← Back to Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

V-282676

CAT II (Medium)

TOSS 5 network interfaces must not be in promiscuous mode.

Rule ID

SV-282676r1201008_rule

STIG

Tri-Lab Operating System Stack (TOSS) 5 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-000366

Discussion

Network interfaces in promiscuous mode allow for the capture of all network traffic visible to the system. If unauthorized individuals can access these applications, it may allow them to collect information such as logon IDs, passwords, and key exchanges between systems. If the system is being used to perform a network troubleshooting function, the use of these tools must be documented with the information systems security officer (ISSO) and restricted to only authorized personnel.

Check Content

Verify network interfaces are not in promiscuous mode using the following command:

$ ip link | grep -i promisc

If network interfaces are found on the system in promiscuous mode and their use has not been approved by the ISSO and documented, this is a finding.

Fix Text

Configure network interfaces to turn off promiscuous mode unless approved by the ISSO and documented.

Set the promiscuous mode of an interface to off using the following command:

$ sudo ip link set dev <devicename> multicast off promisc off