R3303-HP 6600/HSR6600 Routers Security Configuration Guide

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Command Remar
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10. Configure the global SA
lifetime.
ipsec sa global-duration
{ time-based seconds |
traffic-based kilobytes }
Optional.
By default, time-based SA lifetime
is 3600 seconds and traffic-based
SA lifetime is 1843200 kilobytes.
11. Create an IPsec policy by
referencing an IPsec policy
template.
ipsec policy policy-name
seq-number isakmp template
template-name
By default, no IPsec policy exists.
During IKE negotiation for an IPsec policy with PFS enabled, an additional key exchange is performed.
If the local end uses PFS, the remote end must also use PFS for negotiation and both ends must use the
same DH group. Otherwise, the negotiation will fail.
An SA uses the global lifetime settings when it is not configured with lifetime settings in IPsec policy view.
When negotiating to set up SAs, IKE uses the local lifetime settings or those proposed by the peer,
whichever are smaller.
Applying an IPsec policy group to an interface
An IPsec policy group is a collection of IPsec policies with the same name but different sequence numbers.
In an IPsec policy group, an IPsec policy with a smaller sequence number has a higher priority.
You can apply an IPsec policy group to a logical or physical interface to protect certain data flows. To
cancel the IPsec protection, remove the application of the IPsec policy group.
For each packet to be sent out an IPsec protected interface, the system looks through the IPsec policies in
the IPsec policy group in ascending order of sequence numbers. If an IPsec policy matches the packet,
the system uses the IPsec policy to protect the packet. If no match is found, the system sends the packet out
without IPsec protection.
In addition to physical interfaces like serial and Ethernet ports, you can apply an IPsec policy to virtual
interfaces, such as tunnel and virtual template interfaces, to tunnel applications such as GRE and L2TP.
An interface can reference only one IPsec policy group. An IPsec policy that uses IKE can be applied to
more than one interface, but a manual IPsec policy can be applied to only one interface.
To apply an IPsec policy group to an interface:
Ste
p
Command
1. Enter system view.
system-view
2. Enter interface view.
interface interface-type interface-number
3. Apply an IPsec policy group to the interface.
ipsec policy policy-name
Enabling the encryption engine
The encryption engine is a coprocessor that provides an encryption/decryption algorithm interface for
IPsec processing.
If the encryption engine is enabled, the engine takes over the responsibility of IPsec processing.