The FortiGate device must synchronize internal information system clocks using redundant authoritative time sources.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-234183 | FGFW-ND-000120 | SV-234183r879746_rule | CCI-000366 | medium |
| Description | ||||
| The loss of connectivity to a particular authoritative time source will result in the loss of time synchronization (free-run mode) and increasingly inaccurate time stamps on audit events and other functions. Multiple time sources provide redundancy by including a secondary source. Time synchronization is usually a hierarchy; clients synchronize time to a local source while that source synchronizes its time to a more accurate source. The network device must utilize an authoritative time server and/or be configured to use redundant authoritative time sources. This requirement is related to the comparison done in CCI-001891. DoD-approved solutions consist of a combination of a primary and secondary time source using a combination or multiple instances of the following: a time server designated for the appropriate DoD network (NIPRNet/SIPRNet); United States Naval Observatory (USNO) time servers; and/or the Global Positioning System (GPS). The secondary time source must be located in a different geographic region than the primary time source. | ||||
| STIG | Date | |||
| Fortinet FortiGate Firewall NDM Security Technical Implementation Guide | 2023-06-01 | |||
Related Frameworks
4 paths across 3 frameworks
Related Frameworks
NIST 800-531 mapping
CM-6
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
NIST 800-1712 mappings
3.4.1
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
3.4.2
1.00
- DISA · 1 · disa_xccdf · related
- DISA · 2025-01-23 · disa_cci_list · equivalent
- NIST · Rev 2 (Feb 2020, errata Jan 2021) · nist_800_171_app_d · equivalent
CCI1 mapping
CCI-000366
1.00
- DISA · 1 · disa_xccdf · related
Details
Check Text (C-234183r879746_chk)
Log in to the FortiGate GUI with Super-Admin privilege.
1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
# show full-configuration system ntp | grep server
The output should be:
set server {IP address of NTP server 1}
set server {IP address of NTP server 2}
If the internal information system clocks are not configured to synchronize with the primary and secondary time sources, this is a finding.
Fix Text (F-37333r611737_fix)
Log in to the FortiGate GUI with Super-Admin privilege.
1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
# config system ntp
# set ntpsync enable
# set type custom
# set syncinterval {INTEGER}
To add NTP server 1:
# config ntpserver
# edit {ID}
# set server {IP ADDRESS}
# set authentication enable
# set key {PASSWORD}
# set key-id {INTEGER}
# next
To add NTP server 2:
# config ntpserver
# edit {ID}
# set server {IP ADDRESS}
# set authentication enable
# set key {PASSWORD}
# set key-id {INTEGER}
# next
# end