A secure server is a web server that uses Secure Socket Layers (SSL) for communication. Security is improved because the data sent and received are encrypted and because the web client and the web server can identify one another. Secure servers use https: rather than http: in their URL. The default port number for a secure server is 443.
With regards to the LifeKeeper Microsoft IIS Recovery Kit and LifeKeeper, there is no difference in running a secure IIS Web site. In fact, IIS allows the same Web site to have both a TCP port and SSL port. There is no change in the startup or operational procedures. Therefore, after a key is generated and a corresponding digital certificate is installed in IIS, you may configure and run with SSL ports.