How can we block open proxy use? Either transparent or non-transparent. We looked at using l7-filter but there must be an acl or some config option to block users from accessing outside proxy servers. We have a school in need of this. Yes? No? Thank you in advance. Thomas J. Raef e-Based Security, LLC www.ebasedsecurity.com 1-866-838-6108 "You're either hardened, or you're hacked!"