The Juniper BGP router must be configured to reject inbound route advertisements for any Bogon prefixes.
An XCCDF Rule
Description
<VulnDiscussion>Accepting route advertisements for Bogon prefixes can result in the local autonomous system (AS) becoming a transit for malicious traffic as it will in turn advertise these prefixes to neighbor autonomous systems. The list of Bogon addresses can change, based upon new address range assignments, and must be reviewed to ensure filters remain current.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-253974r843955_rule
- Severity
- Medium
- References
- Updated
Remediation - Manual Procedure
Ensure all eBGP routers are configured to reject inbound route advertisements for any currently defined Bogon prefixes.
set policy-options route-filter-list bogon 0.0.0.0/8 orlonger
set policy-options route-filter-list bogon 10.0.0.0/8 orlonger
set policy-options route-filter-list bogon 100.64.0.0/10 orlonger
set policy-options route-filter-list bogon 127.0.0.0/8 orlonger