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Creating Local Site Policies
ETEP CLI User Guide
69
Configuring a Local Site Encryption Policy
You can create a manual key encryption policy for Layer 2 or Layer 3 traffic. Layer 2 selectors protect
traffic based on Ethertype or VLAN ID. Layer 3 selectors can be configured to protect all traffic, specific
subnets, individual hosts, protocols, or ports.
In a manual key policy, the keys that secure the communication between peers are entered manually
rather than being automatically generated as they are in an IKE policy. Manual key policies must be
deployed on each of the peers that form the secure tunnel endpoints. The encryption and authentication
keys must be entered identically on each peer.
Each manual key policy contains two security associations (SAs), one for inbound packets and one for
outbound packets. An SA’s direction is relative to the untrusted network, as shown in
that are inbound to the ETEP come from the remote peer. Outbound packets come from the local peer
and are destined for the untrusted network. You can configure the inbound and outbound SAs
individually, or use the “any” attribute to create both SAs with a single command.
Encryption behavior is dependent on the ETEP’s mode of operation, as summarized in
. When
the ETEP is configured for Layer 2 operation, you must use aes256-cbc and sha1-96-hmac as the
encryption and authentication algorithms. When the ETEP is configured for Layer 3 operation, 3des-cbc
and md5-96-hmac are also accepted as valid encryption and authentication algorithms.
Encryption policies use ESP to provide encryption and authentication. When the ETEP is configured for
Layer 2 operation, it encapsulates the packet payload and leaves the original Ethernet header in the clear
(transport mode). When configured for Layer 3 operation, the ETEP operates in tunnel mode, protecting
the entire IP packet including the IP header.
Figure 11
Inbound and outbound SAs in a manual key policy
To define a manual key encryption policy:
1 Enter local-site policy configuration mode.
admin> configure
config> policies
policies> local-site-policies
local-site-policy>
Table 36
Encryption behavior at Layer 2 and Layer 3
Mode of Operation
Valid Algorithms
Mode
Layer 2
aes256-cbc, sha1-96-hmac
Transport mode
Layer 3
aes256-cbc, 3des-cbc
sha1-96-hmac, md5-96-hmac
Tunnel mode
Содержание ET0010A
Страница 7: ...8 ETEP CLI User Guide Contents...
Страница 15: ...Getting Started 16 ETEP CLI User Guide...
Страница 33: ...User Administration 34 ETEP CLI User Guide...
Страница 55: ...Configuring the ETEP 56 ETEP CLI User Guide...
Страница 97: ...Creating Policies 98 ETEP CLI User Guide...
Страница 101: ...Maintenance 102 ETEP CLI User Guide...
Страница 119: ...Troubleshooting 120 ETEP CLI User Guide...
Страница 123: ...FIPS 140 2 Level 2 Operation 124 ETEP CLI User Guide...
Страница 205: ...Command Reference 206 ETEP CLI User Guide...
Страница 211: ...Index 212 ETEP CLI User Guide...