MAESTRO WIRELESS SOLUTIONS | Services193E SERIES | USER MANUAL VERSION 2.2.0 http://support.maestro-wireless.comIPSec (Internet Protocol Security)12.1.2Network > Interface > IPSecIP Security (IPSec) is a suite of protocols designed for cryptographicallysecure communication at the IP layer (layer 3). Maestro Router E220uses IPSec standard i.e. IPSec protocol to protect traffic. In IPSec, theidentity of communicating users is checked with the user authenticationbased on Digital Certificates, public keys or Pre-shared Keys.IPSec is used for both Gateway-to-Gateway VPN connection and Client-to-Gateway VPN connection.Click Add button on IPSec page.Select the type of IPSec-VPN connection and click Add button forrespective connection.