http://cypherpunk-handbook.i2p/articles/openbsd.html
Windows has no direct unveil analogue, nor MacOS. 26 - Privilege and users Separation OpenBSD runs all of the standard base system daemons with privilege
and user separation. These include for example bgpd(8), dhclient(8),
dhcpd(8), dvmrpd(8), eigrpd(8), file(1), httpd(8), iked(8), ldapd(8),
ldpd(8), mountd(8),...