I have proxy server that sits in the DMZ. The default site is running the adfs and has a certificate that is about to expire in 2 weeks. I am not sure what are steps involved in applying a new ssl certificate. I know at the least I will install the new certificate(s) in the local store. Go to IIS and change the certificate using the binding settings. Is there any othern place I have update the certificate?
You will likely need to replace the cert for the AD FS servers themselves too. And yes you can replace the set is inetmgr.exe console as you mention.