Configuring Microsoft Windows IP Security to Operate with HP-UX IPSec

The filter matches packets with the following addresses:
Source address: 10.1.1.1
Destination address: 10.2.2.2
If the filter is mirrored, it also matches packets with the following addresses:
Source address: 10.2.2.2
Destination address: 10.1.1.1
The mirror setting only affects Windows IP Security behavior before IPsec SAs are established.
If the Windows IP Security module receives a packet via an existing SA, it does not verify that
the packet address fields match the address filter used when the SA was established.
By comparison, HP-UX IPSec host and tunnel policies are always mirrored. (Gateway policies
are the only HP-UX IPSec policies that are not mirrored.)
Filter Selection
Windows does not allow you to specify the search or priority order for the filters in a rule or for
the order of rules in a policy. The Windows IP Security module automatically creates an internal
filter list and orders the filters from most specific to least specific.
HP-UX IPSec allows you to specify a priority value for IPsec and IKE policies. HP-UX IPSec
searches the policies in priority order within each type of policy. Lower priority values have
higher priority (priority value 1 is the highest priority).
If you do not specify a priority value when creating a policy on HP-UX, ipsec_config
automatically assigns a priority value so that the new policy is the last policy searched before
the default policy within its policy type. The output of the ipsec_config show command
includes the priority values for configured policies.
IKE Parameter Selection
On HP-UX systems, only one IKE SA proposal is used for each peer. You can configure multiple
IKE policies, but only one IKE policy is selected per peer, and each IKE policy specifies only one
IKE SA. During IKE negotiations, IKE searches policies in priority order and selects the first
policy with a matching remote address. IKE then uses the IKE SA parameters to send an IKE SA
proposal, or to evaluate the IKE SA proposal(s) it receives.
On Windows systems, you can configure a set of multiple IKE SA proposals, but only one set
per IP Security policy, and only one IP Security policy can be in use (assigned) on the system.
IKE SA Key (Master Key) Lifetime Values
IKE SA key lifetimes (referred to as Master key lifetimes on Windows systems) specify the
maximum lifetimes for IKE SA keys and are specified by units of time (seconds). In addition,
users can specify the maximum number of IPsec SA negotiations that can be completed per IKE
SA (“Maximum Quick Modes” (page 43)).
HP-UX IKE SA Lifetime Values
The HP-UX IPSec default preferred lifetime value for IKE SAs is 28,800 seconds (eight hours).
If the HP-UX system initiates IKE SA negotiations, the HP-UX IKE daemon proposes the preferred
lifetime value to the remote system. The remote system may process this value in any manner
according to the IPsec protocol suite.
If the remote system initiates IKE SA negotiations and sends a proposed value that is longer than
(less secure than) the HP-UX preferred value, HP-UX sends an IKE NOTIFY message with its
preferred value, and this value is used for the SA.
If the remote system initiates IKE SA negotiations and sends a proposed lifetime that is the same
or more secure (shorter than) the HP-UX preferred value, the HP-UX IKE daemon accepts the
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