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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2
votes
2answers
1k views

Correct usage of whitelisting cloudflare IPs in iptables

I'm relatively new to using the command line so I'm understandably nervous about fiddling around with IP tables and accidentally doing something wrong which consequently opens up vulnerabilities in ...
0
votes
2answers
217 views

How do I find the cause of http to https redirect loop?

I setup owncloud on a new box recently (Apache/2.4.10 Debian). This was before I got an ssl cert through Let's Encrypt. I've been trying to force http to https, but I always end up with redirect ...
0
votes
2answers
1k views

Https url appended with port 80 using CloudFlare, Nginx, and Thin

I have a Nginx setup for my Thin server running a Ruby on Rails project. Nginx is currently the endpoint for my SSL. I recently had some issues with attacks on my webserver, so I decided to add ...
4
votes
1answer
256 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 ...
4
votes
1answer
549 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 ...
1
vote
1answer
24 views

Wildcard Subdomains and Custom Domain Names

I have some questions regarding Nginx configuration with wildcard subdomains, and then how custom domains come into the picture. Here is my situation. Let's say I own the site awesome.com. When a ...
1
vote
1answer
973 views

How to log clients' real IPs when using CloudFlare + Nginx + Apache

I've been stuck for days trying to solve this problem, I hope someone can help me with this. I have Nginx stands as a reverse proxy in front of Apache. I'm able to log clients' real IPs by using ...
0
votes
1answer
21 views

Disable Cloudlfare SSL on nginx to use certificate

I use Nginx to host a wordpress site which is configured to use exclusively SSL. A while ago, I activated the Strict SSL option and the HSTS option from Cloudflare. Now I want to disable it and only ...
0
votes
1answer
27 views

Can I use Cloudflare CDN/HTTP proxy for SSL-enabled web-site?

I want to use Cloudflare CDN/HTTP proxy for my web-site that already has HTTPS through LetsEncrypt certificate. I don't want to use Cloudflare's Free SSL certificate as it doesn't work on WindowsXP ...
0
votes
1answer
77 views

Can I use hosts.allow hosts.deny files to restrict access to my websites (Nginx)?

Is there any way how to use hosts.allow and hosts.deny files to restrict access to the websites (Nginx)? This does not work: hosts.allow file content: nginx: SOME-IP-ADDRESS hosts.deny file ...
0
votes
1answer
52 views

how to fix “Invalid command 'set_real_ip_from'” error?

I'm using centos 6 , nginx as reverse proxy,directadmin and cloudflare. I followed the instructions to get real visitors IP as below: $ nano /etc/nginx/nginx.conf added these to http{ ...
0
votes
1answer
13 views

Log access to cached content by 3rd party

The question is pretty much the same as this one: How to log a request to apache access log if it's cached by Varnish but instead of varnish let's say I am using CloudFlare. Is there any way to ...
0
votes
1answer
63 views

What's going wrong with my AWS domain?

I registered a domain with AWS, but I have my server at Heroku and wanted to use CloudFlare with it. So I set out to set this up. I now have my nameservers pointing to tim.ns.cloudflare.com and ...
0
votes
1answer
57 views

DNS Issues connection with AT&

I run a new website called Yclas.com. I am bootstrapping the business and finally got the first paid customers but I am stuck with an issue with 2 customers from USA. This 2 customers use AT&T as ...
0
votes
1answer
561 views

ERR_SSL_VERSION_OR_CIPHER_MISMATCH on Ubuntu

I'm running wordpress on a Digitalocean VPS with cloudflare installed. My ssl was working perfectly till a few days ago when a buch of clients informed me they received the following error when ...
0
votes
1answer
32 views

Inbound IPTables rules based on queried domain

I have an odd situation and I'm not entirely sure if it is even possible in IPTables. If it isn't, that's fine and I can do without. If it is, fantastic, I'd love to see how to implement it. So, my ...
0
votes
1answer
711 views

HaProxy + CloudFlare

I am trying to setup HaProxy with DDoS protection rules (rate limiting). However, I think HaProxy is now rate limiting CloudFlare IPs instead of Visitor/Real IPs. (note: my site itself is fine, ...
0
votes
1answer
254 views

How to debug nginx + php-fpm download failures?

Downloads fail after all data downloaded on nginx + php-fpm. I'm controlling downloads of zip files (roughly 100mb each) with a PHP script that streams the file directly to the client. I'm using ...
0
votes
1answer
257 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
118 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 ...
0
votes
1answer
152 views

powweb and cloudflare

I am using powweb as hosting provider and cloudflare as free cdn. Its been few weeks since my website is down and it says "website down, no cache version available". And to add more to it, I cannot ...
0
votes
1answer
204 views

Free Web Forwarding without Nameservers

I have a site running Google App Engine and using CloudFlare (a free CDN proxy, using its own nameserver). This leaves me with no options for the root domain. App Engine does not support naked ...
-1
votes
1answer
79 views

I can't prepend HTTP://WWW to the URL when I redirect to the same domain

There is this WordPress application on OpenShift that uses CloudFlare as DNS server. OpenShift gives us a URL such as app-user.rhcloud.com and allow you to add alias. Such as www.website.comand ...
-1
votes
1answer
40 views

Un-Noticed Vulnerability, I need to know if i should do anything

Possible Web-Site Vulnerability. I'm not sure if this is the right place to ask this, but I am running my own website, that is still currently being developed, but since it is 'Open as Beta' it is ...
-1
votes
1answer
181 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 ...
-2
votes
1answer
180 views

Squid Forward Proxy on Cloudflare

Is it possible to set up a forward proxy using Squid and still have Cloudflare CDN working? For example, I currently have Squid running on Ubuntu, with this being the squid.conf file. acl myhost ...
1
vote
0answers
26 views

CloudFlare - Show captcha to everyone, except country

I wonder whether it is possible in CloudFlare's IP firewall to challenge everyone with a captcha, except 2-3 countries. Tried on my own and searched the web but did not find how.
1
vote
0answers
39 views

Large RSS feed requests to non-existent URL causing 404 (and high load)

Recently I had a new site launced completly replacing a previous site. We have cloudflare in front and switched the host-name to the new site IP. Instantly we saw load go above 200+ and a constant ...
1
vote
0answers
31 views

Cannot change Nameservers to cloudflare

I have a domain but I can't change its nameservers to point Cloudflare's. I've been told that the NIC is rejecting them (it's a ccTLD), literally "your nameservers are not authoritative for that ...
1
vote
0answers
32 views

CloudFlare not caching vBulletin php page serving image content

I have signed up with CloudFlare and while it seems to work for some pages I cannot get a rule to work correctly with php pages serving images. The page in question is: ...
1
vote
0answers
62 views

Drupal multi-site, virtual hosts and CloudFlare

I'm hoping that someone with some experience with CloudFlare can lend me some guidance. Background Drupal multi-site hosting 200+ sites, launching new sites on a regular basis. Single IP for all ...
1
vote
0answers
545 views

CloudFlare + Nginx + ngx_http_realip_module

We are currently using ngx_http_realip_module to convert CF ip's back to the users'. It works well for the most part but some ips in our access.log are still from CF. Current config in http {}: ...
1
vote
0answers
255 views

How to avoid OpenShift sub domains being cached by Google?

I've set up a custom domain with my OpenShift application. (Which is a blog) I've setup CloudFlare with page rules to redirect mydomain.com -> www.mydomain.com Now essentially, I've two aliases for my ...
1
vote
0answers
209 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
0answers
355 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 ...
1
vote
0answers
746 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
0answers
59 views

too many redirects when using SSL

Im having an issue with https redirects. Ive tested in chrome, firefox and safari. When i load my website using https i get the errors Firefox: "The page isn't redirecting properly" Chrome: ...
0
votes
0answers
77 views

Whitelist or disable rate limit of CloudFlare IPs for AWS EC2

I have two AWS EC2 instance in Sydney, serving sites sitting behind CloudFlare. I'm not using ELB. Over the last week I have started seeing CloudFlare serving 522 Timeout errors fairly regularly. ...
0
votes
0answers
72 views

nginx req limit & fail2ban & cloudflare large attacks

I started to use as the topic says nginx with req limit + fail2ban + cloudflare. If someone exceeds the requests on any php file the ip gets blocked over the cloudflare api in the "ip firewall" on ...
0
votes
0answers
22 views

Website Guests Viewing

I'm not sure if this is the right place to ask but recently on my website, it is being taken down by "guests" as in all of a sudden I will have 13,000 guests on my website. Cloudflare nor OVH detects ...
0
votes
0answers
47 views

Why does Cloudflare DNS always resolve to the same edge servers?

Cloudflare has servers all around the globe, yet it always returns the same set of servers for a website regardless of the requester's location. For example I've run dig for curse.com (which uses ...
0
votes
0answers
33 views

Domain forwarding without running a server with CloudFlare

CloudFlare has a great option in PageRules to set up URL forwarding. I can set it to *.example.com/* to redirect everything to a different domain. My problem is that while this works perfectly, this ...
0
votes
0answers
90 views

Is there a limit for the overall cache size on cloudflare?

I want to cache and pressed static JPG map tiles on cloudflare. Those around 10KB files each, but in total quite some GB. Is there a limit of objects or total size of cached objects? (Free Plan if ...
0
votes
0answers
89 views

Nginx - add a subdomain to a running webserver using the same SSL cert

I am running a web server on a Lemp installation. My website is "protected" by CloudFlare, using SSL-full (differences between SSL setups on CloudFlare), hence i have a self-signed certificate which ...
0
votes
0answers
252 views

Cloudflare integration with Azure websites

On cloudflare, I have given below details for example.com A record pointing to Azure IP www CNAME record to example.azurewebsites.net Cloudflare routing is working for example.com and ...
0
votes
0answers
159 views

How to connect Amazon EC2 with Cloudflare?

I'm trying to set up Amazon EC2 with Cloudflare for more than one day. I already added all the information NS failover with NS route53 no Cloudflare but nothing works. Someone got success to connect ...
0
votes
0answers
155 views

Bad Gateway - NGINX Load Balancer Cloudflare

I have configured an NGINX 'load-balancer' to sit in front of my site. Right now my backend consists of only one server, but I plan to add more to actually utilize the 'load-balancing' of NGINX. If I ...
0
votes
0answers
91 views

Delay for CNAME entries on Cloudflare, or any other restriction?

I have a domain like "example.org" at CloudFlare. I have a CDN at Amazon and would like a CNAME subdomain pointing to the CDN host. I have added a CNAME called "documents.public" pointing to the CDN ...
0
votes
0answers
738 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
39 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 ...