The Dial-in URL works as a global URL for the workload of all your SIP domains. For example, you don’t need to tie the web conferencing service as a SAN to a SIP domain. But fortunately, you don’t need to include every subject URL for each SIP domain as a SAN. In such a case you need to have every SIP domain in each certificate. If more than one domain is hosted in your Skype for Business deployment, the complexities of deployment increase. Official requirements for Edge services are as follows: Each SIP domain must have at least two SANs: one for SIP service and another just for a domain.įor AV Edge service we don’t need a SAN certificate. For web conferencing and every SIP domain FQDN you’ll need additional SANs.
Once you’ve done that, your edge access FQDN should also be in the list of SANs. Note that you can’t put the wildcard value in the subject name.įor your edge server certificate, the subject name must have the FQDN of your edge access service. As a result, the officially supported certificate requirements are as follows: Just keep in mind that certificates with a wildcard as subject name won’t work as they’re unsupported.
Not only your partners will frustratingly give up on this model, you’ll also learn soon that Office 365 integration and a variety of other services will also not work this way.
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Again, you may try to save money by asking your users to install your internal root certificate on their devices, but as your company will grow it’ll be neither scalable nor manageable. In order to make your Skype for Business server externally accessible you’ll have to have trusted certificates for external services too. Now let’s talk a bit about the external services as well. We talked about the importance of using a trusted certificate for internal servers. Use Trusted Certificates for External Services Too Then better to stay away from all this trouble and use a trusted certificate from your internal certificate authority. For instance, if your Active Directory domain isn’t a publicly routable domain, you won’t be allowed to use a public certificate. Besides that, in many cases, you may not even be allowed to use public certificates. On the other hand, if you have a trusted SSL certificate for your internal server, the transition will be a breeze.Ģ. However, if you used a public certificate for your internal Skype for Business server, you’re likely to encounter a roadblock.Ĭonsider an example where you buy a new company – when you do that and decide to add the employees of that company as users on your Skype for Business deployment, as soon as you add the new SIP address to your topology you’ll find that existing certificates for many of your won’t be valid anymore. In such a scenario if you have a trusted SSL certificate, you’ll not have many problems. As your company grows, your Skype for Business deployment will also have to scale to meet the growing demands of your business. You may save money by implementing a public SSL certificate on your internal Skype for Business server, but there’s a very good chance that it will cause problems.ġ. Use Trusted SSL Certificates for your Internal Server In this article, we’re going to do just that. Therefore, it makes sense to understand the Microsoft supported a model of SSL/TLS certificate implementation before deploying Skype for Business.
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