CISC-RT-000460 - The Cisco router providing connectivity to the Network Operations Center (NOC) must be configured to forward all in-band management traffic via an IPsec tunnel.

Information

When the production network is managed in-band, the management network could be housed at a NOC that is located remotely at single or multiple interconnected sites. NOC interconnectivity, as well as connectivity between the NOC and the managed network, must be enabled using IPsec tunnels to provide the separation and integrity of the managed traffic.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

This requirement is not applicable for the DODIN Backbone.

Ensure that all traffic from the managed network to the management network is secured via IPsec tunnel as shown in the configuration examples below.

Step 1: Configure the ACL for the management network as the destination. This ACL will be defined in the crypto as the interesting traffic to be forwarded into the IPsec tunnel.

R4(config)#ip access-list extended MGMT_TRAFFIC_ACL
R4(config-ext-nacl)#permit ip 10.1.34.0 0.0.0.255 10.22.2.0 0.0.0.255
R4(config-ext-nacl)#exit

Step 2: Create an ISAKMP policy for Phase 1 negotiations

R4(config)#crypto isakmp policy 10
R4(config-isakmp)#hash sha256
R4(config-isakmp)#authentication pre-share
R4(config-isakmp)#exit

Step 3: Specify the pre-shared key and the remote peer address

R4(config)#crypto isakmp key 0 xxxxxx address 10.1.12.1

Note: Digital certificates can be utilized as an alternative.

Step 4: Create the Phase 2 policy for the data encryption

R4(config)#crypto ipsec transform-set TRANS_SET ah-sha256-hmac esp-aes
R4(cfg-crypto-trans)#mode tunnel
R4(cfg-crypto-trans)#exit

Step 5: Create the crypto map

R4(config)#crypto map IPSEC_MGMT_MAP 10 ipsec-isakmp
R4(config-crypto-map)#set peer 10.1.12.1
R4(config-crypto-map)#match address MGMT_TRAFFIC_ACL
R4(config-crypto-map)#set transform-set TRANS_SET
R4(config-crypto-map)#end

Step 6: Apply the crypto map to the external interface
R4(config)#int g0/2
R4(config-if)#crypto map IPSEC_MGMT_MAP

Item Details

Audit Name: DISA Cisco IOS Router RTR STIG v3r4

Category: SYSTEM AND COMMUNICATIONS PROTECTION

Plugin: Cisco

Control ID: 6ea77a5b499ee3dba23bf62a941949f4f0ab97f24f1dede81940b54141f43c82

Detections

Analytics

CISC-RT-000460 - The Cisco router providing connectivity to the Network Operations Center (NOC) must be configured to forward all in-band management traffic via an IPsec tunnel.

Information

Solution

See Also

Item Details