II - Mission Support Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000364-RTR-000112
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to have Proxy ARP disabled on all external interfaces.
<VulnDiscussion>When Proxy ARP is enabled on a router, it allows that router to extend the network (at layer 2) across multiple interfaces (L...Rule Medium Severity -
SRG-NET-000364-RTR-000113
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to block all outbound management traffic.
<VulnDiscussion>For in-band management, the management network must have its own subnet to enforce control and access boundaries provided by ...Rule Medium Severity -
SRG-NET-000364-RTR-000114
<GroupDescription></GroupDescription>Group -
The Juniper multicast Designated Router (DR) must be configured to filter the IGMP and MLD Report messages to allow hosts to join only multicast groups that have been approved by the organization.
<VulnDiscussion>Real-time multicast traffic can entail multiple large flows of data. Large unicast flows tend to be fairly isolated (i.e., so...Rule Low Severity -
SRG-NET-000364-RTR-000115
<GroupDescription></GroupDescription>Group -
The Juniper multicast Designated Router (DR) must be configured to filter the IGMP and MLD Report messages to allow hosts to join a multicast group only from sources that have been approved by the organization.
<VulnDiscussion>Real-time multicast traffic can entail multiple large flows of data. Large unicast flows tend to be fairly isolated (i.e., so...Rule Medium Severity -
SRG-NET-000364-RTR-000116
<GroupDescription></GroupDescription>Group -
The Juniper Multicast Source Discovery Protocol (MSDP) router must be configured to only accept MSDP packets from known MSDP peers.
<VulnDiscussion>MSDP peering with customer network routers presents additional risks to the DISN Core, whether from a rogue or misconfigured ...Rule Medium Severity -
SRG-NET-000364-RTR-000200
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to drop fragmented IPv6 packets where the first fragment does not include the entire IPv6 header chain.
<VulnDiscussion>One of the fragmentation weaknesses known in IPv6 is the "undetermined transport" packet, which is the first fragment where t...Rule Medium Severity -
SRG-NET-000364-RTR-000201
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured drop IPv6 packets with a Routing Header type 0, 1, or 3255.
<VulnDiscussion>The routing header can be used maliciously to send a packet through a path where less robust security is in place, rather tha...Rule Medium Severity -
SRG-NET-000364-RTR-000202
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to drop IPv6 packets containing a Hop-by-Hop header with invalid option type values.
<VulnDiscussion>These options are intended to be for the Destination Options header only. The optional and extensible natures of the IPv6 ext...Rule Medium Severity -
SRG-NET-000364-RTR-000203
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to drop IPv6 packets containing a Destination Option header with invalid option type values.
<VulnDiscussion>These options are intended to be for the Hop-by-Hop header only. The optional and extensible natures of the IPv6 extension he...Rule Medium Severity -
SRG-NET-000364-RTR-000204
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to drop IPv6 packets containing an extension header with the Endpoint Identification option.
<VulnDiscussion>The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...Rule Medium Severity -
SRG-NET-000364-RTR-000205
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to drop IPv6 packets containing the NSAP address option within Destination Option header.
<VulnDiscussion>The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...Rule Medium Severity -
SRG-NET-000364-RTR-000206
<GroupDescription></GroupDescription>Group -
The Juniper perimeter router must be configured to drop IPv6 packets containing a Hop-by-Hop or Destination Option extension header with an undefined option type.
<VulnDiscussion>The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...Rule Medium Severity -
SRG-NET-000512-RTR-000001
<GroupDescription></GroupDescription>Group -
The Juniper BGP router must be configured to use its loopback address as the source address for iBGP peering sessions.
<VulnDiscussion>Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability o...Rule Low Severity -
SRG-NET-000512-RTR-000002
<GroupDescription></GroupDescription>Group -
The Juniper MPLS router must be configured to use its loopback address as the source address for LDP peering sessions.
<VulnDiscussion>Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability o...Rule Low Severity -
SRG-NET-000512-RTR-000003
<GroupDescription></GroupDescription>Group -
The Juniper MPLS router must be configured to synchronize IGP and LDP to minimize packet loss when an IGP adjacency is established prior to LDP peers completing label exchange.
<VulnDiscussion>Packet loss can occur when an IGP adjacency is established and the router begins forwarding packets using the new adjacency b...Rule Low Severity -
SRG-NET-000512-RTR-000004
<GroupDescription></GroupDescription>Group -
The Juniper MPLS router must be configured to have TTL Propagation disabled.
<VulnDiscussion>The head end of the label-switched path (LSP), the label edge router (LER) will decrement the IP packet's time-to-live (TTL) ...Rule Medium Severity -
SRG-NET-000512-RTR-000005
<GroupDescription></GroupDescription>Group -
The Juniper PE router must be configured to have each Virtual Routing and Forwarding (VRF) instance bound to the appropriate physical or logical interfaces to maintain traffic separation between all MPLS L3VPNs.
<VulnDiscussion>The primary security model for an MPLS L3VPN infrastructure is traffic separation. The service provider must guarantee the cu...Rule High Severity -
SRG-NET-000512-RTR-000006
<GroupDescription></GroupDescription>Group -
The Juniper PE router must be configured to have each Virtual Routing and Forwarding (VRF) instance with the appropriate Route Target (RT).
<VulnDiscussion>The primary security model for an MPLS L3VPN as well as a VRF-lite infrastructure is traffic separation. Each interface can o...Rule High Severity -
SRG-NET-000512-RTR-000007
<GroupDescription></GroupDescription>Group -
The Juniper PE router must be configured to have each VRF with the appropriate Route Distinguisher (RD).
<VulnDiscussion>An RD provides uniqueness to the customer address spaces within the MPLS L3VPN infrastructure. The concept of the VPN-IPv4 an...Rule Medium Severity -
SRG-NET-000512-RTR-000008
<GroupDescription></GroupDescription>Group -
The Juniper PE router providing MPLS Virtual Private Wire Service (VPWS) must be configured to have the appropriate virtual circuit identification (VC ID) for each attachment circuit.
<VulnDiscussion>VPWS is an L2VPN technology that provides a virtual circuit between two PE routers to forward layer 2 frames between two cust...Rule High Severity -
SRG-NET-000512-RTR-000009
<GroupDescription></GroupDescription>Group -
The Juniper PE router providing Virtual Private LAN Services (VPLS) must be configured to have all attachment circuits defined to the virtual forwarding instance (VFI) with the globally unique VPN ID assigned for each customer VLAN.
<VulnDiscussion>VPLS defines an architecture that delivers Ethernet multipoint services over an MPLS network. Customer layer 2 frames are for...Rule High Severity -
SRG-NET-000512-RTR-000010
<GroupDescription></GroupDescription>Group -
The Juniper PE router must be configured to enforce the split-horizon rule for all pseudowires within a Virtual Private LAN Services (VPLS) bridge domain.
<VulnDiscussion>A virtual forwarding instance (VFI) must be created on each participating PE router for each customer VLAN using VPLS for car...Rule Low Severity -
SRG-NET-000512-RTR-000011
<GroupDescription></GroupDescription>Group -
The Juniper Multicast Source Discovery Protocol (MSDP) router must be configured to use its loopback address as the source address when originating MSDP traffic.
<VulnDiscussion>Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability o...Rule Low Severity -
SRG-NET-000512-RTR-000012
<GroupDescription></GroupDescription>Group -
The Juniper router must be configured to advertise a hop limit of at least 32 in Router Advertisement messages for IPv6 stateless auto-configuration deployments.
<VulnDiscussion>The Neighbor Discovery protocol allows a hop limit value to be advertised by routers in a Router Advertisement message being ...Rule Low Severity -
SRG-NET-000512-RTR-000013
<GroupDescription></GroupDescription>Group -
The Juniper router must not be configured to use IPv6 Site Local Unicast addresses.
<VulnDiscussion>As currently defined, site local addresses are ambiguous and can be present in multiple sites. The address itself does not co...Rule Medium Severity
Node 2
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