Digi Connect EZ 4 User Manual page 367

Virtual Private Networks (VPN)
a. To enable or disable dead peer detection, click Enable.
b. For Delay, type the number of seconds between transmissions of dead peer packets. Dead
peer packets are only sent when the tunnel is idle.
c. For Timeout, type the number of seconds to wait for a response from a dead peer packet
before assuming the tunnel has failed.
23. (Optional) Click to expand NAT to create a list of destination networks that require source NAT.
a. Click  next to Add NAT destination.
b. For Destination network, type the IPv4 address and optional netmask of a destination
network that requires source NAT. You can also use any, meaning that any destination
network connected to the tunnel will use source NAT.
24. See Configure SureLink active recovery for IPsec
25. (Optional) Click Advanced to set various IPsec-related time out, keep alive, and related values.
26. Click Apply to save the configuration and apply the change.
Digi Connect EZ 4/4i User Guide
for information about IPsec Active recovery.
IPsec
367