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1.41 CISC-RT-000400

Information

The Cisco out-of-band management (OOBM) gateway router must be configured to transport management traffic to the Network Operations Center (NOC) via dedicated circuit, MPLS/VPN service, or IPsec tunnel.

GROUP ID: V-216768RULE ID: SV-216768r991934

Using dedicated paths, the OOBM backbone connects the OOBM gateway routers located at the edge of the managed network and at the NOC. Dedicated links can be deployed using provisioned circuits or MPLS Layer 2 and Layer 3 VPN services or implementing a secured path with gateway-to-gateway IPsec tunnels. The tunnel mode ensures that the management traffic will be logically separated from any other traffic traversing the same path.

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 a dedicated circuit, MPLS/VPN service, or IPsec tunnel is deployed to transport management traffic between the managed network and the NOC. If an IPsec tunnel is to be used, the steps below can be used as a guideline.

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.

RP/0/0/CPU0:R3(config)#Ipv4 access-list MGMT_TRAFFIC_ACLRP/0/0/CPU0:R3(config-ipv4-acl)#permit ip 10.1.34.0 0.0.0.255 10.22.2.0 0.0.0.255

Step 2: Create an ISAKMP policy for Phase 1 negotiations.

RP/0/0/CPU0:R3(config)#crypto isakmp policy 10RP/0/0/CPU0:R3(config-isakmp-policy)#authentication pre-shareRP/0/0/CPU0:R3(config-isakmp-policy)#hash sha256RP/0/0/CPU0:R3(config-isakmp-policy)#encryption aes 256RP/0/0/CPU0:R3(config-isakmp-policy)#exit

Step 3: Configure the keyring to be used for ISAKMP to authenticate the remote side during IKE negotiation.

RP/0/0/CPU0:R3(config)#crypto isakmp keyring ISAKMP_KEYRINGRP/0/0/CPU0:R3(config-crypto-keyring)#pre-shared-key address 255.255.255.255 key xxxxxRP/0/0/CPU0:R3(config-crypto-keyring)#exit

Step 4: Configure the IPsec transform set.

RP/0/0/CPU0:R3(config)#crypto ipsec transform-set IPSEC_TRANS esp-aes 256 esp-sha256-hmacRP/0/0/CPU0:R3(config-transform-set IPSEC_TRANS)#mode tunnel

Step 5: Configure the IPsec profile.

RP/0/0/CPU0:R3(config)#crypto ipsec profile IPSEC_NOC_PROFILERP/0/0/CPU0:R3(config- IPSEC_NOC_PROFILE)#set pfs group 16RP/0/0/CPU0:R3(config- IPSEC_NOC_PROFILE)#match MGMT_TRAFFIC_ACL transform-set IPSEC_TRANSRP/0/0/CPU0:R3(config- IPSEC_NOC_PROFILE)#exit

Step 6: Configure the IPsec virtual interface.

RP/0/0/CPU0:R3(config)#interface tunnel-ipsec 22RP/0/0/CPU0:R3(config-if)#profile IPSEC_NOC_PROFILERP/0/0/CPU0:R3(config-if)#tunnel source GigabitEthernet0/0/0/2RP/0/0/CPU0:R3(config-if)#tunnel destination x.1.22.2RP/0/0/CPU0:R3(config-if)#end

See Also

https://workbench.cisecurity.org/benchmarks/23599

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-7a., CAT|II, CCI|CCI-001097, CCI|CCI-004891, Rule-ID|SV-216768r991934_rule, STIG-ID|CISC-RT-000400, Vuln-ID|V-216768

Plugin: Cisco

Control ID: 53aed066676b3d4572df5bc51906a0049e40360baf2c2afe87adae6801f19701