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
774 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 ...
2
votes
2answers
656 views

iptables with Cloudflare

I'm using fail2ban to block web vulnerability scanners. It is working correctly when visiting the site if CloudFlare is bypassed, but a user can still access it if going through it. I have ...
0
votes
1answer
1k 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 ...
0
votes
3answers
793 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
577 views

Show original ip with cloudflare

I installed nginx and the HttpRealipModule to get the original ip of my visitors.I also add this in the http{ } part in my nginx.conf set_real_ip_from 204.93.240.0/24; set_real_ip_from ...
0
votes
3answers
2k 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 ...
3
votes
2answers
2k views

CloudFlare offers DNS root CNAMEs. Any resolution gotchas to be aware of?

I'm not that familiar with the inner workings of DNS, preferring to just add my CNAMEs and A records as appropriate, and leave the behind the scenes to other services. I host a few sites on Amazon S3, ...
1
vote
1answer
626 views

Using CloudFlare with a mirror site

I am developing a mirror website (where people can download files, sort of like a FTP). I was wondering about using CloudFlare to help cut down on bandwidth usage. I have the mirror website with ...
0
votes
1answer
149 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
2answers
486 views

Files will not update after setting up Cloudflare

I setup cloud flare for and tried it out, it messed up my entire site by caching pages and sending the same page over and over (I use ajax and call the page over and over). I took it off and switched ...
7
votes
2answers
4k 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 ...
3
votes
2answers
2k views

How does CloudFlare protect a web site?

I am a little confused about the protection CloudFlare offers. I am directing the www subdomain through CloudFlare with an Orange Cloud, and another subdomain (let's say direct) with a Grey Cloud. But ...
0
votes
1answer
1k views

DNS takes forever - Using Pingdom

So I am using the new CloudFlare.. I have a GoDaddy shared hosting account, which i know isn't the fastest in the world, but DNS seems very slow. I have a Wordpress blog configured as the following: ...
3
votes
1answer
303 views

Iptables list doesn't persist across restarts

I am trying to white list CloudFlare's IP addresses on my server by issuing these: iptables -N whitelist iptables -A whitelist -s 204.93.177.0/24 -j ACCEPT iptables -A whitelist -s 199.27.128.0/21 -j ...
0
votes
1answer
296 views

Cloudflare performance, ddos [closed]

I have been using cloudflare CDN on my website (wordpress) for about 4 months, mostly because I was hoping the CDN would make things faster, and make the load on my cheap server somewhat smaller, ...
0
votes
1answer
162 views

Usefulness of CloudFlare for clients of Argentina [closed]

We are currently hosting an important site in the US with a CloudFlare pro subscription. Since most of the people that visit the site are from Argentina, we are considering migrating the server to ...
0
votes
2answers
1k views

Cloudflare hurting performance

I recently set up cloudflare on a new site I'm about to launch. I ran some benchmarks with it on and with it off and the output is extremely troubling. Does this make sense to anyone? Before when ...
1
vote
2answers
2k views

Cloudflare and Cache-Control

I am experimenting with Cloudflare, mainly to relief the load of my webserver in peak moments. I just signed up and it seems to be working (all my traffic is being proxied) but Cloudflare does not ...
2
votes
1answer
1k views

AWS Free Usage Tier + Cloudflare… possible?

If I throw my MySQL/PHP app up on a Amazon EC2 instance (using their AWS Free Usage Tier program) and couple it with CloudFlare (the free plan of course) roughly how many daily visitors can I ...
0
votes
1answer
202 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 ...