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The router must be configured with a filter to deny all traffic applied to all inactive interfaces.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| SRG-NET-000019-RTR-000008 | SRG-NET-000019-RTR-000008 | SRG-NET-000019-RTR-000008_rule | Medium |
| Description |
|---|
| Without a filter configured to deny all traffic on inactive interfaces, a router interface connected to an external network will expose the router and backbone network to malicious traffic. |
| STIG | Date |
|---|---|
| Router Security Requirements Guide | 2013-07-30 |
Details
| Check Text ( C-SRG-NET-000019-RTR-000008_chk ) |
|---|
| Verify all inactive interfaces have a filter to deny all traffic applied to the interface. If an inactive interface does not have a filter to deny all traffic, this is a finding. |
| Fix Text (F-SRG-NET-000019-RTR-000008_fix) |
|---|
| Configure a filter to deny all traffic then apply it to all inactive interfaces. |