Digi Connect IT 4 User Manual page 331

Virtual Private Networks (VPN)
16. (Optional) Configure dead peer detection:
Dead peer detection is enabled by default. Dead peer detection uses periodic IKE transmissions
to the remote endpoint to detect whether tunnel communications have failed, allowing the
tunnel to be automatically restarted when failure occurs.
a. Change to the root of the configuration schema:
(config vpn ipsec tunnel ipsec_example ike phase2_proposal 0)> ...
(config)>
b. To disable dead peer detection:
(config)> vpn ipsec tunnel ipsec_example dpd enable false
(config)>
c. Set the number of seconds between transmissions of dead peer packets. Dead peer
packets are only sent when the tunnel is idle. The default is 60.
(config)> vpn ipsec tunnel ipsec_example dpd delay value
(config)>
d. Set the number of seconds to wait for a response from a dead peer packet before
assuming the tunnel has failed. The default is 90.
(config)> vpn ipsec tunnel ipsec_example dpd timeout value
(config)>
17. (Optional) Create a list of destination networks that require source NAT:
a. Add a destination network:
(config)> add vpn ipsec tunnel ipsec_example nat end
(config vpn ipsec tunnel ipsec_example nat 0)>
b. Set 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.
(config vpn ipsec tunnel ipsec_example nat 0)> dst value
(config vpn ipsec tunnel ipsec_example nat 0)>
18. Configure policies that define the network traffic that will be encapsulated by this tunnel:
a. Change to the root of the configuration schema:
(config vpn ipsec tunnel ipsec_example nat 0)> ...
(config)>
b. Add a policy:
(config)> add vpn ipsec tunnel ipsec_example policy end
(config vpn ipsec tunnel ipsec_example policy 0)>
c. Set the type of local traffic selector:
Digi Connect IT® 4 User Guide
IPsec
331