The network device must check inbound traffic to ensure the communications are coming from an authorized source and routed to an authorized destination.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
SRG-NET-000195-NDM-NA	SRG-NET-000195-NDM-NA	SRG-NET-000195-NDM-NA_rule		Medium

Description
Spoofing source addresses occurs when a malicious user outside the network has created packets with a source address belonging to the private address space of the target network. This is done in an attempt to slip through the perimeter as a member host to gain access to internal resources or to conceal identity to perform an attack. It is imperative that all inbound and outbound traffic with spoofed or invalid source addresses are blocked. If inbound traffic is not monitored to make sure source and destination of packets are authorized, then malicious users outside the network may be able to send packets to the private, trusted network. This requirement is applicable to specific devices and does not involve the management of a network device.

Description

Spoofing source addresses occurs when a malicious user outside the network has created packets with a source address belonging to the private address space of the target network. This is done in an attempt to slip through the perimeter as a member host to gain access to internal resources or to conceal identity to perform an attack. It is imperative that all inbound and outbound traffic with spoofed or invalid source addresses are blocked. If inbound traffic is not monitored to make sure source and destination of packets are authorized, then malicious users outside the network may be able to send packets to the private, trusted network. This requirement is applicable to specific devices and does not involve the management of a network device.

STIG	Date
Network Device Management Security Requirements Guide	2013-07-30

Details

Check Text ( C-SRG-NET-000195-NDM-NA_chk )
This requirement is NA for network device management.

Fix Text (F-SRG-NET-000195-NDM-NA_fix)
This requirement is NA for network device management.