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29-9
Cisco MDS 9000 Family Fabric Manager Configuration Guide
OL-6965-03, Cisco MDS SAN-OS Release 2.x
Chapter 29 IPsec and IKE
Modifying IKE and IPsec
To verify that IPsec and IKE are enabled using Fabric Manager, follow these steps:
Step 1 Choose Switches > Security > IPSEC in the Physical Attributes pane. You see the IPsec configuration
in the Information pane.
Step 2 Choose the Control tab and verify that the switches you want to modify for IPsec are enabled in the
Status column.
Step 3 Choose Switches > Security > IKE in the Physical Attributes pane. You see the IKE configuration in
the Information pane.
Step 4 Choose the Control tab and verify that the switches you want to modify for IKE are enabled in the Status
column.
Crypto ACL Guidelines
Follow these guidelines when configuring ACLs for the IPsec feature:
• The permit option causes all IP traffic that matches the specified conditions to be protected by
crypto, using the policy described by the corresponding crypto map entry.
• The deny option prevents traffic from being protected by crypto. The first deny statement causes the
traffic to be in clear text.
• The crypto ACL you define is applied to an interface after you define the corresponding crypto map
entry and apply the crypto map set to the interface.
• Different ACLs must be used in different entries of the same crypto map set.
• Inbound and outbound traffic is evaluated against the same outbound IPsec ACL. Therefore, the
ACL's criteria is applied in the forward direction to traffic exiting your switch, and the reverse
direction to traffic entering your switch.
• In Figure 29-4, IPsec protection is applied to traffic between Host 10.0.0.1 and Host 20.0.0.2 as the
data exits switch A's S0 interface enroute to Host 20.0.0.2. For traffic from Host 10.0.0.1 to Host
20.0.0.2, the ACL entry on switch A is evaluated as follows:
–
source = host 10.0.0.1
–
dest = host 20.0.0.2
For traffic from Host 20.0.0.2 to Host 10.0.0.1, that same ACL entry on switch A is evaluated as
follows:
–
source = host 20.0.0.2
–
dest = host 10.0.0.1