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Rules and Groups employed by this XCCDF Profile

  • SRG-NET-000148-L2S-000015

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to uniquely identify all network-connected endpoint devices before establishing any connection.

    &lt;VulnDiscussion&gt;Controlling LAN access via 802.1x authentication can assist in preventing a malicious user from connecting an unauthorized PC...
    Rule High Severity
    Show

  • SRG-NET-000168-L2S-000019

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper layer 2 switch must be configured to disable all dynamic VLAN registration protocols.

    &lt;VulnDiscussion&gt;Dynamic VLAN registration protocols provide centralized management of VLAN domains, which can reduce administration in a swit...
    Rule Medium Severity
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  • SRG-NET-000193-L2S-000020

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.

    &lt;VulnDiscussion&gt;DoS attacks can be mitigated by ensuring sufficient capacity is available for mission-critical traffic. Managing capacity may...
    Rule Medium Severity
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  • SRG-NET-000331-L2S-000001

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to permit authorized users to select a user session to capture.

    &lt;VulnDiscussion&gt;Without the capability to select a user session to capture/record or view/hear, investigations into suspicious or harmful eve...
    Rule Medium Severity
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  • SRG-NET-000332-L2S-000002

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to permit authorized users to remotely view, in real time, all content related to an established user session from a component separate from the layer 2 switch.

    &lt;VulnDiscussion&gt;Without the capability to remotely view/hear all content related to a user session, investigations into suspicious user activ...
    Rule Medium Severity
    Show

  • SRG-NET-000343-L2S-000016

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to authenticate all network-connected endpoint devices before establishing any connection.

    &lt;VulnDiscussion&gt;Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. ...
    Rule Medium Severity
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  • SRG-NET-000362-L2S-000021

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to enable Root Protection on STP switch ports connecting to access layer switches.

    &lt;VulnDiscussion&gt;Spanning Tree Protocol (STP) does not provide any means for the network administrator to securely enforce the topology of the...
    Rule Low Severity
    Show

  • SRG-NET-000362-L2S-000022

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to enable BPDU Protection on all user-facing or untrusted access switch ports.

    &lt;VulnDiscussion&gt;If a rogue switch is introduced into the topology and transmits a Bridge Protocol Data Unit (BPDU) with a lower bridge priori...
    Rule Medium Severity
    Show

  • SRG-NET-000362-L2S-000023

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to enable STP Loop Protection on all non-designated STP switch ports.

    &lt;VulnDiscussion&gt;The Spanning Tree Protocol (STP) Loop Protection feature provides additional protection against STP loops. An STP loop is cre...
    Rule Medium Severity
    Show

  • SRG-NET-000362-L2S-000024

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured not to forward unknown unicast traffic to access interfaces.

    &lt;VulnDiscussion&gt;Access layer switches use the Content Addressable Memory (CAM) table to direct traffic to specific interfaces based on the VL...
    Rule Medium Severity
    Show

  • SRG-NET-000362-L2S-000025

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to enable DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources.

    &lt;VulnDiscussion&gt;In an enterprise network, devices under administrative control are trusted sources. These devices include the switches, route...
    Rule Medium Severity
    Show

  • SRG-NET-000362-L2S-000026

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to enable IP Source Guard on all user-facing or untrusted access VLANs.

    &lt;VulnDiscussion&gt;IP Source Guard provides source IP address filtering on an untrusted layer 2 interface to prevent a malicious host from imper...
    Rule Medium Severity
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  • SRG-NET-000362-L2S-000027

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to enable Dynamic Address Resolution Protocol (ARP) Inspection (DAI) on all user VLANs.

    &lt;VulnDiscussion&gt;DAI intercepts Address Resolution Protocol (ARP) requests and verifies that each of these packets has a valid IP-to-MAC addre...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000001

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to enable Storm Control on all host-facing access interfaces.

    &lt;VulnDiscussion&gt;A traffic storm occurs when packets flood a LAN, creating excessive traffic and degrading network performance. Traffic storm ...
    Rule Low Severity
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  • SRG-NET-000512-L2S-000002

    <GroupDescription></GroupDescription>
    Group
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  • The Juniper EX switch must be configured to enable IGMP or MLD Snooping on all VLANs.

    &lt;VulnDiscussion&gt;IGMP and MLD snooping provides a way to constrain multicast traffic at layer 2. By monitoring the IGMP or MLD membership repo...
    Rule Low Severity
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  • SRG-NET-000512-L2S-000003

    <GroupDescription></GroupDescription>
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  • If STP is used, the Juniper EX switch must be configured to implement Rapid STP, or Multiple STP, where VLANs span multiple switches with redundant links.

    &lt;VulnDiscussion&gt;Spanning Tree Protocol (STP) is implemented on bridges and switches to prevent layer 2 loops when a broadcast domain spans mu...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000004

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to verify two-way connectivity on all interswitch trunked interfaces.

    &lt;VulnDiscussion&gt;In topologies where fiber optic interconnections are used, physical misconnections can occur that allow a link to appear to b...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000007

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to assign all disabled access interfaces to an unused VLAN.

    &lt;VulnDiscussion&gt;It is possible that a disabled access interface that is assigned to a user or management VLAN becomes enabled by accident or ...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000008

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must not be configured with VLANs used for L2 control traffic assigned to any host-facing access interface.

    &lt;VulnDiscussion&gt;In a switched Ethernet network, some protocols use L2 Protocol Data Units (PDU) to communicate in-band management or other co...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000009

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to prune the default VLAN from all trunked interfaces that do not require it.

    &lt;VulnDiscussion&gt;All unassigned interfaces are placed into the default VLAN and devices connected to enabled, but unassigned interfaces can co...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000010

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must not use the default VLAN for management traffic.

    &lt;VulnDiscussion&gt;By default, all unassigned interfaces are placed into the default VLAN and if used for management, could unintentionally expo...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000011

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must be configured to set all user-facing or untrusted ports as access interfaces.

    &lt;VulnDiscussion&gt;Configuring user-facing or untrusted interfaces as trunked may expose network traffic to an unauthorized, or unintended, conn...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000012

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must not have a native VLAN ID assigned, or have a unique native VLAN ID, for all 802.1q trunk links.

    &lt;VulnDiscussion&gt;By default, Juniper switches do not assign a native VLAN to any trunked interface. Allowing trunked interfaces to accept unta...
    Rule Medium Severity
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  • SRG-NET-000512-L2S-000013

    <GroupDescription></GroupDescription>
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  • The Juniper EX switch must not have any access interfaces assigned to a VLAN configured as native for any trunked interface.

    &lt;VulnDiscussion&gt;Trunked interfaces without an assigned native VLAN do not accept untagged data packets. Allowing trunked interfaces to accept...
    Rule Low Severity
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The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.

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