First I want to point out that many folks have an unreasonable expectation to what Cloudflare (or any service) will provide out of the box in terms of protection and security. Looking at the current stats, there were over 67M requests hours and 53M+ of those requests were served from cache (accounting for over 95% of the total bandwidth).

No.

The attacks are coming from all over the world.

As a result I created a Firewall rule which blocks traffic from these three countries.

When you consider that the majority of web traffic is served through CDNs, they really are the first line of defense against malicious attacks. Are you using free or paid, what is your configuration, and how can Cloudflare be responsible for an attack directed at your site?In general on lower plans, Cloudflare only provides tools to protect against layer 7 DDoS. Also 53M+ of those requests are identified as coming from Tor so a Firewall rule to block the “country” T1 would prevent any of those particular requests from reaching the origin similar to the other country based rule you have in place. If under attack mode isn’t working, maybe try a firewall rules set to “challenge”. I hope this helps. I’m under attack since a few days. Its a huge botnet attack.

If even IUA did not stop them, that would suggest they either run a full-fledged JavaScript environment or one of those IUA crackers.Please understand that I do not want to reveal that.Do these requests have anything in common?

Is it unreasonable to expect everyone to be a Cloudflare expert to configure their system?

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We acknowledge there are many other vectors. There are also other security tools available such as web application firewall, rate limiting, full page caching and other features which can be used to protect the origin.There are a number of steps detailed here which may be of help: I respectfully disagree with you boynet2, here is my reasoning and feel free to challenge it:" it very easy this day to bypass as the OP and a lot others posts in the forum(me included) can show you how easy it is to bypass it"id they look for it?, because it is documented and information is availableI did not remember seeing anywhere anything about the importance of logsPlease post a tutorial on how to do it, perhaps it will help the Cloudflare team to improve itAs long as your browser can bypass it any browser can do it, the proof is all this low level requests flooding attacks that bypass it95% effectiveness for a free plan seems pretty good in my eyesIndeed but if the website is down in the end it dosent really matters the attack successfully shut the site.I am not hating on Cloudflare but I think there is room for improvments in layer7 protectionI respectfully disagree with you boynet2, here is my reasoning and feel free to challenge it:" it very easy this day to bypass as the OP and a lot others posts in the forum(me included) can show you how easy it is to bypass it"So I think there are valid arguments on both sides.

DoS protection. 2 Likes.

Path and Query String is always empty.If even IUA did not stop them, that would suggest they either run a full-fledged JavaScript environment or one of those IUA crackers.Yea I think so. Nowhere mentioned my real server IP.Okey, after checking again, you are right. Can you post a log excerpt? When it looks like an “easy button” that can often prevent people from digging in deeper.Second believing that the free version of our service offers all the same features as our other self serve plans or Enterprise plans is common and I’m not sure why.
tech83.

A log showing 5 sampled requests of each of the top 20 URLs (query strings removed) from past hour would for example go a long way in any troubleshooting. Assuming your main audience is not from there you could impose a captcha challenge for all these countries.

Keeping you updated once I see the results.This topic was automatically closed after 30 days.

This still blocks the majority of web scrapers that don’t want to be running expensive javascript.lack of info - its sad to wake up one day and find out that layer 7 is not under the normal protection umbrella.Layer 7 can be protected via Cloudflare, but it is up to you to figure out what Cloudflare tools (listed Full automated layer 7 ddos protection can be done via rate limit rules if you so wish. Cloudflare cannot mitigate a DDoS attack.

Can you post a log excerpt?Here are two excerpts of the CloudFlare Firewall Log.

FYI, I’ve seen large forums handle such layer 7 DDOS attacks with such a fail2ban + CF Firewall implementation with ease for 1-3 million requests/second ! Its a huge botnet attack. Do some of the other features cost $? Security and DDoS Protection. There are plenty of services out there which act like an origin (Heroku for example) where you have limited/no logs which makes troubleshooting difficult if Cloudflare doesn’t provide them. Perhaps you should just list it as an alternative on the Log page for non-enterprise customers?This topic was automatically closed after 30 days. Google has long-considered speed a ranking factor in its algorithms.

Sure you can use the 3rd party Logflare app, but I didn’t know about that one until I read this thread. How to handle such situations?Yes, for sure. Shouldn’t Cloudflare be detecting this and automatically doing something to protect? The domain is still accessible right now for confirmation of the current attack on-going. Hello, I’m under attack since a few days.

Cloudflare provides the tools for you to use, just need to use them optimally .

Its a 50% 50% chance of getting a “Connection timed out” error or the page loading at least 30 seconds to show up…That seems to be mostly Asian countries plus the Ukraine, Russia, and Brazil. Part of that, is I think our fault because we have generally opted to make the sign-up/on-boarding process as simple as possible. We try to use twitter and our blog to provide information as well and our KB is not the worst I’ve ever used.


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