Enable "Hot Back Up" IP Host Names
When enabled, alternate IP host names and TCP ports can be specified to connect to if the primary connection attempt fails for some reason. Use the Add..., Edit..., Remove, Up and Down buttons to configure the back up IP host names in the list. The first IP host name and TCP port in the list also appears as the IP host name and TCP port in the Connection tab. If you move or modify the primary address in this list, the values in the IP Host Name and TCP Port fields on the Connection tab will reflect the change.
Enable Keep Alive
When enabled, PASSPORT will send a periodic timing signal to the gateway or mainframe to ensure that the connection is not idle long enough to be terminated. This feature can also be used to keep an internet connection "alive".
Timer Value (min)
This value specifies the regular interval at which PASSPORT will send a timing signal. The value may be between 1 minute and 1440 minutes (1 day). The default value is 15 minutes.
Keep Alive Sequence
The Keep Alive Sequence option allows you to choose between two timing signal options: NOP or Timing Mark. The default setting is NOP.
Note: When using a dial-in connection with an internet service provider (ISP), you may be disconnected after a period of idle time, even though the Enable Keep Alive feature is selected. To minimize the chances of this occurring, you can change the gateway port number to something other than 23 (the default telnet port) in the PASSPORT configuration.