F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices VPN Configuration Guide-6PW100
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Table 14 Hardware compatibility for the "synchronization anti-replay-interval" command
Hardware Feature com
p
atible
F1000-A-EI/F1000-S-EI Yes
F1000-E Yes
F5000 Yes
Firewall module Yes
U200-A No
U200-S No
443BApplying 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 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
444BEnabling 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.
• If the encryption engine is disabled or has failed but the IPsec module backup function is enabled,
the matching packets are discarded.
To enable the encryption engine:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A