I was wondering if it's possible to use different certificate on websites that have the same port number. I have about 15 websites that are sharing the same port number 443.
When I change a certificate of one, be it via Powershell or directly through IIS, it changes the certificate of all the other websites on that port. However, if I create a test website on a different port, say 441, IIS allows me to have different certificates on them.
I was wondering if it's possible (preferably via Powershell) to have my IIS sites created and configured in such a way that they can have different SSL certificates assigned to them?
Yes, it is possible.
You need to set different host name for each site so that the site can be accessed by https://hostname:443, not https://localhost:443 or https://serverIP:443.
When setting binding of the site, check the Require Server Name Indication.
Related
I have one scenario where I am working on the IIS Website Configurations for URL Routing.
I have added the website and Import the required Certificates on the server.
My scenario is (I have multiple website URLs and two SSL Certs - as below):
qatest1.abc.com
qatest2.abc.com
qatest3.abc.com
Above 3 URLs need to be configured on one SSL Certificate - which is QA Certificate.
Another URL is:
perftest.abc.com
And for this URL there is a separate certificate as PERF (performance) certificate.
This is how the Task is given to me to configure the IIS Settings on MS IIS 10.
Now the Issues which I am facing is:
Not able to configure all the URLs configuration on the same IIS, as per the task given to me I am supposed to configure them all on the same IIS.
Getting a strange message (image attached) and it won't allow me to configure all my above website URLs on the same machine, on the same IIS.
Also trying to read about SNI (But Not sure about how to make use of SNI in this case).
Need help from IIS Experts who can support me on this activity to complete.
you could check the Server Name Identification by using this you can avoid the certificate prompt.
This feature offers an easier solution to hosting multiple sites that have a different or individual SSL on a single IP address.
Each HTTPS binding requires a unique IP/port combination because the Host Header cannot be used to differentiate sites using SSL.This is because the host header is not visible during the SSL handshake.
Server Name Indication (SNI) allows the server to safely host multiple TLS Certificates for multiple sites, all under a single IP address.
#1 - its possible via CLI commands (appcmd & netsh) or scripting (PowerShell) and programming (c#) but not with the IIS Manager GUI afaik.
#2 - (see #1). IIS Manager is stupid and will overwrite existing bindings with the last certificate selected. You end up with bindings attached to the wrong certificate if you click Yes. This is a limitation of IIS Manager GUI not IIS.
#3 - You want SNI turned on. It means you can have multiple certificates associated with the same IP address. Without SNI you would need 1 IP address per certificate
These 2 links will give you an idea how to use appcmd and netsh - this is the quickest/easiest way to create your desired configuration.
Adding a HTTPS binding to a site
Binding a certificate with netsh
If you know PowerShell("POSH") you can use the IISAdministration PowerShell cmdlet New-IISSiteBinding to create bindings and associate with a certificates thumbprint (though netsh is still useful for debugging and fixing issues).
Either approach your really configuring 2 things - IIS' bindings and Windows/SChannel/HTTPS.sys (the operating system component actually responsible for the 'S' in 'HTTPS'). Sometimes they get out of sync and the easiest fix is to delete and re-create the bindings (after clicking yes to "At least one other site is using the same HTTPS binding..." for example).
Few tips:
Once you start using this configuration IIS Manager or Windows Update/software installs will probably break your bindings at some point. Write a script that can remove and re-create all your bindings for port 443(only!) so you can easily fix future issues.
If you use netsh - its very fussy about the syntax. Order and spacing of parameters are important when using command netsh http add sslcert.
While your testing netsh http show sslcert and netsh http delete sslcert are very useful to try different configurations (this wont delete the cert, just the binding)
Cert needs to be in the Machine certificate store and make a note of the path. When using POSH or netsh always specify both certificate thumbprint and the store\path where the cert was installed.
If you need a default HTTPS binding on the IIS Site (eg load balancer healthchecks etc) add it before any named HTTPS bindings.
Final aside - if your domains are all 1 level under abc.com getting a wildcard certificate would save you a lot of bother. a single *.abc.com certificate would cover all your domains and you can avoid this limitation entirely.
Good luck!
In my example I am using https://portmap.io VPN service which is not exactly a pure VPN services but still uses VPN technology to break my ISP restrictions, allowing portforwarding to my own home server running in my android device.
So if I run 193.161.193.99:1200, my website gets browsed. The port 1200 is mapped to my local python server port running on port 1000. Port 1200 is given by the VPN provider.
However, if I try 193.161.193.99 without the port 1200. The portmap VPN official website gets called, cause that's the websites' IP. So basically each user of this VPN services has there own port to work with.
Question: I don't have any public IP totally in my own control to get an SSL certificate, which requires a file upload verification by the CA (CSR). So, it it anyhow possible to get an SSL certificate using 193.161.193.99:1200 ?
Note: Services like zerossl.com accepts to provide a certificate for ipv4 public addresses. So it not always essential to use a FQDN to get a cert.
Yes this is possible, you will need a domain pointing to the VPN/portmap IP and then obtain a SLL certificate from Let's Encrypt for that domain. This can be your own domain or one provided by a Dynamic DNS Service such as Duck DNS.
I'll describe how I have done it with Docker and Duck DNS in detail:
Sign in to Duck DNS, create a subdomain and point it to the VPN/portmap IP, note the token at the top of the page.
Deploy a docker container from LinuxServer.io's SWAG Image
Make sure to provide the required environment variables in your docker-compose.yml (or with docker run command):
- VALIDATION=duckdns
- DUCKDNSTOKEN={your token}
- URL={yourdomain}.duckdns.org
Note: If you want everything behind your VPN, there is a great docker container called gluetun which allows you to run the swag container behind your VPN
You will find your SSL certificates in the /config/etc/letsencrypt/live/{yourdomain}.duckdns.org folder of the SWAG container. Use those for the website/service that is running behind your forwarded port.
The certificates will get updated automatically 30 days before they expire. There is also a PKCS#12-file privkey.pfx, which is needed for services like emby. For more information on SWAG see the LinuxServer.io Docs. You may or may not need another container running that updates the Duck DNS IP periodically, I'm not sure if the SWAG container already does that.
All of this can of course be done without Docker and with your own domain. In this case you will need to map your domain or subdomain to the VPN IP in the DNS Record section of your domain provider. And then use certbot to create certificates for that domain. Docker just automates the renewal part.
I'm hosting a couple of sites on IIS 8.5 (Windows server 2012-R2).
These https sites are bound using a UCC SSL certificate from GoDaddy.
I created a new site on IIS and added binding using the "IIS Express SSL Certificate".
This caused the rest of my sites to stop responding to https requests.
I had to reassign the UCC SSL so my sites could work with HTTPS again, but I was wondering if anyone knows why this happens. Having these things happening in a production server is a nightmare so I was wondering if anyone could shed some light on this matter.
This usually happens when you use the same IP or port with all the HTTPS sites. if you want to use the same binding with the different hostname you could use the SNI(Server Name Indication).
Server Name Indication (SNI), which is a TLS extension to include a virtual domain as a part of SSL negotiation. What this effectively means is that the virtual domain name, or a hostname, can now be used to identify the network endpoint. In addition, a highly scalable web hosting store has been created to complement SNI. The result is that the secure site density is much higher on Windows Server 2012 and it is achieved with just one IP address.
It should be noted that in order for this feature to be used, your client browsers have to support SNI. Most modern browsers support SNI; however, Internet Explorer (of any version) on Windows XP does not support SNI.
When you assign the https binding to the site you just need to check the Require Server Name Indication checkbox.
Here is my scenario:
default website on IIS 6.0 is already protected by an SSL cert with common names covering the following:
domainname.com
www.domainname.com
I have a new website on the same IIS server and need to protect it with an SSL cert with the following common name:
subdomainname.domainname.com (same domainname as default)
I do not have the freedom to add a new IP address to the server. Not an infrastructure friendly request for whatever reasons.
We also have our Exchange webmail protected by another cert on another server with:
webmail.domainname.com
I do not believe I can use a wildcard cert because exchange is on a different server, correct?
Whether I can or not use a wildcard server, how can I protect the new subdomain on the main IIS server with a new cert? Do I replace the cert on the default with the new common name representing the subdomain web site and the default web site common names. Can I assign the same cert on the same server with all common names needing protection to multiple websites on IIS 6.0?
Thanks for any help in getting this resolved.
You are correct, you would need multiple signed certificates for your servers. Godaddy offers certs for single-servers only, AFAICT. DigiCert offers multi-domain, multi-server certificates. I've never used them, so I can't vouch for anything they offer, but it shows that what you want IS available in the marketplace.
You can get a single cert and use it on multiple servers so long as the DNS entries map out to the correct servers.
Go Daddy offers several cert types and they don't make it clear how to deal with this issue.
Standard (Turbo) SSL 1 domain ~$30
Standard Multiple Domain (UCC) SSL Up to 5 Domains ~$90
Standard (Turbo) Wildcard SSL ~$200
Get the 5 domain cert with
domainname.com
www.domainname.com
subdomainname.domainname.com
webmail.domainname.com
all listed on the one cert. Complete the request on the server you started the request from then use the tools built into the windows servers to copy the cert from one server to another. Doing so doesn't remove it from the first server and adds it to the second.
I did this not too long ago. My Web server is 2008 and the mail server is 2003. In that combination I had to export as a .pfx file and then import the .pfx. If you do it from 2003 to 2003 you may be able to use the copy from another server option and save manually moving the exported file around.
In my case the cert mentions "Certificate Subject Alt Name" with
Not Critical
DNS Name: www.adomain.com
DNS Name: adomain.com
DNS Name: www.adomain.com
DNS Name: mail.adomain.com
Looks like one of those lines is a duplicate but hey it works. I don't know why the cert uses the terminology of "Not Critical" to head that section.
IIS won't let you put two sites on the same IP/port combo but it will let you put the same SSL on two different sites. The secondary site will have to use something other than 443 if you don't have the option of using a different IP address.
I've got an ssl certificate for what I think is my domain and I want to apply it to two separate applications in that domain that run under ASP classic in IIS on Windows 2000.
I have the following stupid questions:
Are certificates issued for URLs or domains? Or subdomains?
Can I use the same cert for multiple websites (applications) within that domain, or do I need a separate one?
Can I inspect the cert file to determine for what or to whom it's issued?
Thanks!
1) Web certs are issued to a domain. Specifically the CN attribute of the certificate must match the domain used to access your site.
2) Certs are usually install per host (or virtual host). If you had cert for the domain wwwapps.domain.tld you could have one app at /calendar, and one app at /contacts.
3) Yes, depending on the format and where it is, this can be easy or hard. If you have a crt file and you are running under windows, just click on it. You should see the details.
If you want to inspect a certificate that is installed on a site, you usually have to click on the padalock icon.
On windows you can also open up the MMC, add the certificate snapin and see any/all installed certificates on the local machine, or your profile.
They are issued for domains. Subdomains require their own certs. You can buy a special wildcard cert for your domain that lets you create certs for your subdomains, but they are more expensive.
If you buy a cert for mydomain.com, you can use it for anything that starts with https://mydomain.com/
Yes. You can do this for any certs. check out the lock icon in your browser's address bar.
It's usually issued to a single web server host (basically a computer cname or a record) like foo.bar.com where foo is one name for the host which the certificate request was generated for and bar.com is its domain.
Thus it will work for any application or virtual directory that responds to https://foo.bar.com - like https://foo.bar.com/planner/ - but nothing more.
For https://*.bar.com you can get a wildcard certificate that lets you handle any number of hosts without any hassel - at a greater cost.
There are also multiple-SAN (UCC) certificates that can contain a specific number of host names in a single certificate like webmail.bar.com and autodiscover.bar.com for an Exchange 2007 server serving both web access and Outlook Anywhere from the same physical machine and NIC.
If it's in .cer format simply opening it in Windows will show the details, if it's a pfx or in some other transport format you'd need to import it.
You basically install the certificate on a Web Site node in IIS and anything you can fit beneath that (or modify using a modern firewall in front of it to still respond to the issued common name foo.bar.com) will work.
Thanks! I enabled port 443 for the site at the domain on the cert, loaded the cert via directory security in IIS for each subfolder, and enabled 128-bit encryption. Worked like a champ!