CloudFlare is a content delivery network and distributed domain name server service marketed as improving website performance and speed and providing security.

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29 views

Using cloudflare as the only load balancer

Say I have 3 vps nodes in linode to serve traffic on a single website. Linode themselves provides a node balancing solution: https://www.linode.com/nodebalancers But I use cloudflare and was ...
0
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0answers
34 views

Nginx & Cakephp & another subfolder and Cloudflare application

I'm using nginx 1.6 and CakePhp 2.x At www.example.com/fasdwqe I see missing controller from Cakephp. But on www.example.com I am getting 504 gateway timeout from Cloudflare. I want to run another ...
0
votes
2answers
20 views

How can I use Lighttpd's $HTTP[“remoteip”] together with Cloudflare?

I am using Clodflare DNS. I only want to allow certain IPs to access certain files. How can I set up my lighttpd.conf to properly detect the correct IP? I know how to do it for the access.log. Is it ...
1
vote
2answers
57 views

Does CloudFlare make a site a greater potential DDOS target?

CloudFlare has gotten a lot of press recently as protecting businesses from DDOS attacks. But from looking at their twitter feed, it looks like they are targeted every day, and large segments of their ...
0
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2answers
33 views

Configuring DNS for Cloudflare

I'm trying to configure the DNS for my CloudFlare in my cPanel my host provided me and this keeps happening! But, the thing is that my domain is already pointed to my CloudFlare and I waited 24 ...
0
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0answers
35 views

apache + varnish + cloudflare Log IP's

trying to log the real ip of the visitors to a site, with a server running apache, varnish and cloudflare. im currently logging the cloudflare server IP's from visitors, after altering the ...
0
votes
0answers
25 views

How do you protect your <appid>.appspot.com domain from DDOS attack?

If I want to use CloudFlare to help protect my GAE app via it's custom domain, I still am vulnerable to attacks directly on the .appspot.com domain. How do I mitigate that? I could force redirect ...
4
votes
5answers
1k views

Using namecheap dns with cloudflare

Since CloudFlare doesn't provide E-mail forwarding I need to leave my DNS management on Namecheap. What DNS records (A,CNAME,...) would I need to point to CloudFlare (and to where) to be able to ...
0
votes
2answers
69 views

Is it sensible to use both pagespeed and cloudflare?

We're using google's pagespeed service. From what I can gather it just draws the page from our webserver and runs it through the mod_pagespeed optimisation module. I'm wondering does it do any ...
0
votes
1answer
85 views

How do I deny all requests not from cloudflare?

I've recently gotten denial of service attacks from multiple proxy ips, so I installed cloudflare to prevent this. Then I started noticing that they're bypassing cloudflare by connecting directly to ...
1
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0answers
32 views

Some emails don't arrive

Yesterday, somehow a DNS Zone File got removed from Cloudflare. So after re-editing the file everything seemed okay. Now there's the problem that some emails don't arrive in the inbox. Strange thing ...
1
vote
2answers
778 views

CloudFlare CDN and static site with root on Amazon S3

I've set up an S3 bucket to host my static site. Now I am trying to wrap CloudFlare around this, but I get the following warning when adding a CNAME entry for the root domain in CloudFlare's DNS ...
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votes
2answers
91 views

How does Cloudflare know about my Subdomains?

I just signed up Cloudfare and they showed me a list of my subdomains by scanning my domain. How do they do this? What technology is used to scan all subdomains related to a root domain?
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2answers
99 views

How to add subdomains to cloudflare's network?

I signed up for cloudflare in order to speed up my website & protect it from attacks. But I'm unable to figure out how to add subdomains & sites installed at (directories) ...
0
votes
1answer
52 views

Blocking request with query string

I'm an under a DDoS attack though I have cloud flare.. I found out that the attacker is accessing the server using query strings "?a=randomnumber" I don't use query strings in my website so I need ...
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votes
1answer
169 views

Hide my real ip with Cloudflare [closed]

I have a VPS and I want to hide IP with cloudflare. IP: 127.0.0.1 NS: ns1.domain.com So I created an account and change the nameservers but when I check with ping or whois service, it returns MY ...
0
votes
0answers
37 views

Website Times Out In The UK

My site is unavailable intermittently. Unfortunately the server suffered a melt down and my host had to restore me to another server from an antiquated backup. They sorted out the DNS to point to the ...
1
vote
2answers
110 views

MX lookup failed

This is a part of my dns-zone file: ;; MX Records mx.domain.de. 300 IN MX 1 direct.domain.de. ;; CNAME Records www.domain.de. 300 IN CNAME domain.de. mail.domain.de. 300 IN CNAME ...
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vote
2answers
196 views

Why do DNS services propagate so much faster? [closed]

Say I want to point my domain blah.example.com from a server located at IP addres 1.2.3.4, to a different server located at IP address 5.6.7.8. This requires a DNS change. Why is it that when I log ...
1
vote
0answers
71 views

nginx and cloudlfare ip confusion?

I am using the below config in http block of my nginx.conf to get real ip while using Cloudflare acceleration service: ## Cloudflare settings to get Real IP's set_real_ip_from ...
0
votes
1answer
62 views

AWS subdomains issues

Hi guys! I've tried to create a couple of subdomains for my website. I created virtual hosts in the apache configuration and I added the records to the Amazon Route53. But now, it's working sometimes ...
0
votes
0answers
77 views

Pound not redirecting

im quite new to using pound and when i installed & configured it, simply itnt working. all i get is the cloudflare 521 error page (server offline) i can reach all servers by ping and entering ...
0
votes
3answers
188 views

Issue varnish purge through CloudFlare to Varnish

I've been working on this for a while and can't seem to find any solution. I have varnish sitting in front of my nginx server, with CloudFlare sitting in front. When I issue a curl -X PURGE host ...
0
votes
1answer
1k views

Resolving CloudFlare DNS related mail delivery problems

I recently started using CloudFlare and am having a few teething problems. Our domain is netlanguages.com and while we have a lot of sub-domains listen, we are currently only trialling a few of the ...
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0answers
134 views

Stuck with DNS questions during migration to AWS EC2 + Route 53

We're running a little hosting service with two nameservers registered for us at a local registrar: ns1.ourcompany.com ns2.ourcompany.com Now i want to move over to cloudflare with all the DNS ...
0
votes
3answers
144 views

How to handle a DDoS attack on a search engine? [duplicate]

We are running a search engine and are seeing a huge amount of fake search queries coming in over the last days from thousands of IP addresses. There is no real pattern in terms of queries text or IP ...
0
votes
1answer
235 views

How to point subdomain to another subdomain using afraid.org and CloudFlare

So I have one subdomain from afraid.org (let's call it sub.afraid.org) and one domain registered somewhere (sub.domain.com) using CloudFlare DNS with it. What I want to do is point sub.afraid.org to ...
0
votes
1answer
54 views

CloudFlare dashboards empty, or performance issues

I wanted to test CloudFlare performance so I set my image gallery domain on it and started testing. I have added PageRules for caching. And chose the Security: Essentially Off. I checked NS check ...
4
votes
0answers
182 views

Amazon S3 appears to be blocking cloudflare IP addresses. How do I fix it?

I have static content that is being served by Cloudflare. Cloudflare points to Amazon S3 to pick up the static content and serves it via a CNAME (cdn.mydomain.com). The bucket is setup properly and ...
4
votes
2answers
2k views

Using dd-wrt Dynamic DNS client with CloudFlare

I'm trying to configure Dynamic DNS client on my router with dd-wrt (v24-sp2) firmware so it would dynamically change IP address in one of the DNS records. Unfortunately I encountered a problem… Here ...
1
vote
1answer
1k views

Cloudflare, reverse DNS and php mail ending up in spam folder

I've been using Cloudflare to host my DNS, and PHPMailer to send e-mail through ZOHOs SMTP servers with great success, but have found that all my e-mails are hitting Gmail, Zoho and Hotmails spam ...
2
votes
1answer
722 views

How secure is CloudFlare's basic SSL

CloudFlare's basic SSL package provides SSL encryption for you site, but only between your customer's browser, and the CloudFlare server where SSL is terminated. The connection between CloudFlare and ...
0
votes
1answer
132 views

SSH to a server with multiple reverse DNS entries [duplicate]

While SSHing into my server with an RSA key, I get this message: Address 255.100.236.105 1 maps to a1.example.com, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT! Even ...
4
votes
2answers
955 views

Setting up CloudFlare with Route 53?

I'm trying to get CloudFlare to sit in front of Route 53. I have my main web server on an ELB (which doesn't have an IP address). CloudFlare needs an IP for an A record, so how can I accomplish this?
0
votes
1answer
192 views

Configuration issue with HttpRealipModule (CloudFlare) in nginx configuration file

I've been attempting to use HttpRealipModule with the CloudFlare IP range in my main nginx configuration file but upon restarting nginx I'll just get a standard `"configuration file ...
0
votes
1answer
95 views

isup.me reported site down but I still can access website like normal

I have nginx as backend running WordPress (with w3tc cache plugin installed), varnish as reserve caching proxy, and cloudflare set up. Sometimes, I see isup.me reported my website is down but in fact ...
1
vote
0answers
352 views

nginx 502 bad gateway some files

im using cloudflare. my site working good but not loading any images, css files and js files. my server details; ubuntu 12.04 nginx/1.1.19 php5-fpm mysql you can check live here Check with www and ...
0
votes
2answers
326 views

Wordpress feed does not update after APC and Cloudflare

I am running a Wordpress site on a Ubuntu server. I installed APC and setup Cloudflare. After that I started having a strange problem with the feed. When I check the feed on the browser, I can see ...
0
votes
3answers
457 views

How To go fully IPv6 with Cloud Flare, a web server with both ipv4 and ipv6?

I have setup an Nginx server in a machine which have both ipv4 and ipv6 addresses. Currently, its connected to CloudFlare and only use ipv4. I have 1 ipv4 address assigned to the web server. Now what ...
0
votes
1answer
228 views

Sendmail Modifies Recipient Address from DNS Lookup

CentOS 5.8 box (Unitrends Appliance) with stock Sendmail sendmail-8.13.8-8.1.el5_7. If we email to normal addresses from the box (we have two boxes both doing the same thing) everything is fine. If ...
0
votes
3answers
1k views

Only allowing traffic from Cloudflare

I am new to Linux System Administration and I am experimenting with iptables trying to learn how to really lock down a system with them. And one thing a friend of mine recommended was that there was a ...
-5
votes
1answer
242 views

Protect dedicated server with cloudflare [closed]

I have an Ubuntu 10.04 based dedicated server with LAMP installed. I host several websites, but for now all websites are on same IP, configured using Apache Virtual Hosts. Everyone can attack my ...
2
votes
4answers
1k views

Statically mirroring a heavy trafficked site, CloudFlare as DNS

I run a fairly heavy trafficked website and due to some unfortunate incidents the machines that are in my cloud at Linode went down. And I have only a single Load Balancer machine exposed to the ...
1
vote
1answer
92 views

How to setup a “server is down” message like Reddit and Twitter does? [closed]

I have a VPS with our Ubuntu LoCo Team's blog, but I want to setup a message that says the server is down when it happens, like Reddit and Twitter does. For example, if I restart the server or my VPS ...
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votes
3answers
466 views

Two DNS service providers

Is there a way to have two DNS service providers? I have DNS Made Easy account and Cloudflare but I want to use both. My domain registrar has nameservers pointing to DNS Made Easy How would this ...
1
vote
0answers
131 views

Cloudflare is slowing down/showing offline while it isn't [closed]

Since a few days i migrated to cloudflare. But since this morning cloudflare is terribly slow and even showing an offline page once in a while. The first few requests are fast but it gets slower the ...
0
votes
1answer
357 views

CloudFlare; getting rid of the direct-connect subdomain

I'm right now trying to get rid of the direct-connect subdomain which gets added automatically and is not visible in the CloudFlare DNS panel. I've read about it here; ...
0
votes
1answer
578 views

Fail2Ban adds iptable rules but they are not working?

Fail2Ban just blocked my IP for 3 SSH attempts. It added the iptables rule and I can see it using the "sudo iptables -L -n" command. But I can still access the site and login through SSH! What might ...
3
votes
1answer
389 views

iptables - drop all HTTP(S) traffic but from CloudFlare

I would like to allow only HTTP(S) traffic coming from CloudFlare. In that way attackers cannot attack the server directly. I know CloudFlare is not mainly a DDoS mitigator, but I would like to try ...
1
vote
1answer
361 views

DNS subdomain catch-all linking to my external address

First of all, I'm not that into DNS, so maybe the answer to this question is very obvious, sorry in either way. What I want is this: A DNS record which catches all non-existing subdomains on my site ...