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The system must be configured with a default gateway for IPv4 if the system uses IPv4, unless the system is a router.


Overview

Finding ID Version Rule ID IA Controls Severity
V-4397 GEN005560 SV-4397r2_rule ECSC-1 Medium
Description
If a system has no default gateway defined, the system is at increased risk of man-in-the-middle, monitoring, and Denial-of-Service attacks.
STIG Date
UNIX SRG 2013-03-26

Details

Check Text ( C-8275r2_chk )
Check the system for an IPv4 default route.

Procedure:
# netstat -r |grep default

If a default route is not defined, this is a finding.
Fix Text (F-4308r2_fix)
Set a default gateway for IPv4.