ARST-RT-000420 - The out-of-band management (OOBM) Arista gateway router must be configured to forward only authorized management traffic to the Network Operations Center (NOC).

Information

The OOBM network is an IP network used exclusively for the transport of OAM&P data from the network being managed to the OSS components located at the NOC. Its design provides connectivity to each managed network device, enabling network management traffic to flow between the managed network elements and the NOC. This allows the use of paths separate from those used by the managed network.

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.

Configure filters based on port, source IP address, and destination IP address to permit only authorized management traffic into IPsec tunnels or the OOBM interface used for forwarding management data.

Step 1: To configure an ACL to allow only management traffic to be forwarded through the OOBM interface or IPsec tunnel, execute the command 'sh ip access-list'.

ip access-list OOBM_to_MGMT
10 permit tcp 10.10.10.0/24 host 10.20.10.1 eq ssh
20 permit ip 10.10.10.0/24 192.168.10.0/24
30 permit udp 10.20.20.0/24 any eq bootps snmp

Step 2: To apply the ACL outbound on the OOBM interface, execute the command 'sh run int Eth YY'.

interface ethernet 1
description OOBM to MGMT link
ip access-group OOBM_to_MGMT out

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Arista_MLS_EOS_4-2x_Y24M07_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-7a., CAT|II, CCI|CCI-001097, CCI|CCI-004931, Rule-ID|SV-256023r991786_rule, STIG-ID|ARST-RT-000420, Vuln-ID|V-256023

Plugin: Arista

Control ID: fc8b8243712f93a5d8caa6e24862f3d4aaea402a96e513b28ae3c498e26c1bf2