[Koha] Https and restricting IP access

We would like to secure our Koha installation and would like to know what you've done and your experiences. We use some 3rd party tools like Syndetics, Overdrive ...etc. How does https impact the use of these tools? Were you able to find a workaround? We'd like to restrict IP access at the network level -- not using Koha. If you've done this, how did you accomplish this? We are using different hostnames for OPAC and Staff Client rather than ports 80 and 8080 so can not make policies based on ports. Thank you! -- Chad Roseburg Asst. Director / IT Automation Dept. North Central Regional Library