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Cisco IOS XR Router RTR Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-NET-000364-RTR-000203

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco perimeter router must be configured to drop IPv6 packets containing a Destination Option header with invalid option type values.

    &lt;VulnDiscussion&gt;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
    Show

  • SRG-NET-000364-RTR-000204

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter router must be configured to drop IPv6 packets containing an extension header with the Endpoint Identification option.

    &lt;VulnDiscussion&gt;The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000205

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter router must be configured to drop IPv6 packets containing the NSAP address option within Destination Option header.

    &lt;VulnDiscussion&gt;The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000206

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco perimeter router must be configured to drop IPv6 packets containing a Hop-by-Hop or Destination Option extension header with an undefined option type.

    &lt;VulnDiscussion&gt;The optional and extensible natures of the IPv6 extension headers require higher scrutiny since many implementations do not a...
    Rule Medium Severity
    Show

  • The Cisco perimeter router must be configured to drop IPv6 undetermined transport packets.

    &lt;VulnDiscussion&gt;One of the fragmentation weaknesses known in IPv6 is the undetermined transport packet. This packet contains an undetermined ...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000201

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to have Internet Control Message Protocol (ICMP) unreachable messages disabled on all external interfaces.

    &lt;VulnDiscussion&gt;The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ...
    Rule Medium Severity
    Show

  • SRG-NET-000362-RTR-000114

    <GroupDescription></GroupDescription>
    Group
    Show

  • SRG-NET-000019-RTR-000009

    <GroupDescription></GroupDescription>
    Group
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  • SRG-NET-000018-RTR-000001

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to enforce approved authorizations for controlling the flow of information within the network based on organization-defined information flow control policies.

    &lt;VulnDiscussion&gt;Information flow control regulates where information is allowed to travel within a network and between interconnected network...
    Rule Medium Severity
    Show

  • SRG-NET-000168-RTR-000078

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to enable routing protocol authentication using FIPS 198-1 algorithms with keys not exceeding 180 days of lifetime.

    &lt;VulnDiscussion&gt;A rogue router could send a fictitious routing update to convince a site's perimeter router to send traffic to an incorrect o...
    Rule Medium Severity
    Show

  • SRG-NET-000019-RTR-000007

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to have all inactive interfaces disabled.

    &lt;VulnDiscussion&gt;An inactive interface is rarely monitored or controlled and may expose a network to an undetected attack on that interface. U...
    Rule Low Severity
    Show

  • SRG-NET-000131-RTR-000035

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco router must be configured to have all non-essential capabilities disabled.

    &lt;VulnDiscussion&gt;A compromised router introduces risk to the entire network infrastructure, as well as data resources that are accessible via ...
    Rule Low Severity
    Show

  • SRG-NET-000205-RTR-000001

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to restrict traffic destined to itself.

    &lt;VulnDiscussion&gt;The route processor handles traffic destined to the router—the key component used to build forwarding paths and is instrument...
    Rule High Severity
    Show

  • SRG-NET-000205-RTR-000002

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.

    &lt;VulnDiscussion&gt;Fragmented ICMP packets can be generated by hackers for DoS attacks such as Ping O' Death and Teardrop. It is imperative that...
    Rule Medium Severity
    Show

  • SRG-NET-000362-RTR-000112

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to have IP directed broadcast disabled on all interfaces.

    &lt;VulnDiscussion&gt;An IP directed broadcast is a datagram sent to the broadcast address of a subnet that is not directly attached to the sending...
    Rule Low Severity
    Show

  • SRG-NET-000362-RTR-000113

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to have Internet Control Message Protocol (ICMP) mask reply messages disabled on all external interfaces.

    &lt;VulnDiscussion&gt;The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ...
    Rule Medium Severity
    Show

  • SRG-NET-000362-RTR-000115

    <GroupDescription></GroupDescription>
    Group
    Show

  • The Cisco router must be configured to have Internet Control Message Protocol (ICMP) redirect messages disabled on all external interfaces.

    &lt;VulnDiscussion&gt;The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ...
    Rule Medium Severity
    Show

  • SRG-NET-000078-RTR-000001

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to log all packets that have been dropped at interfaces via ACL.

    &lt;VulnDiscussion&gt;Auditing and logging are key components of any security architecture. It is essential for security personnel to know what is ...
    Rule Low Severity
    Show

  • SRG-NET-000076-RTR-000001

    <GroupDescription></GroupDescription>
    Group
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  • The Cisco router must be configured to produce audit records containing information to establish where the events occurred.

    &lt;VulnDiscussion&gt;Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up t...
    Rule Medium Severity
    Show

  • SRG-NET-000077-RTR-000001

    <GroupDescription></GroupDescription>
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  • The Cisco router must be configured to produce audit records containing information to establish the source of the events.

    &lt;VulnDiscussion&gt;Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...
    Rule Medium Severity
    Show

  • SRG-NET-000202-RTR-000001

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter router must be configured to not be a Border Gateway Protocol (BGP) peer to an alternate gateway service provider.

    &lt;VulnDiscussion&gt;ISPs use BGP to share route information with other autonomous systems (i.e. other ISPs and corporate networks). If the perime...
    Rule High Severity
    Show

  • SRG-NET-000019-RTR-000010

    <GroupDescription></GroupDescription>
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  • The Cisco 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.

    &lt;VulnDiscussion&gt;If the static routes to the alternate gateway are being redistributed into an Exterior Gateway Protocol or Interior Gateway P...
    Rule Low Severity
    Show

  • SRG-NET-000205-RTR-000003

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter router must be configured to deny network traffic by default and allow network traffic by exception.

    &lt;VulnDiscussion&gt;A deny-all, permit-by-exception network communications traffic policy ensures that only connections that are essential and ap...
    Rule High Severity
    Show

  • SRG-NET-000019-RTR-000002

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter router must be configured to enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy.

    &lt;VulnDiscussion&gt;Information flow control regulates authorized information to travel within a network and between interconnected networks. Con...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000109

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter router must be configured to only allow incoming communications from authorized sources to be routed to authorized destinations.

    &lt;VulnDiscussion&gt;Unrestricted traffic may contain malicious traffic that poses a threat to an enclave or to other connected networks. Addition...
    Rule Medium Severity
    Show

  • SRG-NET-000364-RTR-000110

    <GroupDescription></GroupDescription>
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  • The Cisco perimeter router must be configured to block inbound packets with source Bogon IP address prefixes.

    &lt;VulnDiscussion&gt;Packets with Bogon IP source addresses should never be allowed to traverse the IP core. Bogon IP networks are RFC1918 address...
    Rule Medium Severity
    Show

  • SRG-NET-000019-RTR-000008

    <GroupDescription></GroupDescription>
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Node 2

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