FortiOS 5.4.3 Release Notes


This document provides the following information for FortiOS 5.4.3 build 1111:

  • Special Notices
  • Upgrade Information
  • Product Integration and Support
  • Resolved Issues
  • Known Issues
  • Limitations

See the Fortinet Document Library for FortiOS documentation.

Supported models

FortiOS 5.4.3 supports the following models.

FortiGate FG-30D, FG-30E, FG-30D-POE, FG-50E, FG-51E, FG-60D, FG-60D-POE, FG-70D,

FG-70D-POE, FG-80C, FG-80CM, FG-80D, FG-90D FG-90D, FG-90D-POE, FG92D, FG-94D-POE, FG-98D-POE, FG-100D, FG-140D, FG-140D-POE, FG- 200D,

FG-200D-POE, FG-240D, FG-240D-POE, FG-280D-POE, FG-300D, FG-400D, FG500D, FG-600C, FG-600D, FG-800C, FG-800D, FG-900D, FG-1000C, FG-1000D,

FG-1200D, FG-1500D, FG-1500DT, FG-3000D, FG-3100D, FG-3200D, FG-3240C,

FG-3600C, FG-3700D, FG-3700DX, FG-3810D, FG-3815D, FG-5001C, FG-5001D

FortiWiFi FWF-30D, FWF-30E, FWF-30D-POE, FWF-50E, FWF-51E, FWF-60D, FWF-60DPOE, FWF-80CM, FWF-81CM, FWF-90D, FWF-90D-POE
FortiGate Rugged FGR-60D, FGR-90D
Pay-as-you-go images FOS-VM64, FOS-VM64-KVM
FortiOS Carrier FortiOS Carrier 5.4.3 images are delivered upon request and are not available on the customer support firmware download page.

Special Branch Supported Models

The following models are released on a special branch based off of FortiOS 5.4.3. As such, the System > Dashboard > Status page and the output from the get system status CLI command displays the build number.


FGR-30D is released on build 5861.
FGR-35D is released on build 5861.
FGR-30D-A is released on build 5861.
FGT-30E-MI is released on build 5858.
FGT-30E-MN is released on build 5858.
FWF-30E-MI is released on build 5858.
FWF-30E-MN is released on build 5858.
FWF-50E-2R is released on build 5866.
FGT-52E is released on build 5862.
FGT-60E is released on build 5873.
FWF-60E is released on build 5873.
FGT-61E is released on build 5873.
FWF-61E is released on build 5873.
FGT-90E is released on build 5865.
FGT-91E is released on build 5865.
FWF-92D is released on build 9482.
FGT-100E is released on build 5873.
FGT-101E is released on build 5873.
FGT-200E is released on build 5864.
FGT-201E is released on build 5864.
FGT-2000E is released on build 5860.
FGT-2500E is released on build 5860.
FGT-3800D is released on build 5859.

To confirm that you are running the proper build, the output from the get system status CLI command has a branch point field that should read 1111.



What’s new in FortiOS 5.4.3

FortiOS 5.4.3 is a bug fix release with no new features.

Special Notices

Built-In Certificate

FortiGate and FortiWiFi D-series and above have a built in Fortinet_Factory certificate that uses a 2048-bit certificate with the 14 DH group.

Default log setting change

For FG-5000 blades, log disk is disabled by default. It can only be enabled via CLI. For all 2U & 3U models (FG3600/FG-3700/FG-3800), log disk is also disabled by default. For all 1U models and desktop models that supports SATA disk, log disk is enabled by default.

FortiAnalyzer Support

In version 5.4, encrypting logs between FortiGate and FortiAnalyzer is handled via SSL encryption. The IPsec option is no longer available and users should reconfigure in GUI or CLI to select the SSL encryption option as needed.


SSL/HTTPS/SMTPS/IMAPS/POP3S options were removed from server-load-balance on low end models below FG-100D except FG-80C and FG-80CM.

FortiGate and FortiWiFi-92D Hardware Limitation

FortiOS 5.4.0 reported an issue with the FG-92D model in the Special Notices > FG-92D High Availability in Interface Mode section of the release notes. Those issues, which were related to the use of port 1 through 14, include:

  • PPPoE failing, HA failing to form l IPv6 packets being dropped l FortiSwitch devices failing to be discovered
  • Spanning tree loops may result depending on the network topology

FG-92D and FWF-92D do not support STP. These issues have been improved in FortiOS 5.4.1, but with some side effects with the introduction of a new command, which is enabled by default:

config global set hw-switch-ether-filter <enable | disable>

When the command is enabled:

  • ARP (0x0806), IPv4 (0x0800), and VLAN (0x8100) packets are allowed
  • PDUs are dropped and therefore no STP loop results
  • PPPoE packets are dropped
  • IPv6 packets are dropped
  • FortiSwitch devices are not discovered
  • HA may fail to form depending the network topology

When the command is disabled:

  • All packet types are allowed, but depending on the network topology, an STP loop may result

FG-900D and FG-1000D

CAPWAP traffic will not offload if the ingress and egress traffic ports are on different NP6 chips. It will only offload if both ingress and egress ports belong to the same NP6 chip.


CAPWAP Tunnel over the GRE tunnel (CAPWAP + TP2 card) is not supported.

FortiGate units running 5.4.3 and managed by FortiManager 5.0 or 5.2

FortiGate units running 5.4.3 and managed by FortiManager 5.0.0 or 5.2.0 may report installation failures on newly created VDOMs, or after a factory reset of the FortiGate unit even after a retrieve and re-import policy.

FortiClient Support

Only FortiClient 5.4.1 and later is supported with FortiOS 5.4.1 and later. Upgrade managed FortiClients to 5.4.1 or later before upgrading FortiGate to 5.4.1 or later.

Note that the FortiClient license should be considered before upgrading.

Full featured FortiClient 5.2, and 5.4 licenses will carry over into FortiOS 5.4.1 and later. Depending on the environment needs, FortiClient EMS license may need to be purchased for endpoint provisioning. Please consult Fortinet Sales or your reseller for guidance on the appropriate licensing for  your organization.

The perpetual FortiClient 5.0 license (including the 5.2 limited feature upgrade) will not carry over into FortiOS 5.4.1 and later. A new license will need to be procured for either FortiClient EMS or FortiGate. To verify if a license purchase is compatible with 5.4.1 and later, the SKU should begin with FC-10-C010

FortiClient (Mac OS X) SSL VPN Requirements

When using SSL VPN on Mac OS X 10.8, you must enable SSLv3 in FortiOS.

FortiGate-VM 5.4 for VMware ESXi

Upon upgrading to FortiOS 5.4.3, FortiGate-VM v5.4 for VMware ESXi (all models), no longer supports the VMXNET2 vNIC driver.

FortiClient Profile Changes

With introduction of the Cooperative Security Fabric in FortiOS v5.4.1, FortiClient profiles will be updated on FortiGate. FortiClient profiles and FortiGate are now primarily used for Endpoint Compliance, and FortiClient Enterprise Management Server (EMS) is now used for FortiClient deployment and provisioning.

In the FortiClient profile on FortiGate, when you set the Non-Compliance Action setting to Auto-Update, the

FortiClient profile supports limited provisioning for FortiClient features related to compliance, such as AntiVirus,

Web Filter, Vulnerability Scan, and Application Firewall. When you set the Non-Compliance Action setting to Block or Warn, you can also use FortiClient EMS to provision endpoints, if they require additional other features, such as VPN tunnels or other advanced options. For more information, see the FortiOS Handbook – Security Profiles.

When you upgrade to FortiOS 5.4.1 and later, the FortiClient provisioning capability will no longer be available in FortiClient profiles on FortiGate. FortiGate will be used for endpoint compliance and Cooperative Security Fabric integration, and FortiClient Enterprise Management Server (EMS) should be used for creating custom FortiClient installers as well as deploying and provisioning FortiClient on endpoints. For more information on licensing of EMS, contact your sales representative.



FortiPresence users must change the FortiGate web administration TLS version in order to allow the connections on all versions of TLS. Use the following CLI command.

config system global

set admin-https-ssl-versions tlsv1-0 tlsv1-1 tlsv1-2


Log Disk Usage

Users are able to toggle disk usage between Logging and WAN Optimization for single disk FortiGates.

To view a list of supported FortiGate models, refer to the FortiOS 5.4.0 Feature Platform Matrix.

SSL VPN setting page

The default server certificate has been changed to the Fortinet_Factory option. This excludes FortiGateVMs which remain at the self-signed option. For details on importing a CA signed certificate, please see the How to purchase and import a signed SSL certificate document.

FG-30E-3G4G and FWF-30E-3G4G MODEM Firmware Upgrade

The 3G4G MODEM firmware on the FG-30E-3G4G and FWF-30E-3G4G models may require updating. Upgrade instructions and the MODEM firmware have been uploaded to the Fortinet CustomerService & Support site.

Log in and go to Download > Firmware. In the Select Product list, select FortiGate, and click the Download tab. The upgrade instructions are in the following directory:


Upgrade Information

Upgrading to FortiOS 5.4.3

FortiOS version 5.4.3 officially supports upgrading from version 5.4.1 and later and 5.2.9 and later.

When upgrading from a firmware version beyond those mentioned in the Release Notes, a recommended guide for navigating the upgrade path can be found on the Fortinet documentation site.

There is separate version of the guide describing the safest upgrade path to the latest patch of each of the supported versions of the firmware. To upgrade to this build, go to FortiOS 5.4 Supported Upgrade Paths

Cooperative Security Fabric Upgrade

FortiOS 5.4.1 and later greatly increases the interoperability between other Fortinet products. This includes:

  • FortiClient 5.4.1 and later l FortiClient EMS 1.0.1 and later l FortiAP 5.4.1 and later l FortiSwitch 3.4.2 and later

The upgrade of the firmware for each product must be completed in a precise order so the network connectivity is maintained without the need of manual steps. Customers must read the following two documents prior to upgrading any product in their network:

  • Cooperative Security Fabric – Upgrade Guide
  • FortiOS 5.4.x Upgrade Guide for Managed FortiSwitch Devices

This document is available in the Customer Support Firmware Images download directory for FortiSwitch 3.4.2.

FortiClient Profiles

After upgrading from FortiOS 5.4.0 to 5.4.1, your FortiClient profiles will be changed to remove a number of options that are no longer supported. After upgrading you should review your FortiClient profiles to make sure they are configured appropriately for your requirements and either modify them if required or create new ones.

The following FortiClient Profile features are no longer supported by FortiOS 5.4.1:

  • Advanced FortiClient profiles (XML configuration)
  • Advanced configuration, such as configuring CA certificates, unregister option, FortiManager updates, dashboard Banner, client-based logging when on-net, and Single Sign-on Mobility Agent
  • VPN provisioning
  • Advanced AntiVirus settings, such as Scheduled Scan, Scan with FortiSandbox, and Excluded Paths
  • Client-side web filtering when on-net
  • iOS and Android configuration by using the FortiOS GUI

It is recommended that FortiClient Enterprise Management Server (EMS) should used for detailed Endpoint deployment and provisioning.

Unified Disk Usage

FortiOS 5.4.3 changes the disk usage behavior upon upgrading from FortiOS 5.2. The table below describes the new logging and WAN Optimization disk usage for single and two disk FortiGate devices running FortiOS 5.4.3.

Single Disk Platforms (Logging or WAN Optimization)
                                                   Only Logging enabled          No change.
Only WAN Optimization           No change. enabled
Both Logging & WAN Disk is reserved for logging. If WAN Optimization Optimization enabled is configured, the WAN Optimization cache is lost.
Two Disk Platforms (First disk reserved for Logging; second reserved for WAN Optimization)
                                                   Only Logging enabled on     No change.

the first disk

Only Logging enabled on        Logging is changed to the first disk. Logging data the second disk    is lost on the second disk.
Only WAN Optimization WAN Optimization is changed to the second disk. enabled on the first disk WAN Optimization cache is lost on the first disk.
Only WAN Optimization Second disk reserved for WAN Optimization. First enabled on the second disk reserved for logging even when the log disk disk status CLI command is disabled: log-disk-


Both Logging & WAN First disk reserved for logging. Second disk Optimization enabled reserved for WAN Optimization.

FortiGate-VM 5.4 for VMware ESXi

Upon upgrading to FortiOS 5.4.3, FortiGate-VM v5.4 for VMware ESXi (all models), no longer supports the VMXNET2 vNIC driver.

Downgrading to previous firmware versions

Downgrading to previous firmware versions results in configuration loss on all models. Only the following settings are retained:

  • operation mode
  • interface IP/management IP
  • static route table
  • DNS settings
  • VDOM parameters/settings
  • admin user account
  • session helpers
  • system access profiles.

When downgrading from 5.4 to 5.2, users will need to reformat the log disk.

Amazon AWS Enhanced Networking Compatibility Issue

Due to this new enhancement, there is a compatibility issue with older AWS VM versions. After downgrading a 5.4.1 or later image to an older version, network connectivity is lost. Since AWS does not provide console access, you cannot recover the downgraded image.

Downgrading to older versions from 5.4.1 or later running the enhanced nic driver is not allowed. The following AWS instances are affected:

  • C3
  • C4
  • R3
  • I2
  • M4
  • D2

FortiGate VM firmware

Fortinet provides FortiGate VM firmware images for the following virtual environments:

Citrix XenServer and Open Source XenServer

  • .out: Download the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains the QCOW2 file for Open Source XenServer.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains the Citrix XenServer Virtual Appliance (XVA), Virtual Hard Disk (VHD), and OVF files.

Firmware image checksums                                                                                                    Upgrade Information

Linux KVM

  • .out: Download the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains QCOW2 that can be used by qemu.

Microsoft Hyper-V

  • .out: Download the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download the 64-bit package for a new FortiGate VM installation. This package contains three folders that can be imported by Hyper-V Manager on Hyper-V 2012. It also contains the file vhd in the Virtual Hard Disks folder that can be manually added to the Hyper-V Manager.

VMware ESX and ESXi

  • .out: Download either the 64-bit firmware image to upgrade your existing FortiGate VM installation.
  • Download either the 64-bit package for a new FortiGate VM installation. This package contains Open Virtualization Format (OVF) files for VMware and two Virtual Machine Disk Format (VMDK) files used by the OVF file during deployment.

Firmware image checksums

The MD5 checksums for all Fortinet software and firmware releases are available at the Customer Service & Support portal, After logging in select Download > Firmware Image Checksums, enter the image file name including the extension, and select Get Checksum Code.

Product Integration and Support

FortiOS 5.4.3 support

The following table lists 5.4.3 product integration and support information:

Web Browsers                                l Microsoft Edge 25

l    Microsoft Internet Explorer 11 l Mozilla Firefox version 46 l Google Chrome version 50

l    Apple Safari version 9.1 (For Mac OS X)

Other web browsers may function correctly, but are not supported by


Explicit Web Proxy Browser            l Microsoft Edge 25

l   Microsoft Internet Explorer 11 l Mozilla Firefox version 45 l Apple Safari version 9.1 (For Mac OS X)

l   Google Chrome version 51

Other web browsers may function correctly, but are not supported by


FortiManager                                    For the latest information, see the FortiManagerand FortiOS


You should upgrade your FortiManager prior to upgrading the FortiGate.

FortiAnalyzer                                    For the latest information, see the FortiAnalyzerand FortiOS


You should upgrade your FortiAnalyzer prior to upgrading the FortiGate.

FortiClient Microsoft Win-               l 5.4.1

dows and FortiClient Mac           If FortiClient is being managed by a FortiGate, you must upgrade

OS X                                            FortiClient before upgrading the FortiGate.

FortiClient iOS                                l 5.4.1
FortiClient Android and                   l 5.4.0

FortiClient VPN Android



FortiAP l 5.4.1 and later l 5.2.5 and later

You should verify what the new FortiAP version is for your FortiAP prior to upgrading the FortiAP units. You can do this by going to the WiFi Controller > Managed Access Points > Managed FortiAP page in the GUI. Under the

OS Version column you will see a message reading A recommended update is available for any FortiAP that is running an earlier version than what is recommended.

FortiAP-S l 5.4.2 and later
FortiSwitch OS (FortiLink support) l 3.5.0 and later
FortiController l 5.2.0 and later

Supported models: FCTL-5103B, FCTL-5903C, FCTL-5913C l 5.0.3 and later

Supported model: FCTL-5103B

FortiSandbox l 2.1.0 and later l 1.4.0 and later
Fortinet Single Sign-On (FSSO) l  5.0 build 0254 and later (needed for FSSO agent support OU in group filters)

l  Windows Server 2016 Standard l Windows Server 2008 (32-bit and 64-bit) l Windows Server 2008 R2 64-bit l Windows Server 2012 Standard l Windows Server 2012 R2 Standard l Novell eDirectory 8.8

l  4.3 build 0164 (contact Support for download) l Windows Server 2003 R2 (32-bit and 64-bit) l Windows Server 2008 (32-bit and 64-bit) l Windows Server 2008 R2 64-bit l Windows Server 2012 Standard Edition l Windows Server 2012 R2 l Novell eDirectory 8.8

FSSO does not currently support IPv6.

FortiExplorer l 2.6 build 1083 and later.

Some FortiGate models may be supported on specific FortiExplorer versions.


FortiExplorer iOS l 1.0.6 build 0130 and later

Some FortiGate models may be supported on specific FortiExplorer iOS versions.

FortiExtender l  3.0.0

l  2.0.2 build 0011 and later

AV Engine l 5.239
IPS Engine l 3.299
Virtualization Environments  
Citrix l XenServer version 5.6 Service Pack 2 l XenServer version 6.0 and later
Linux KVM l RHEL 7.1/Ubuntu 12.04 and later l CentOS 6.4 (qemu 0.12.1) and later
Microsoft l Hyper-V Server 2008 R2, 2012, and 2012 R2
Open Source l XenServer version 3.4.3 l XenServer version 4.1 and later
VMware l  ESX versions 4.0 and 4.1

l  ESXi versions 4.0, 4.1, 5.0, 5.1, 5.5 and 6.0

VM Series – SR-IOV The following NIC chipset cards are supported:

l Intel 82599 l Intel X540 l Intel X710/XL710

Language support

The following table lists language support information.

SSL VPN support

Language support

Language GUI
Chinese (Simplified)
Chinese (Traditional)
Portuguese (Brazil)
Spanish (Spain)

SSL VPN support

SSL VPN standalone client

The following table lists SSL VPN tunnel client standalone installer for the following operating systems.

Operating system and installers

Operating System Installer
Microsoft Windows XP SP3 (32-bit)

Microsoft Windows 7 (32-bit & 64-bit)

Microsoft Windows 8 (32-bit & 64-bit)

Microsoft Windows 8.1 (32-bit & 64-bit)

Microsoft Windows 10 (32-bit & 64-bit) 2331
Linux CentOS 6.5 (32-bit & 64-bit) Linux Ubuntu 12.0.4 (32-bit & 64-bit) 2331
Virtual Desktop for Microsoft Windows 7 SP1 (32-bit) 2331

Other operating systems may function correctly, but are not supported by Fortinet.


SSL VPN web mode

The following table lists the operating systems and web browsers supported by SSL VPN web mode.

Supported operating systems and web browsers

Operating System Web Browser
Microsoft Windows 7 SP1 (32-bit/64-bit) Microsoft Internet Explorer version 11 Mozilla Firefox version 46
Microsoft Windows 8/8.1 (32-bit/64-bit) Microsoft Internet Explorer version 11 Mozilla Firefox version 46
Mac OS 10.9 Safari 7
Linux CentOS version 6.5 Mozilla Firefox version 46

Other operating systems and web browsers may function correctly, but are not supported by Fortinet.

SSL VPN host compatibility list

The following table lists the antivirus and firewall client software packages that are supported.

Supported Microsoft Windows XP antivirus and firewall software

Product Antivirus Firewall
Symantec Endpoint Protection 11
Kaspersky Antivirus 2009  
McAfee Security Center 8.1
Trend Micro Internet Security Pro
F-Secure Internet Security 2009

Supported Microsoft Windows 7 32-bit antivirus and firewall software

Product Antivirus Firewall
CA Internet Security Suite Plus Software
AVG Internet Security 2011    
F-Secure Internet Security 2011

SSL VPN support

Product Antivirus Firewall
Kaspersky Internet Security 2011
McAfee Internet Security 2011
Norton 360™ Version 4.0
Norton™ Internet Security 2011
Panda Internet Security 2011
Sophos Security Suite
Trend Micro Titanium Internet Security
ZoneAlarm Security Suite
Symantec Endpoint Protection Small Business Edition 12.0


Resolved Issues

The following issues have been fixed in version 5.4.3. For inquires about a particular bug, please contact CustomerService & Support.


Bug ID Description
391998 CFP2 ports remains down after disconnecting and reconnecting fiber.
Bug ID Description
367514 Executable files may not be blocked by DLP built-in .exe file-type filter.
Bug ID Description
393649 SSH server rekey.


Bug ID Description
392049 Cannot create the second IPv6 VIP, which has the same ext/int IP as the existing one, but different port-forwarding port.
393042 IPv6 traffic not distributed according to the lacp L4 algorithm.
392125 FGT to FMG backup config returned when with the Management server is not configured error message.
293751 After an HA failover, some multicast streams stop.
393034 The printout of show sys interface of FGT-3700D begins with port5 instead of port1.
394582 Update geoip database to version 1.058(20161104).
389398 Can’t find xitem. Drop the response in dhcp relay debug.
394471 Autoupdate tunneling password is shown in cleartext in CLI.


Bug ID Description
393966 Trunk port doesn’t work if the only port member is located on the second switch chip.
370349 Properly spin down SSD during graceful shutdown process.
388046 Process confsyncd memory leak.
395272 unset password is pushed during installation when FGT admin password was changed on FGT.
383748 Read-only admin of one or multiple VDOMs is able to see the entire configuration including other VDOMs.
388280 Some global configurations (admin, interface) are missing when global prof_admin backup full configuration.
395804 The first 20 CPUs became 100% busy when less than 18 million IPv6 sessions were established.
395796 FGT shows Internet-service version(3) is not supported. during signature update and device boot.
382996 Redundant type of interfaces are changing to aggregate after VDOM config restore.
396641 Manualkey-interface incorrect CLI help text.
310199 Delay destroying the fgfm session in error cases.
395796 Add a fix to support internet service version 1.
371672 When create a new ftp-explicit-banner replacemsg, it misses 220 FTP reply code.
369372 With low latency mode on NP6 unit enabled, only first 2 packets are correctly processed by FortiGate.
386626 TCP Session’s timer consistently counting down until it goes expired while the traffic is passing through the unit.
393969 CPU spikes abnormally several times a day.
396574 FG-60E wan1/wan2 no longer come up after rebooting if the interface is down at boot.
387496 FSSO agent did not display all user group information.
389395 RDP-NLA connection to a windows server in multi domain environment overrides originator logon.


Bug ID Description
393966 Trunk port does not work if the only VLAN member is on PoE interfaces.


Bug ID Description
388024 Migrating the fix to limit FSWs based on FGT model on 5.4 branch.
Bug ID Description
389832 TCP/UDP ports 464 are missing in Service Group “Windows AD”.


Bug ID Description
375290 Fortinet Bar may not be displayed properly.
393267 Cannot edit existing Web Filter profile.
376049 Increase requireJS page load timeout.
363546 Error 500 when saving urlfilter list with 4900 entries.
388759 Can’t view interface list via VDOM.
365667 PKI user groups are displayed incorrectly in the Log & Report > Event Log > VPN GUI.
390358 Permission denied. Insufficient privileges error is shown when opening Security Profiles>Anti-Span.
391111 Clicking the Apply button on Explicit Proxy page of one VDOM will disable Explicit Proxy of another VDOM.
393267 Failing to edit existing web filter profile overrides in GUI.
369374 Config backup for non-global admins when VDOMs are disabled.
291231 Added monitor API method to deauthenticate individual firewall users.
399315 Fixed display of botnet entitlement in 5.4 UI.


Bug ID Description
391084 HA unable to sync inversed object entries.
388044 Four-member HA Cluster does not always re-converge properly when HB links are re-established
367158 FortiGate HA config failed to sync issue with fsso-polling.
388446 Session breaks when reboot master in PPPoE mode.
395407 When HA environment with pppoe failover, session down even if enabled session-pickup.
380279 exec reboot and exec shutdown triggered HA failover causes high packet loss.
Bug ID Description
376135 DHCP process is crashing when more than 1500 users connect via dial up IPsec VPN with DHCP over IPsec feature enabled.
375910 enc_npuid and dev_npuid in diag vpn tunnel list output are reverse.
383939 Abnormal tracert through VPN tunnel on FG-30 and FGT/FWF-60D.


Bug ID Description
307465 Fail to Copy & Paste through RDP when connected by SSL VPN web mode.
393698 SSL VPN web mode http/https SSO will keep trying even if the password is wrong.
393943 SSL VPN crash when connect to win2008 smb/CIFS bookmark with wrong password.
393758 Support for js to xml file containing html content.
387800 Skip fedtrul.js under owa.
396218 IE 11 fails to load OWA via SSL web portal.
391825 SSL VPN web mode does not work on port 80.
394936 Web-mode SSL VPN RDP bookmark does not allow connection without pre-populated username and password.
393980 libpthread is wrongly linked to RDP library.



Bug ID Description
394515 URL exempt/allow does not work as expected when certificate-inspection is used.
395365 Webfilter override present certificate resigned using SHA-1.


wad crash and scan unit free one share memory randomly.


Bug ID Description
367514 Build-in AV engine 5.239.
371058 Properly detect executable (exe) file type and multiple file types.


Bug ID Description
394844 When processing HTTP POST request with AV or IPS UTM is enabled, HTTP processing state is not correct.
382483 Unable to connect via SSH when Deep Scan is enabled in firewall policy for Putty.
301575 Proxyd crash on IMAP traffic.
395007 wad cannot process partial HTTP method correctly.
394314 inspect-all SSL profiles don’t work after reboot in explicit proxy on AWS platform.


Bug ID Description
373221 Can’t clear log disk.
395471 Remove unsupported items from PCI-DSS checklist.
217208 Add log support for 802.1X authentication.
393970 crlevel wrong in raw traffic log for geolocation threat.
391786 Logdiskless FGT does not generate a log indicating a sandboxing result.


Bug ID Description
394924 Disable kernel blocking of app-control identified sessions.


Bug ID Description
297361 FGT-KVM– between 2 10G-ports of FGT-KVM04 test, It only got 2.75Gbps TCP throughput.
363439 KVM – UDP throughput of IMIX on KVM with VM08 is lower than it with VM01
372058 Upgrade to multiqueue virtio-net driver to improve network performance for FGT-KVM.
394578 Print VM license not showing proper creation date.
394158 Merge AWS NFR feature for bootstrapping.
393434 iked hang and crash when receiving IKEv1 fragments with frag ID 0.


Bug ID Description
395789 Add jitter to BGP auto start timer to avoid oscillations in some cases.
375932 BFD Path Down message doesn’t trigger BGP to clear the session.

Common Vulnerabilities and Exposures

Bug ID Description
388594 FortiOS local admin password hashes could be obtained.


Known Issues

The following issues have been identified in version 5.4.3. For inquires about a particular bug or to report a bug, please contact CustomerService & Support.


Bug ID Description
374969 FortiSandbox FortiView may not correctly parse the FSA v2.21 tracer file(.json).
392200 Encrypted archive log is generated even though the function archive-log in antivirus profile is unset.
Bug ID Description
385860 FortiGate-3815D does not support 1GE SFP transceivers.


Bug ID Description
379911 DLP filter order is not applied on encrypted files.

Endpoint Control

Bug ID Description
375149 FGT does not auto update AV signature version while Endpoint Control is enabled.
374855 Third party compliance may not be reported if FortiClient has no AV feature.
391537 Buffer size is too small when sending a large vulnerability list to FortiGate.


Bug ID Description
364589 LB VIP slow access when cookie persistence is enabled.



Bug ID Description
375246 invalid hbdev dmz may be received if the default hbdev is used.
357360 DHCP snooping does not work on IPv6.
374346 Adding or reducing stacking connections may block traffic for 20 seconds.


Bug ID Description
369099 FortiSwitch authorizes successfully, but fails to pass traffic until you reboot FortiSwitch.
357360 DHCP snooping may not work on IPv6.
304199 Using HA with FortiLink can encounter traffic loss during failover.


Bug ID Description
289376 Applying the filter All by using the right-click method may not work in the All Sessions page.
303940 Web Site > Security Action filter may not work.
373142 Threat: Filter result may not be correct when adding a filter on a threat and threat type on the first level.
366627 FortiView Cloud Application may display the incorrect drilldown File and Session list in the Applications View.
374947 FortiView may show empty country in the IPv6 traffic because country info is missing in log.
372350 Threat view: Threat Type and Event information are missing in the last level of the threat view.
375187 Using realtime auto update may increase chrome browser memory usage.
368644 Physical Topology: Physical Connection of stacked FortiSwitch may be incorrect.
375172 FortiGate under a FortiSwitch may be shown directly connected to an upstream FortiGate.
372897 Invalid -4 and invalid 254 is shown as the submitted file status.


Bug ID Description
289297 Threat map may not be fully displayed when screen resolution is not big enough.
303928 After upgrading from 5.2 to 5.4, the default flow based AV profile may not be visible or selectable in the Firewall policy page in the GUI.
374166 Using Edge cannot select the firewall address when configuring a static route.
365223 CSF: downstream FGT may be shown twice when it uses hardware switch to connect upstream.
373546 Only 50 security logs may be displayed in the Log Details pane when more than 50 are triggered.
375383 Policy list page may receive a js error when clicking the search box if the policy includes wan-load-balance interface.
375369 May not be able to change IPsec manualkey config in GUI.
374363 Selecting Connect to CLI from managed FAP context menu may not connect to FortiAP.
374521 Unable to Revert revisions on GUI.
374081 wan-load-balance interface may be shown in the address associated interface list.
355388 The Select window for remote server in remote user group may not work as expected.
373363 Multicast policy interface may list the wan-load-balance interface.
372943 Explicit proxy policy may show a blank for default authentication method.
375346 You may not be able to download the application control packet capture from the forward traffic log.
374224 The Ominiselect widget and Tooltip keep loading when clicking a newly created object in the Firewall Policy page.
374322 Interfaces page may display the wrong MAC Address for the hardware switch.
374247 GUI list may list another VDOM interface when editing a redundant interface.
374320 Editing a user from the Policy list page may redirect to an empty user edit page.
375036 The Archived Data in the SnifferTraffic log may not display detailed content and download.
374397 Should only list any as destination interface when creating an explicit proxy in the TP VDOM.


Bug ID Description
374221 SSL VPN setting portal mapping realm field misses the / option.
372908 The interface tooltip keeps loading the VLAN interface when its physical interface is in another VDOM.
374162 GUI may show the modem status as Active in the Monitor page after setting the modem to disable.
375227 You may be able to open the dropdown box and add new profiles even though errors occur when editing a Firewall Policy page.
375259 Addrgrp editing page receives a js error if addrgrp contains another group object.
374343 After enable inspect-all in ssl-ssh-profile, user may not be able to modify allow-invalid-server-cert from GUI.
372825 If the selected SSID has reached the maximum entry, the GUI will reset the previously selected SSID.
374191 The Interface may be hidden from the Physical list if its VLAN interface is a ZONE member in the GUI.
374525 When activating the FortiCloud/Register-FortiGate, clicking OK may not work the first time.
374350 Field pre-shared key may be unavailable when editing the IPsec dialup tunnel created through the VPN wizard.
374371 The IPS Predefined Signature information popup window may not be displayed because it is hidden behind the Add Signature window.
374183 The Security page does not have details for the Forward Traffic log for an IPS attack when displaying a FortiAnalyzer log.
374538 Unable to enable Upload logs to FortiAnalyzer after disabling it.
374373 Policy View: Filter bar may display the IPv4 policy name for the IPv6 policy.
365378 You may not be able to assign ha-mgmt-interface IP address in the same subnet as another port from the GUI.
374237 You may not be able to set a custom NTP server in the GUI if you did not config it in the CLI first.
393927 Policy List > FQDN Object Tooltip should show resolved IP addresses.
393267 Not possible to edit existing Web Filter profile.
Bug ID Description
297832 Administrator with read-write permission for Firewall Configuration is not able to read or write firewall policies.
283682 Cannot delete FSSO-polling AD group from LDAP list tree window in FSSO-user GUI.
365317 Unable to add new AD group in second FSSO local polling agent.
369155 There is no Archived Data tab for email attachment in the DLP log detail page.
356998 urlfilter list re-order on GUI does not work.
387640 Duplicate entry found when auto generate guest user.
379050 User Definition intermittently not showing assigned token.
395711 pyfcgid takes 100% of CPU when managed switch page displayed.
368069 Cannot select wan-load-balance or members for incoming interface of IPSec tunnel.


Bug ID Description
387216 HA virtual MAC is flapping.
399115 ID for the new policy (when using edit 0) is different on master and on slave unit.
396938 Reboot of FGT HA cluster member with redundant HA management interface deletes HA configuration.
397171 FIB of VDOMs in vcluster2 is not synced to the slave.


Bug ID Description
393958 Shellshock attack succeeds when FGT is configured with server-cert-mode replace and an attacker uses rsa_3des_sha.
375020 IPsec tunnel Fortinet bar may not display properly.
374326 Accept type: Any peerID may be unavailable when creating a IPsec dialup tunnel with a pre-shared key and ikev1 in main mode.
386802 Unable to establish phase 2 when using address group/group object as quick mode selectors.
397386 Slave worker blades attempt to establish site to site IPsec VPN tunnel.

Logging & Report

Bug ID Description
300637 MUDB logs may display Unknown in the Attack Name field under UTM logs.
374103 Botnet detection events are not listed in the Learning Report.
367247 FortiSwitch log may not show the details in the GUI, while in CLI the details are displayed.
374411 Local and Learning report web usage may only report data for outgoing traffic.
391786 Logdiskless FGT does not generate a log indicating a sandboxing result.
377733 Results/Deny All filter does not return all required/expected data.


Bug ID Description
393127 WLB measured-volume-based load balance does not work as expected after running for more than one day.
393623 Policy routing change not is not reflected.
385264 AS-override has not been applied in multihop AS path condition.
374306 Number of concurrent sessions affect the convergence time after HA failover.
299490 During and after failover, some MC Groups take up to 480 seconds to recover.
373892 ECMP(BGP) routing failover time.
397087 VRIP cannot be reached on 51E when it is acting as VRRP master.


Bug ID Description
304528 SSL VPN Web Mode PKI user might immediately log back in even after logging out.
303661 The Start Tunnel feature may have been removed.
375137 SSL VPN bookmarks may be accessible after accessing more than ten bookmarks in web mode.
374644 SSL VPN tunnel mode Fortinet bar may not be displayed.
395497 https-redirect for SSL VPN does not support realms.
Bug ID Description
382223 SMB/CIFS bookmark in SSL VPN portal doesn’t work with DFS Microsoft file server error “Invalid HTTP request”.
366291 High CPU usage by SSL VPN.


Bug ID Description
304199 FortiLink traffic is lost in HA mode.
295292 If private-data-encryption is enabled, when restoring config to a FortiGate, the FortiGate may not prompt the user to enter the key.
290708 nturbo may not support CAPWAP traffic.
372717 Unable to access FortiGate GUI via https using low ciphers.
364280 User can not use ssh-dss algorithm to login to FortiGate via SSH.
371320 show system interface may not show the Port list in sequential order.
372717 admin-https-banned-cipher in sys global may not work as expected.
371986 NP6 may have issue handling fragment packets.
287612 Span function of software switch may not work on FortiGate-51E/FortiGate-30E.
355256 After reassigning a hardware switch to a TP-mode VDOM, bridge table does not learn MAC addresses until after a reboot.
393395 The role of new VAP interface should be set as LAN.
393343 Remove botnet filter option if interface role is set to LAN.
392960 FOS support for V4 BIOS.
377192 DHCP request after lease expires is sent with former unicast IP instead of as source.
397642 FGT5HD a-p cluster, LDAP authentication fails for users members of huge amount of LDAP groups.
381363 Empty username with Radius 802.1x WSSO auth.
354490 False positive sensor alarms in Event log.


Bug ID Description
269799 Sniffer config may be lost after upgrade.


Bug ID Description
374138 FortiGate device with VIP configured may be put under Router/NAT devices because of an address change.


Bug ID Description
364280 ssh-dss may not work on FGT-VM-LENC.
378421 Committing any change on SSL VPN Settings over web page returns error:500.



Citrix XenServer limitations

The following limitations apply to Citrix XenServer installations:

  • XenTools installation is not supported.
  • FortiGate-VM can be imported or deployed in only the following three formats:
  • XVA (recommended) l VHD l OVF
  • The XVA format comes pre-configured with default configurations for VM name, virtual CPU, memory, and virtual NIC. Other formats will require manual configuration before the first power on process.

Open Source XenServer limitations

When using Linux Ubuntu version 11.10, XenServer version 4.1.0, and libvir version 0.9.2, importing issues may arise when using the QCOW2 format and existing HDA issues.

Having trouble configuring your Fortinet hardware or have some questions you need answered? Check Out The Fortinet Guru Youtube Channel! Want someone else to deal with it for you? Get some consulting from Fortinet GURU!

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About Mike

Michael Pruett, CISSP has a wide range of cyber-security and network engineering expertise. The plethora of vendors that resell hardware but have zero engineering knowledge resulting in the wrong hardware or configuration being deployed is a major pet peeve of Michael's. This site was started in an effort to spread information while providing the option of quality consulting services at a much lower price than Fortinet Professional Services. Owns PacketLlama.Com (Fortinet Hardware Sales) and Office Of The CISO, LLC (Cybersecurity consulting firm).

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