Router Security Requirements Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The BGP router must be configured to reject route advertisements from CE routers with an originating AS in the AS_PATH attribute that does not belong to that customer.
<VulnDiscussion>Verifying the path a route has traversed will ensure that the local AS is not used as a transit network for unauthorized traf...Rule Low Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The router must be configured to disable the auxiliary port unless it is connected to a secured modem providing encryption and authentication.
<VulnDiscussion>The use of POTS lines to modems connecting to network devices provides clear text of authentication traffic over commercial c...Rule Low Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The perimeter router must be configured to enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy.
<VulnDiscussion>Information flow control regulates authorized information to travel within a network and between interconnected networks. Con...Rule Medium Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The multicast router must be configured to disable Protocol Independent Multicast (PIM) on all interfaces that are not required to support multicast routing.
<VulnDiscussion>If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or ...Rule Medium Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The multicast router must be configured to bind a Protocol Independent Multicast (PIM) neighbor filter to interfaces that have PIM enabled.
<VulnDiscussion>PIM is a routing protocol used to build multicast distribution trees for forwarding multicast traffic across the network infr...Rule Medium Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The out-of-band management (OOBM) gateway router must be configured to have separate IGP instances for the managed network and management network.
<VulnDiscussion>If the gateway router is not a dedicated device for the OOBM network, implementation of several safeguards for containment of...Rule Medium Severity -
The multicast edge router must be configured to establish boundaries for administratively scoped multicast traffic.
<VulnDiscussion>If multicast traffic is forwarded beyond the intended boundary, it is possible that it can be intercepted by unauthorized or ...Rule Low Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The router must be configured to have all inactive interfaces disabled.
<VulnDiscussion>An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. U...Rule Low Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The perimeter router must be configured to protect an enclave connected to an alternate gateway by using an inbound filter that only permits packets with destination addresses within the sites address space.
<VulnDiscussion>Enclaves with alternate gateway connections must take additional steps to ensure there is no compromise on the enclave networ...Rule High Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The perimeter router must be configured to not be a Border Gateway Protocol (BGP) peer to an alternate gateway service provider.
<VulnDiscussion> ISPs use BGP to share route information with other autonomous systems (i.e. other ISPs and corporate networks). If the perim...Rule High Severity -
SRG-NET-000019
<GroupDescription></GroupDescription>Group -
The perimeter router must be configured to not redistribute static routes to an alternate gateway service provider into BGP or an IGP peering with the NIPRNet or to other autonomous systems.
<VulnDiscussion>If the static routes to the alternate gateway are being redistributed into an Exterior Gateway Protocol or Interior Gateway P...Rule Low Severity
Node 2
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