content: At this point, you're just better off making your own switch by using all the PCIe slots for LAN NICs and installing something like pfSense  No. no you're not. Switching is a vastly different beast than securing tunnels are and I doubt that a computer would be able to keep up with a 24 port gigabit switch. The problem is in their ScreenOS encryption. ScreenOS is used in the SSG line of firewalls as well as the SRX line of firewalls (the SRX can also be converted to run JunOS). These are boxes that you could replace with a pfSense system and probably even maintain PCI compliance.