### Set IP Address for Incoming Connections Click the IP Address tab page to set the IP address options for incoming client connections. RAS Secure Client Gateway recognizes both IPv4 and IPv6. By default, IPv4 is enabled. If a gateway has IPv6 and IPv4 configured, you can specify whether the clients should be connecting to using IPv4, IPv6, or both. In the Use IP version drop-down list, select the IP version to use and then specify the corresponding properties for the selected version (or both if you selected IPv4 and IPv6). Click the Resolve button to resolve the IP addresses of the RAS Secure Client Gateway depending on the IP version selected. The Bind to the following IPv4/ IPv6 properties define the IP address on which the RAS Secure Client Gateway listens for incoming connections. You can select a specific address or all available addresses. The Optimize connection for the following IPv4/ IPv6 properties can be used when the connection between this gateway and the Parallels Client has a high latency (such as the Internet), this option will optimize traffic for better experience on the Parallels Client. You can select a specific address, all available addresses, or none to disable this option.