Environment- Established the connection between Azure App Service and OnPrem Network and vrified the connection.
Requirement - There is API hosted in OnPrem and with DNS name and HTTPS enabled (https://test.com/GetData)
But OnPrem API cannot be accessible from Azure API using DNS name and getting error like Hostname cannot be found.
But When I mention the Onprem API IP address (https://12.34.34.3/GetData), it seems communication established but ssl error - The SSL connection could not be established.
What would be the best solution here.
Regards
Abdul
Reason for "Hostname not found error" is the custom domain is not mapped to the Azure App service properly.
Please go to "Custom Domains" and check if the custom domain is added or not.
If not added, please follow the below procedure to add custom domain :
please click on "+ Add Custom Domain"
enter the domain and click on validate.
Add CNAME and TXT records in your DNS domain to verify domain ownership.
Click on "Add Custom Domain"
After adding the custom domain, the custom domain is still unsecure. You need to add the SSL certificate.
To add SSL certificate, please follow below procedure :
Go to TLS / SSL settings and click on "+ Add TLS / SSL Binding"
Select your custom domain and import the .pfx or public certificate for you domain and click Add.
Go to Custom Domains section and click on "Add binding".
Select the certificate of your domain and TLS/SSL type as SNI.
Click on "Add binding"
Now, you can access API using your custom domain which is secured.
When an app hosted on Azure App Service and tries to connect to a remote endpoint over SSL, it is important that the certificate on the remote endpoint service is issued by a Trusted Root CA. If the certificate on the remote service is a self-signed certificate or a private CA certificate, it will not be trusted by the instance hosting your app and the SSL handshake will fail with this error.
Possible solutions are:
1: Remote endpoint service must use a certificate issued by Trusted Root CA.
2: Host the application on App Service Environment (ASE) where you can upload your internal CA root certificate and use WEBSITE_LOAD_ROOT_CERTIFICATES appsetting to load it into Trusted Root store.
Related
I am trying to move our API Management instance behind the application gateway. I created a private dnszone on which the API management ETC is listening. I created Self Signed certificates for this private DNS zone0.
Uploaded the root certificate to the certificates tabs under security, as well as under the HTTP(s) settings tab of the application gateway. however my custom healt probe and health check keep mentioning that the CN Name does not match that one of the backend.
I have to mention that hostname of the listener is a different hostname (our public domain name) than the hostname i used on the private DNS Zone. Is this a problem?
You have to add the same custom domain used by application gateway to the api management service.
Api management is multi site service so it does not respond to the custom host names that are not defined under its custom domains because simply it does not know to which component/site it has to route the incoming request, also the the same extracted .CER certificate of the pfx certificate uploaded to api management should be added to the backend http settings for whitelisting purposes if you chose end to end ssl encryption, if you add a different certificate you will get a certificate mismatch error.
I have created Windows Server VM in Azure and deployed my site to IIS, which is now accessible at https://mysite.westeurope.cloudapp.azure.com/
however I get certificate error when I try to visit it from outside the vm.
how do I configure the VM to have proper https without certificate errors (just like app service - mysite.azurewebsites.net)?
As the comments from micker #micker, you can't get an SSL certificate for this subdomain westeurope.cloudapp.azure.com which is owned by Microsoft.
Since you host your websites on Azure VM, you could purchase a domain then get an SSL certificate for your own domain, then bind the SSL certificate to your custom domain in IIS on the Azure VM. You can either purchase that certificate through Azure or an external provider or get a free SSL cert from Let's Encrypt.
However, if you just want to have a test in your test environment, you can use a self-signed certification with this DNS name like vma.centralus.cloudapp.azure.com. You can follow steps in How To Create A SHA-256 Self-Signed Certificate on the Azure VM then export this cert .cer format file on the Azure VM and import the .cer cert under the mmc---certificate---local machine---Trusted root certification Authorities on the machine where you want to access the websites. Please note this It's not recommended to use self-signed cert in your production environment.
I had same issue, and I found resolution without custom domain using following additional azure settings.
create Azure WAF, add custom rules to deny if not in IP list - this is if you need ip whitelisting, useful if your main domain uses akamai or other edge routing to point to external hosting of subdomains, you can use whitelist to restrict access to the akamai or other servers, though this takes some big lists you must paste of ranges one row at a time. Set any other web app firewall rules you want enforced for allow/deny.
Create Azure Front Door named like you want as an endpoint url e.g. myappfrontdoor will make myappfrontdoor.azurefd.net. in backend pool specify the your public-ip shared dns name (see step 3) like myapptest..cloudapp.azure.com.
This is the important step : in Settings at top of front door designer, disable cert validation. in routing rules config, no condition, forward to backend pool setup in prior step. This ignores the fact that you cannot cert your cloudapp.azure.com endpoint, and wraps it with a *.azurefd.net certificate.
In your azure firewall, Edit NAT rules, set rule name myapp-web-fd-... , tcp, ip address, 147.243.0.0/16 (this is Azure's front door backend ip range). destination should be the firewall's own public ip. destination port 443, translated address should be the target vm's azure internal ip, target port - service port.
Now you will have a site like myappfrontdoor.azurefd.net.
Note that Azure Front Door and WAF have their own pricing costs, so maybe it is cheaper for you to buy a domain. Hopefully you are also using Azure Firewall, though expensive. If not, one could point to public ip directly on NSG or on vm itself but I wouldn't skip having a firewall for a public server. There is a standing Azure enhancement request to get Azure Front Door to recognize certificates, but it was triaged 2 years ago and still not added, so not sure if it will be worked. If it ever does get worked, devs could make own cert auth and self-signed cert with expirations to more securely hook front door to azure internal vm. For now, have to rely on the front door backend setting, waf, and azure firewall to have these things routed.
There are some options in Akamai and other edge routing systems to import cert and self-created authority sort of, but I've not tried that yet, so cannot confirm this would cleanly wrap your azure site without cert errors. You can make a self-signed authority using openssl commands as noted in other posts out and about on the web.
The simplest and cheapest option is to purchase a domain and use a cname dns record to map your new domain to your Azure subdomain address - an "A" record is not required. Also per answer above, a WAF is expensive and possibly unnecessary for a test set up (but a requirement for a production website). You can use Certbot and NGINX to create a free Lets Encrypt certificate for your domain and assign it to your website.
Adding a Public IP Address, Load Balancer, and Network Security Group to your Azure Resource Group may also be required to provide access to your website. This is largely how my test configuration is set up except I'm using a Linux VM, have a single wildcard certificate, and use NGINX to reverse proxy 3 websites.
I have build a new webapp on Azure. So i followed that steps:
Add A Record (A/#/52.173.76.33), a CNAME (CNAME/www/saschamannsde.azurewebsites.net) and a TXT (TXT/#/saschamannsde.azurewebsites.net)
Added a custom domain to the webapp (Then it is listed as available host)
Upload the PFX and CER and bind it to my domain.
Azure now shows me, that it is a valid Certificate with my hostname saschamanns.de and issued by Sectigo RSA Domain Validation Secure Server CA (ID 134d36755287a5e0718554ff9c9103d13f331d34).
If i now typing https://saschamanns.de the browser tells me, i have a false cert, issued for shortener.secureserver.net.
Inside the Supportpage of Azure it tells me two problems:
Certificate mismatch detected (
The hostname saschamanns.de is configured to a Certificate with the thumbprint 134d36755287a5e0718554ff9c9103d13f331d34 on this Azure web app. However, the site returned a certificate with thumbprint 22873d8fefeb318394d1b906a5e4657876552d80.) A traceroute gives me:
https://paste.ubuntu.com/p/5427RCBmMF/
And it looks like it routes to the MS Routes.
DNS resolution error detected (As per the current DNS settings, URL saschamanns.de resolves to 184.168.131.241. The web app on Azure however is configured to listen on 52.173.76.33.)
But i have already set the IP to 52.173.76.33. The other IP comes from my Domain Manager GoDaddy.
Maybe anyone can help to identify the problem?
From the Dig web interface , saschamanns.de is also pointing to 184.168.131.241 . What is this 184.168.131.241 ip ?
saschamanns.de. 599 IN A 184.168.131.241
saschamanns.de. 599 IN A 52.173.76.33
If you browse the web app , certificate ( Thumbprint : 22873d8fefeb318394d1b906a5e4657876552d80) showing in browser is issued to shortener.secureserver.net .
Certificate which is binded to web app is not issued to saschamanns.de
Can you try bind the certificate again to web app by removing the existing one. Hopefully that should resolve the issue.
I also just ran into the same issue. Basically, the reason why I got the certificate mismatch error was according to the Forwarding Feature of GoDaddy.
If you use the forwarding feature - it will add a locked "A record" entry to the domain pointing to ip.secureserver.net which in my case was 184.168.131.241.
However tanner west explains the forwarding issue in a gist article.
In a nutshell, don´t use the forwarding feature and edit the DNS forwarding manually.
This is the feature I am talking about.
I'm trying to use https://mysite.trafficmanager.net that should resolve to https://myfunction.azurewebsites.net without adding my own SSL cert or domain.
When I go directly to https://myfunction.azurewebsites.net the cert is valid, but when I go to https://mysite.trafficmanager.net I get a cert error saying the cert is issued to *.azurewebsites.net
Do I have to purchase my own SSL to get this to work? It seems like the certs should just work within the Azure family and that I'm just missing a configuration setting.
You get a cert error since myfunction.azurewebsites.net have a certificate for *.azurewebsites.net but not *.trafficmanager.net so traffic manager site is not secured unless you have a custom domain + SSL cert.
The azure traffic manager works at DNS level. This means that it does not handle any request, just making the right redirection. The clients connect directly to the selected endpoint, not through Traffic Manager.
If you want to access the endpoint via HTTPS, you just need to bind an SSL certificate on your endpoint. If you want this error to disappear, you can read this Azure networking feedback.
For a dev\test scenario, there are a couple options you may want to
consider:
Buy a real cert and domain/sub-domain for your dev-test setup.
Create a self-signed certificate for your site with the *.trafficmanager.net SAN added to it and install this self-signed cert to the Trusted Certificate Authorities store on your clients to not
get browser warnings.
Ok, I have finally managed to get my node.js container up and running using a scalable container group and a custom domain.
The problem that now remains is: How do you get the self-signed certificate to be used by Bluemix when accessing the app through https://my-app.mydomain.com?
Https works, but it shows the wildcard *.mybluemix.net certificate instead of the one I added to the domain that I added to my organisation. Visiting https://my-app.mybluemix.net is ok since then the wildcard mybluemix.net certificate is valid.
Yes, I have seen this one as well as read the SSL part of the Bluemix docs.
developerWorks: SSL Certificates and Bluemix Custom Domains
Your DNS should use an A record pointing to 75.126.81.68. This IP address is used by Bluemix for SSL traffic in the US-South region.
If you are using an A record with 75.126.81.66 or use a CNAME record pointing to your app's route (e.g. my-app.mybluemix.net), then you will see the *.mybluemix.net certificate instead of your custom certificate that you uploaded to Bluemix and associated to your custom domain.