There was a similar article in sysadmin magazine about chrooting processes. This may work for you. Check their site (sysadminmag.com I think) to see if they posted that one, and maybe daemonnews.org to see if an article was posted there. Then check geocrawler.com for the latest FreeBSD mailing lists,a nd mar.theaimsgroup.com (I think) for up to date OpenBSD (developers of OpenSSH) mailing list. 🙂