This needs to be in a password protected PFX file that contains all intermediates and private key along with the certificate that has the Lyncdiscover, web service and Simple URLs as subject alternative names.Experience has taught me that reverse proxies often take up far too much time on the discussion table because customers usually do not understand their need.They view these as nothing more than pass-thru devices and fail to understand or buy in to the edge network protection they provide when deployed properly.But Skype for Business requires one, so in the end its a choice, external meetings and mobility, or not.
WAP has a dependency on ADFS which is a big turn off to customers who do not have a requirement for ADFS beyond simple reverse proxy. KEMP can be quite an expensive solution depending on throughput and high availability requirements. Azure Application Gateway Adfs Full End ToI admit this is not a qualified solution, but neither is Netscaler, IIS ARR and TMG, but we still use them I would always advise to use qualified solutions for full end to end support. Azure Application Gateway Adfs Free Or BasicApplication Proxy is available on the free or basic version of Azure AD, but the type of proxy we need for this solution is only available in the Premium version. The cost of Azure AD Premium is about 5.50 per user per month, and we only need one licence. Therefore, at 60 per year this makes this the cheapest reverse proxy solution you can buy. However, it does require port 443 outbound to the internet from the Skype for Business Front End Servers. Azure Application Gateway Adfs Install On TheThere is an Azure AD Application Gateway, or connector to install on the front end servers. This is a light weight installation that requires the Azure AD Premium licenced and Global Administrator credentials to login and connect to the Azure AD service. As this is an outbound only connection, the application uses Azure Service BUS messaging system to keep the outbound connection open to avoid connection sleeping. The application connector must be installed on each front end server and rely on the Azure AD Application Proxy health indicator and round robin effect for HA to your on-premises front end pool. However, the benefit of Azure AD Application Proxy reduces to protecting your network from DDoS attacks etc that could hit your perimeter edge firewall and bring down multiple services. For some, this may be a selling point, but I would imagine for many, this would be an over engineered solution that adds unneccessary complication. For the rest of this blog, I will assume that the connector will be deployed to a front end server. If you do not have one, then you can apply for a free trial via the subscriptions shopping cart within Office 365. ![]() Once assigned, you must sign out of Office 365 and sign back in for the licence to take effect. Please also note that it can take 15 minutes or more for your Azure AD to be upgraded to Premium. In the internal URL enter and set the authentication mode to pass-through and press the tick. ![]()
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