Cisco IOS XE Switch RTR Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The Cisco switch must be configured to have Gratuitous ARP disabled on all external interfaces.
<VulnDiscussion>A gratuitous ARP is an ARP broadcast in which the source and destination MAC addresses are the same. It is used to inform the...Rule Medium Severity -
SRG-NET-000362-RTR-000112
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to have IP directed broadcast disabled on all interfaces.
<VulnDiscussion>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 -
SRG-NET-000362-RTR-000113
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) unreachable messages disabled on all external interfaces.
<VulnDiscussion>The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Switches automatically send...Rule Medium Severity -
SRG-NET-000362-RTR-000114
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) mask reply messages disabled on all external interfaces.
<VulnDiscussion>The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Switches automatically send...Rule Medium Severity -
SRG-NET-000362-RTR-000115
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to produce audit records containing information to establish where the events occurred.
<VulnDiscussion>Without establishing where events occurred, it is impossible to establish, correlate, and investigate the events leading up t...Rule Medium Severity -
SRG-NET-000077-RTR-000001
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to produce audit records containing information to establish the source of the events.
<VulnDiscussion>Without establishing the source of the event, it is impossible to establish, correlate, and investigate the events leading up...Rule Medium Severity -
SRG-NET-000019-RTR-000001
<GroupDescription></GroupDescription>Group -
The Cisco switch 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-000202-RTR-000001
<GroupDescription></GroupDescription>Group -
The Cisco perimeter switch must be configured to deny network traffic by default and allow network traffic by exception.
<VulnDiscussion>A deny-all, permit-by-exception network communications traffic policy ensures that only connections that are essential and ap...Rule High Severity -
SRG-NET-000019-RTR-000002
<GroupDescription></GroupDescription>Group -
The Cisco perimeter switch 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-000364-RTR-000109
<GroupDescription></GroupDescription>Group -
The Cisco BGP switch must be configured to reject inbound route advertisements for any Bogon prefixes.
<VulnDiscussion>Accepting route advertisements for Bogon prefixes can result in the local autonomous system (AS) becoming a transit for malic...Rule Medium Severity -
SRG-NET-000018-RTR-000003
<GroupDescription></GroupDescription>Group
Node 2
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