly failing and not very secure) Also it requires that the content be loaded into an iframe on the client's site or linked directly. We would like a solution that is PHP-based and can talk to our existing database. We would also like to be able to display the content on the page without an iframe so it is more search engine friendly, etc.
An off-the-shelf solution would be preferable if one is available - and we like to support the open source community.
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Jun 2, 2009
Is there any good way to be able to put an e-mail address on one's own Web site, without making it an image, and keep it from harvesting bots?
I found this site: [url] and was wondering if it's valid and workable.
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Oct 15, 2009
I was curious to know if there's a way to protect memory for certain programs. I have a VPS that is fairly light on memory, and there's been a few occasions when a program/bug will go wild and eat up all the memory locking me out of ssh/webmin.
Is there any way I can protect certain memory for certain processes/programs. Ideally I'd like some way for ssh to stay up in all situations.
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Aug 10, 2008
I had no problems protecting my webpages hosted by Yahoo, but cannot figure it out for Go Daddy. I'm using Hosting Configuration 1.0. Can anyone help?
My .htaccess and .htpasswd looks good to me, but still the webpages are not protected.
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Jan 22, 2008
how to protect My datas about domains in My bind, when using command
a@r:~$host -l -t any example.com?
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Jun 21, 2015
I am seeing some some some strange behaviour when password protecting directories served by nginx and PHP-FPM. If I have a site set up so that 'Process PHP by nginx' is selected under ('Websites & Domains>Web Server Settings>nginx settings') and set up password protection ('Websites & Domains>Password-Protected Directories') PHP pages are still served without asking for a password.
If I untick 'Process PHP by nginx' the behaviour returns to normal and an attempt to any access files results in the password request.Is this behaviour by design? If so, it is not made clear when you set up the password protection that it will not apply to PHP pages if you have nginx process the PHP pages.
OS: CentOS 6.6 (Final)
Plesk version: 12.0.18 Update #51
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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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