LMN's EdgeSentry ES-304 is a robust, cost effective network monitor and security appliance that manages security and device availability for your security network inside the firewall. The EdgeSentry family of products allow an average technician to map, monitor, harden, secure and document a security network in a matter of minutes. EdgeSentry integrates with the site’s layer 2 managed switches via secure protocols and provides a simplified interface to configure them for security. With the switch interface in place, you can find any device on the network with a few clicks and lock/unlock any network port. No recurring license fees necessary.