FNFG-FW-000050 - The FortiGate firewall must protect traffic log records from unauthorized access while in transit to the central audit server. - enc-algorithm

Information

Auditing and logging are key components of any security architecture. Logging the actions of specific events provides a means to investigate an attack, recognize resource utilization or capacity thresholds, or identify an improperly configured firewall. Thus, it is imperative that the collected log data be secured and access be restricted to authorized personnel. Methods of protection may include encryption or logical separation.

This does not apply to traffic logs generated on behalf of the device itself (management). Some devices store traffic logs separately from the system logs.

Solution

Log in to the FortiGate GUI with Super-Admin privilege.

First, upload the organization CA certificate.
1. Click System.
2. Click Certificates.
3. Click Import, then CA Certificate.
4. Specify File, and click + Upload.
5. Choose the CA Certificate to upload from the local hard drive (base-64 format).
6. Click OK.

Note the name of the imported CA Certificate within the list of Remote CA Certificates.

Then, configure a TLS-enabled syslog connection:
1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
# config log syslogd setting
# set status enable
# set server {CENTRAL SYSLOG SERVER IP ADDRESS}
# set mode reliable
# set enc-algorithm {HIGH-MEDIUM | HIGH}
# set certificate {Certificate used to communicate with Syslog Server}
# end

Note: The server IP address must be on the site's management network.

See Also

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

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-9, CAT|II, CCI|CCI-000162, Rule-ID|SV-234141r628776_rule, STIG-ID|FNFG-FW-000050, Vuln-ID|V-234141

Plugin: FortiGate

Control ID: fd449420ef18c05c6cae28b7195beec4ad0711783f0cd42a6947c6d04b6d0874