II - Mission Support Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000205-RTR-000002
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.
<VulnDiscussion>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 -
SRG-NET-000362-RTR-000111
<GroupDescription></GroupDescription>Group -
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-000115
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to have Internet Control Message Protocol (ICMP) redirect 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-000078-RTR-000001
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to log all packets that have been dropped at interfaces via an ACL.
<VulnDiscussion>Auditing and logging are key components of any security architecture. It is essential for security personnel to know what is ...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 perimeter switch must be configured to only allow incoming communications from authorized sources to be routed to authorized destinations.
<VulnDiscussion>Unrestricted traffic may contain malicious traffic that poses a threat to an enclave or to other connected networks. Addition...Rule Medium Severity -
SRG-NET-000364-RTR-000110
<GroupDescription></GroupDescription>Group -
The Cisco perimeter switch must be configured to block inbound packets with source Bogon IP address prefixes.
<VulnDiscussion>Packets with Bogon IP source addresses should never be allowed to traverse the IP core. Bogon IP networks are RFC1918 address...Rule Medium Severity
Node 2
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