Digi IX10, User Manual

Page: 265 / 874

Virtual Private Networks (VPN) IPsec
IX10 User Guide 265
a. For IKE version , select either IKEv1 or IKEv2. This setting must match the peer's IKE
version.
b. Initiate connection instructs the device to initiate the key exchange, rather than waiting
for an incoming request. This must be disabled if Remote endpoint > Hostname is set to
any .
c. For Mode , select either Main mode or Aggressive mode .
d. For IKE fragmentation , select one of the following:
n If supported by the peer : Send oversized IKE messages in fragments, if the peer
supports receiving them.
n
Always : Always send IKEv1 messages in fragments. For IKEv2, this option is
equivalent to If supported by the peer .
n
Never : Do not send oversized IKE messages in fragments.
n
Accept : Do not send oversized IKE messages in fragments, but announce support
for fragmentation to the peer.
The default is Always .
e. For Enable padding , click to disable the padding of IKE packets. This should normally not
be disabled except for compatibility purposes.
f. For Phase 1 lifetime, enter the amount of time that the IKE security association expires
after a successful negotiation and must be re-authenticated.
Allowed values are any number of weeks, days, hours, minutes, or seconds, and take the
format
number { w|d|h|m|s }.
For example, to set Phase 1 lifetime to ten minutes, enter 10m or 600s .
g. For Phase 2 lifetime, enter the amount of time that the IKE security association expires
after a successful negotiation and must be rekeyed.
Allowed values are any number of weeks, days, hours, minutes, or seconds, and take the
format
number { w|d|h|m|s }.
For example, to set Phase 2 lifetime to ten minutes, enter 10m or 600s .
h. For Lifetime margin, enter a randomizing amount of time before the IPsec tunnel is
renegotiated.
Allowed values are any number of weeks, days, hours, minutes, or seconds, and take the
format
number { w|d|h|m|s }.
For example, to set Lifetime margin to ten minutes, enter 10m or 600s .
i. Click to expand Phase 1 Proposals .
i. Click

to create a new phase 1 proposal.
ii. For Cipher , select the type of encryption.
iii. For Hash , select the type of hash to use to verify communication integrity.
iv. For Diffie-Hellman group , select the type of Diffie-Hellman group to use for key
exchange.
v. You can add additional Phase 1 proposals by clicking

next to Add Phase 1
Proposal .