I switched with my Domain to Cloudflare and now I'm trying to use CloudFlare's SSL Feature.
I already own a SSL cert from StartSSL so I would be possible to set the settings to 'Full (Strict)' but I don't want to so I turned it to 'Full'.
Now I'm getting 525 Errors, after a 'Retry for a live Version' everything is okay.
But I'm getting this Error everytime.
Has anyone an idea ?
Thank you
Picture of my Error
Change Cloudflare SSL/TLS encryption mode in to Flexible. it worked for me.
A 525 error indicates that CloudFlare was unable to contact your origin server and create a SSL connection with it.
This can be due to:
Your servers not having matching or compatible SSL Ciphers
Your website may not have a certificate installed properly
Your website may not have a dedicated IP OR is not configured to use SNI
Attempt to contact your hosting provider for assistance to ensure that your SSL certificate is setup correctly. If you are using a control panel, a quick google search can help you find a install guide for that said control panel.
Visit SSL/TLS tab in Cloudflare. Then:
Switch Your SSL/TLS encryption mode to Flexible.
Make sure to switch On "Always Use HTTPS" under "Edge Certificate" tab.
This will transfer all your request from Http to Https automatically. And if you'll implement custom SSL certificate on your hosting server then this 525 error will automatically disappear without changing anything on Cloudflare.
Got the same problem a few days ago.
Our DevOps contacted support and found out that Cloudflare changed certificate type or smth in that way. Asked to return everything back.
That helped.
I went through the same problem today and found that (at least in my case) it was the lack of TLS v1.3
I had just made a server using nginx + php-fpm and a self signed ssl to use below CloudFlare proxy.
When I switched from the production server to this new one, it gave error 525.
I gave the command: curl -I https://your_server_public_ip/ and it returned the error:
error: 1408F10B: SSL routines: ssl3_get_record: wrong version number
This error is described in the CloudFlare community at:
https://community.cloudflare.com/t/community-tip-fixing-error-525-ssl-handshake-failed/44256
There they advise turning off TLS v1.3 on the CloudFlare panel, but I decided to try installing it.
Using nginx is so easy that I don’t know why to have it shut down.
Only add TLSv1.3 like this-> ssl_protocols TLSv1.2 TLSv1.3; in your nginx/snippets/ssl-params.conf file (default Ubuntu 20 and 18) that will work and you still use the latest and most secure protocols.
Related
I'm using CloudFlare SSL. when I set SSL to flexible everything works fine.
But if I use full SSL mode this error occurs instantly:
Note that I set the certificate and the key in my cpanel ssl section and I think everything is done ok.
Why this is happening and how to fix it ?
It is quite simple. All you have to remember is:
Flexible - there should be no SSL installed for that domain on the server ( no VHOST for port 443 either ).
Full - there should be an SSL installed for that domain, but it does not have to be a valid one ( you can use a self-signed or expired SSL ).
Full Strict - there should be a VALID SSL installed for that domain on the server ( it has to be absolutely a valid and active SSL ).
So, depending on the SSL you have on your domain server, just set the Cloudflare SSL to one of the above options. If you believe that everything is okay and you still get an issue, I would suggest reaching your web host to check that further for you.
Pulling my hair out here. Yesterday I set up an SSL Certificate in IIS10. This is the process I followed:
In IIS, under Server Certificates complete Create Certificate Request (generated server.csr & server.key)
Go to sslforfree.com and start "create certificate" process.
Enter Static IP in Domain box
In Validity, choose paste Existing CSR (paste in contents of server.csr)
Select free 90 day certificate
Choose HTTP file upload and add auth file to virtual share in IIS.
Verified OK.
Download certificate
Back in IIS, select "Complete Certificate Request"
Browse to and select "certificate.crt" file.
Give it a friendly name etc, and save.
Browse to website under sites in IIS, and select Bindings. Choose the IP of the server, the incoming Port, and the newly imported SSL certificate.
Back in sslforfree, check the installation.
Everything all good
So everything was working beautifully, could see the certificate in the browser etc, job done.
Now come to today, and the server is actively refusing requests. Go back to check the installation of my SSL on sslforfree, and it's no longer found. Tried removing and re-adding, but nothing I do seems to get the SSL to be visible.
It's not that the certificate is refused, the browser doesn't even think it's there. Why would IIS suddenly stop sharing the certificate? I am totally stumped.
EDIT
As per the advice below, I set up a DNS name with CloudFlare and pointed it at my server.
I Set up the bindings in IIS to link to the new hostname and removed the old certificate (one for port 443 and this one for port 4443 which the API runs on):
Ports 80, 443 and 4443 are all port-forwarded on the router to my server:
I then downloaded Win-ACME and successfully created the Let's Encrypt certificate, and the renewal task created in Task Scheduler.
SSL Cert now shows in Bindings:
SSL Certificate appears to be all good:
...but when I go to the site, using the new domain name. Same problem... no certificate:
So I'm not sure what the problem is here...
This issue may happens when the imported cert does not have a private key associated. solution would be to import the .CER file to your system(from where certificate is requested) personel store and export it with private key. Then copy the .pfx file to required server and import it from server certificate option under IIS.
And you can refer to this link: The Whole Story of "Server Certificate Disappears in IIS 7/7.5/8/8.5/10.0 After Installing It! Why!".
Thanks to Lex Li, I was able to dig around with Jexus Manager, and IIS Crypto to work out what was wrong.
Seems having TLS 1.2 an TLS 1.3 enabled on my machine at the same time was causing issues. Discovered this using Postman and disabling certain TLS Protocols, eventually getting it to work.
For those of you who may experience similar issues, using this application and setting it to "Best Practices" after disabling TLS 1.3 in my Registry, I finally have it working, with a certificate.
I am trying to publish my Alexa skill using Letsencrypt SSL Certificate.
Google Chrome does not show any warning icon if I browse to my https URL using letsencrypt certificate.
However, when I try to test using Alexa console, an error occurs as :
"SSL Handshake failed".
I see on Amazon Alexa forums that there is a buzz around letsencrypt support.
Some posts say it is supported and some say it isn't.
Could someone here clarify whether letsencrypt free SSL certificate is supported for building custom alexa skills ?
Download the contents of your fullchain.pem cert, from /etc/letsencrypt/live/<domain>/fullchain.pem on your server
On your skill config page, select the "SSL" Tab.
Mark "I will upload a self-signed certificate in X.509 format."
Paste the contents of your fullchain.pem file.
I was able to get a Let's Encrypt wildcard certificate working with an Alexa custom skill after choosing the option "My development endpoint is a sub-domain of a domain that has a wildcard certificate from a certificate authority" in the developer console.
I also had an issue with a Nginx reverse proxy configuration that caused a failure in the Alexa Simulator and provided no helpful error. Fortunately you can also use the Manual JSON option which yielded the error "Cannot establish SSL connection to your skill endpoint".
I was able to track the issue down to the ssl_ciphers value in the ssl.conf file. Even though it was compatible with the Intermediate Security recommended setting for TLS 1.2, I had to comment it out to make it work. I hope someone else can determine why Amazon servers reject the certificate when this setting is used, it could be that TLS 1.3 is now required.
My Nginx server has an SSL certificate that looks really good and works in most browsers perfectly. The server is https://live.evmote.com . You can "hit" the server by going to https://live.evmote.com/primus .
The SSL Cert check is here: https://www.ssllabs.com/ssltest/analyze.html?d=live.evmote.com
So far, so good. The problem is specifically on the Tesla Model S browser (the in-car browser). It gives a "Bad certificate" error. The Tesla browser is notoriously bad and has incomplete support. There's no way to view the cert chain or debug the problem from the Tesla. It's more like an appliance than a computer.
Here's the SSL support from within the Tesla:
http://i.imgur.com/EbIrClM.jpg
On the Nginx server, I'm getting this error in the log:
SSL3_GET_CLIENT_HELLO:no shared cipher
Now, clearly from the Tesla SSL report and the server report, there are shared ciphers. I would expect that they would handshake on this one:
TLS_RSA_WITH_AES_256_CBC_SHA (0x35)
I'm not sure how to troubleshoot from here.
Thanks,
Ryan
The error message might be misleading. What's definitely a problem is that the browser does not support SNI, but your web site requires it. At least it only serves the valid certificate (for live.evmote.com) for SNI capable browsers, all the others get a self-signed wildcard certificate which will not be accepted by a browser doing proper certificate validation.
We've hit similar problem from the Java client. The root cause was explicitly set protocols in SSL context (io.netty.handler.ssl.SslContext):
val ctx = io.netty.handler.ssl.SslContextBuilder.forClient()
...
.protocols("SSLv2Hello,TLSv1.2,TLSv1.3".split(","))
.build()
And precisely SSLv2Hello, that should be neither declared nor used here.
Unfortunately, we can't control all our clients. So further investigation showed this problem has appeared after OpenSSL upgrade to 1.1.*.
Once we downgraded OpenSSL to 1.0.* it do the trick. Nginx 1.18.0 + OpenSSL 1.0.2u could handle handshakes with SSLv2Hello without errors and with the highest protocol possible.
I got an issue from my client regarding the SSL setup for his website. I'm not familiar with the SSL certification setup process. He is saying that We have an SSL certificate for this server but I can’t tell if it’s setup properly or not.
If I open that website, firefox says Warning: Contains unauthorized content. I am seeing some details in the warning message window which are given below:
Web site: mydomain.com
Owner: This web site does not supply ownership information
Verified by: Not specified
Mainly I want to know whether the SSL certificate used for this site is valid or not. Can anybody suggest a way to check for the SSL certificate validation of a website.
Thanks
Telnet the server on port 443. If it is responding then it is a certificate problem
To install certificate
Check this