AMLS-L3-000170 - The Arista Multilayer Switch must not redistribute static routes to alternate gateway service provider into an Exterior Gateway Protocol or Interior Gateway Protocol to the NIPRNet or to other Autonomous System.

Information

If the static routes to the alternate gateway are being redistributed into an Exterior Gateway Protocol or Interior Gateway Protocol to a NIPRNet gateway, this could make traffic on NIPRNet flow to that particular router and not to the Internet Access Point routers. This could not only wreak havoc with traffic flows on NIPRNet, but it could overwhelm the connection from the router to the NIPRNet gateway(s) and also cause traffic destined for outside of NIPRNet to bypass the defenses of the Internet Access Points.

NOTE: Nessus has not performed this check. Please review the benchmark to ensure target compliance.

Solution

Configure the router so that static routes are not redistributed to an Alternate Gateway into either an Exterior Gateway Protocol or Interior Gateway Protocol to the NIPRNet or to other Autonomous System. Enter 'no redistribute static' into the routing process configuration to fulfill this requirement.

To configure a Route Map to allow for redistribution of some static routes, refer to Chapter 18.3 of the Arista Configuration Manual.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Arista_MLS_DCS-7000_Series_Y20M07_STIG.zip

Item Details

References: CAT|II, CCI|CCI-001414, Group-ID|V-60903, Rule-ID|SV-75361r1_rule, STIG-ID|AMLS-L3-000170, Vuln-ID|V-60903

Plugin: Arista

Control ID: 910355da96ef4d64b9ea7b97ce45f5683786f0bab73d29c36dde4c4363fc1886