Configuring An Ipsec Policy - HP 12500 Series Configuration Manual

Configuring an IPsec policy

IPsec policies define which IPsec proposals should be used to protect which data flows. An IPsec policy
is uniquely identified by its name and sequence number.
IPsec policies fall into the following categories:
Manual IPsec policy—The parameters are configured manually, such as the keys, the SPIs, and the
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IP addresses of the two ends in tunnel mode.
IPsec policy that uses IKE—The parameters are automatically negotiated through IKE.
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Configuring a manual IPsec policy
To guarantee successful SA negotiations, follow these guidelines when configuring manual IPsec policies
at the two ends of an IPsec tunnel:
• The IPsec policies at the two ends must have IPsec proposals that use the same security protocols,
security algorithms, and encapsulation mode.
The remote IP address configured on the local end must be the same as the IP address of the remote
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end.
At each end, configure parameters for both the inbound SA and the outbound SA and make sure
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that different SAs use different SPIs.
The local inbound SA must use the same SPI and keys as the remote outbound SA. The same is true
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of the local outbound SA and remote inbound SA.
The keys for the local and remote inbound and outbound SAs must be in the same format. For
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example, if the local inbound SA uses a key in characters, the local outbound SA and remote
inbound and outbound SAs must use keys in characters.
Follow these guidelines when you configure an IPsec policy for an IPv6 routing protocol:
You do not need to configure ACLs or IPsec tunnel addresses.
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• Within a certain routed network scope, the IPsec proposals used by the IPsec policies on all switches
must have the same security protocols, security algorithms, and encapsulation mode. For OSPFv3,
the scope can be directly connected neighbors or an OSPFv3 area. For RIPng, the scope can be
directly connected neighbors or a RIPng process. For IPv6 BGP, the scope can be directly connected
neighbors or a neighbor group.
All SAs (both inbound and outbound) within the routed network scope must use the same SPI and
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keys.
• Configure the keys on all switches within the routed network scope in the same format. For example,
if you enter the keys in hexadecimal format on one switch, do so across the routed network scope.
Before you configure a manual IPsec policy, configure ACLs used for identifying protected traffic and
IPsec proposals. ACLs are not required for IPsec policies for an IPv6 protocol.
To configure a manual IPsec policy:
Step
1. Enter system view.
2. Create a manual IPsec
policy and enter its view.
Command
system-view
ipsec policy policy-name
seq-number manual
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Remarks
N/A
By default, no IPsec policy exists.