Cradlepoint mbr1200 User Manual page 33

User Manual / MBR1200B
generated in phase 2 are exchanged in an encrypted session. Enabling this feature affords the policy greater
security.
Key Lifetime: The lifetime of the generated keys of phase 2 of the IPsec negotiation from IKE. After the time
has expired, IKE will renegotiate a new set of phase 2 keys.
Phase 2 has the same selection of Encryption and DH Groups as phase 1, but you are restricted to only one
DH Group. Phase 2 and phase 1 selections do not have to match. For the Hash selection an added value of
SHA 256_128 (128-bit truncation) is avaliable. The original specification and the Cradlepoint default is 96-bit
truncation, but RFC4868 requires 128-bit. A VPN to newer Cisco or Juniper devices will typically require 128-bit.
Add/Edit Tunnel – Dead Peer Detection
Dead Peer Detection (DPD) defines how the router
will detect when one end of the IPsec session loses
connection while a policy is in use.
Connection Idle Time: Configure how long the router
will allow an IPsec session to be idle before beginning
to send Dead Peer Detection (DPD) packets to the
peer machine. (Default: 30 seconds. Range: 10 – 3600
seconds.)
Request Frequency allows you to adjust the delay
between these DPD packets. (Default: 15 seconds.
Range: 2 – 30 seconds.)
Maximum Requests: Specify how many requests to
send at the selected time interval before the tunnel
is considered dead. (Default: 5. Range: 2 – 10.)
Failback Retry Period: If you have VPN tunnel failover/failback enabled (see below), set the time period
between each check on the primary network after failover. (Default: 10 seconds. Range: 5 – 60 seconds.)
Failover Tunnel and Failback Tunnel: Use these settings to create two tunnels – one as the primary tunnel and
one as the backup tunnel. To configure tunnel failover/failback, complete the following steps:
1. Create two tunnels: one for primary and one for backup. Make sure that both tunnels have the same
Remote Network and that both have Dead Peer Detection enabled.
2. Choose one to be the primary tunnel. Open the editor for this tunnel and make sure Tunnel Enabled is
selected. Then go to the Dead Peer Detection page. Under Failover Tunnel select the other tunnel you
have created.
3. Open the editor for the failover tunnel. Make sure Tunnel Enabled is not selected. On the Dead Peer
Detection page, set the Failback Tunnel to your primary tunnel.
Global VPN Settings
These settings apply to all configured VPN tunnels.
Enable VPN Service: Enabling VPN Service will allow you
to load a certificate for VPN to the router.
Certificate Name: Select the Certificate Name.
IKE / ISAKMP Port: Internet Key Exchange / Internet
Security Association and Key Management Protocol port.
(Default: 500. This is a standard VPN port that usually
does not need to be changed.)
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