Symantec 360R Administration Guide - Page 52

52 Configuring a connection to the outside network Configuring advanced WAN/ISP settings SMTP binding Use SMTP binding when you have two different Internet connections with different ISPs used over different WAN ports. It ensures that email sent by a client goes over the WAN port associated with your email server. If the SMTP server is on the same subnet as one of the WAN ports, the security gateway automatically binds the SMTP server to that WAN port, and you do not have to specify the bind information. To configure SMTP binding See "Advanced tab field descriptions" on page 175. 1 In the SGMI, in the left pane, click WAN/ISP. 2 On the Advanced tab, under Load Balancing, in the Bind SMTP with WAN Port drop-down list, select a binding option. 3 Under DNS Gateway, click Save. Binding to other protocols You can use the routing functionality of the firewall to bind other traffic. You add a a static route to route traffic for the IP address of the destination server to a specific WAN port. See "Configuring routing" on page 48. Failover You can configure the appliance to periodically test the connectivity to ensure that your connection is available to your clients. After the amount of time that you specify (for example, 10 seconds), the appliance issues a PING command to the URL you specify as the Alive Indicator. If you do not specify an Alive Indicator, the default gateway is used. Note: When selecting a URL to check, choose a DNS name or IP address that you are sure will respond to a request, or you may receive a false positive when the connection is actually available. When the WAN port on model 320 fails, the security gateway fails over to the serial port, which is connected to a modem. On model 360 or 360R, if one of the WAN ports fails, the security gateway fails over to the other WAN port. If both WAN ports fail, the security gateway fails over to the serial port.