Hi
http://www.ddosattacks.biz/
http://www.neustar.biz/enterprise/ddos-protection
https://www.verisigninc.com/en_US/forms/ddosattackservice.xhtml
https://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/ddos/index.xhtml
http://www.incapsula.com/ddos/anti-ddos-protection
What can happen
http://www.zdnet.com/blog/btl/ddos-attack-on-ultradns-affects-amazon-com-salesforce-com-petco-com/15601
If you want a true built for enterprise host that actually has a perfect record and will care more than any other that I know of about security, up time and would you benefit yes you would fire host is the best they offer built-in DoS/DDoS mitigation
Use http://www.firehost.com/
2 answer your question about cloud flair I do not feel adding them will give you the same advantages as a enterprise level hosting company.
For instance I believe fire host to be the best let's say you think liquid Web managed dedicated with layer 7 DDoS protection is better.
Well that's up to you and me to make our decisions. Based on past history and our own opinions of the companies.
If you where to add CloudFlare
you would receive CloudFlare layer 7 DDoS protection only once you started paying $200 a month of free cloud for a service is not a system that will protect you against an attack
http://www.cloudflare.com/features-security
There content delivery network as they call it is simply a reverse proxy it's not what other people would call a true CDN once again the issues would be a large with the base plan http://www.cloudflare.com/features-cdn
Your so-called anti-cast DNS CloudFlare says is standard changes your IP address by definition any cast and DNS does not change your IP. There are some methods two get around this but it's not simple.
A $200 a month "CloudFlare Railgun
origin network optimizer"
http://www.cloudflare.com/railgun
Will do the same thing as any high end content delivery network as far as fixing the front end code edge cast will do that as will NetDNA, Akamai, numerous others so may I can't list them all.
Information on Akamai stopping attacks
http://www.akamai.com/html/awe/login.html?campaign_id=F-MC-14612&gclid=CMuZzLmju7kCFcFj7AodAXYA2A&curl=/dl/whitepapers/Akamai_Cloud_Based_Security.pdf
The unique thing is edge cast is very fast so is Akamai you can purchase a Akamai CDN from liquid Web for $120 a month with a terabyte of bandwidth that's a lot.
It will do more than the CloudFlare Railgun including help stop DDoS attacks it will do it faster and if were to spend the money on a liquid Web VPS with DDoS you would be at about $175 a month or you could start off on the base package with fire host and that would cost you $200 a month however for a month $250 you can you can add edge casts outstanding content delivery network
I have accounts with liquid Web and fire host I use fire host primarily and really do not do much with liquid Web however both of them are better than CloudFlare in terms of protection and in terms of speed.
http://www.thewhir.com/web-hosting-news/cn-domain-service-restored-following-massive-ddos-attack
I of course have tried to use CloudFlare and found it worthless to me.
My main point is for $200 a month you can get a much faster and safer setup.
The other thing to remember when CloudFlare said it blocked a 300 GB attack that is considered fictitious and debatable by many in the
industry myself included. I don't think switches that At 10 Gb can do that when there's only two pointing at it
Here is a link from cloud flair talking about how good of a job they did saving the Internet and stopping the biggest attack ever. They did not succeed in keeping Spamhaus online so they did not stop the attack in my opinion.
http://blog.cloudflare.com/the-ddos-that-almost-broke-the-internet
"On Monday, March 18, 2013 Spamhaus contacted CloudFlare regarding an attack they were seeing against their website spamhaus.org. They signed up for CloudFlare and we quickly mitigated the attack." & said there was "more then than 300Gbps of attack traffic"
The other big difference between CF and everyone else is they utilize there any cast network to accept the attack this slows down any one on that network instantly as it did when "the attack that almost broke the Internet happened"
Instead of moving the traffic to a private cloud and dealing with it so it would not affect others using their service they basically did not have any regard for their users at that time.
"The attackers were quiet for a day. Then, on March 22 at 18:00 UTC, the attack resumed, peaking at 120Gbps of traffic hitting our network. As we discussed in the previous blog post, CloudFlare uses Anycast technology which spreads the load of a distributed attack across all our data centers. This allowed us to mitigate the attack without it affecting Spamhaus or any of our other customers. The attackers ceased their attack against the Spamhaus website four hours after it started."
CloudFlare actually spread the attack on to their own customers this is something that harmed everyone using their service that day for I believe five days total.
http://www.theregister.co.uk/Print/2013/03/28/spamhaus_mega_ddos_little_collateral_damage/
http://www.webhostingtalk.com/showthread.php?t=1065748
Nearly half of DDoS attacks in the first half of 2013 are now larger than 1Gbps, up from 13.5 percent in 2012,
http://www.thewhir.com/web-hosting-news/prolexic-stops-massive-dns-reflection-attack
largest DNS reflection attack ever recorded,” which peaked at 167Gbps.
If this is now the largest what was the 300gbps?
It is not bad for SEO in itself however using a CAPTCHA page if it thinks your visitors is a attack or bot is very bad & happens allot I know changing your IP address can cause some issues. What I'm getting at is if you want the type of protection you were talking about there are much better methods of going about getting it.
Try them out see what you think you can really only learn more about it.
I hope this helps you,
Thomas