RBH Electronics Security Products [India] P Ltd. Manufactures TCP/IP LAN Gateway with Password Protection. RBH Electronics Security Products [India] P Ltd. Manufactures Integrated Access Control and Enterprise Security Management System. The TCP/IP LAN Gateway with Password Protection is an inexpensive way to connect Access Control panels to a host via the Internet or a local/wide area network. The TCP/IP LAN Gateway with Password Protection automatically detects and adjusts network connection speed. For complex configurations a variety of adjustable settings are available.