You might be interested in the setup here. We've been there, done that. We put the emphasis on building systems that are maintainable. We can provide support and maintenance on these popular operating systems. We can provide initial installation and configuration.
Ongoing maintenance is a specialty.
Training for your support people is also available. TurnStyle Firewall System FireWall-1 FWTK Various IP filter packages Rates depend on the job, and the total time commitment involved. Lower rates will be considered for charitable or activist organizations. Pro-bono rates are sometimes available. We host a number of domains.