JUEX-L2-000050 - The Juniper EX switch must be configured to permit authorized users to select a user session to capture.

Information

Without the capability to select a user session to capture/record or view/hear, investigations into suspicious or harmful events would be hampered by the volume of information captured. The volume of information captured may also adversely impact the operation for the network. Session audits may include port mirroring, tracking websites visited, and recording information and/or file transfers.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Enable the feature or configure the switch so that it is capable of capturing ingress and egress packets from any designated switch port for the purpose of monitoring a specific user session.

To capture packets from the L2 interface ge-0/0/0 and forward out the L2 interface ge-0/0/1, configure the switch similarly to the example:

set forwarding-options analyzer <analyzer name> input ingress interface <input interface>.<logical unit>
-or-
set forwarding-options analyzer <analyzer name> input ingress interface irb.<logical unit>

set forwarding-options analyzer <analyzer name> input egress interface <input interface>.<logical unit>
-or-
set forwarding-options analyzer <analyzer name> input egress interface irb.<logical unit>

set forwarding-options analyzer <analyzer name> output interface <output interface>.<logical unit>

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_EX_Switches_Y23M07_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-14, CAT|II, CCI|CCI-001919, Rule-ID|SV-253952r843889_rule, STIG-ID|JUEX-L2-000050, Vuln-ID|V-253952

Plugin: Juniper

Control ID: 8632c2ad126ed9ce5a6af61efc6b14243b7a7cf1da4ced439ee5dc168dccf1db