FortiOS 5.4.5 Release Notes

Change Log

Date Change Description
2017-06-08 Initial release of FortiOS 5.4.5.
2017-06-09 Added 403937 to Resolved Issues.

Updated Upgrade Information > Upgrading to FortiOS 5.6.0.

Updated 435124 in Known Issues.

2017-06-13 Removed 416678 from Known Issues.

Added 398052 to Resolved Issues.

Added FGT-140 and FGT-140-POE to Introduction > Supported models > Special branch supported models.



This document provides the following information for FortiOS 5.4.5 build 1138:

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-POE, FG-92D, FG94D-POE, FG-98D-POE, FG-100D, FG-140D, FG-140D-POE, FG- 200D, FG-200DPOE, FG-240D, FG-240D-POE, FG-280D-POE, FG-300D, FG-400D, FG-500D, 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-3800D, FG-3810D, FG-3815D, FG-5001C, FG-5001D

FortiWiFi FWF-30D, FWF-30E, FWF-30D-POE, FWF-50E, FWF-51E, FWF-60D, FWF-60D-POE, FWF-80CM, FWF-81CM, FWF-90D, FWF-90D-POE
FortiGate Rugged FGR-60D, FGR-90D

FortiOS 5.4.5 supports the additional CPU cores through a license update on the following VM models:

l     VMware 16, 32, unlimited l KVM 16

l     Hyper-V 16, 32, unlimited

Pay-as-you-go images FOS-VM64, FOS-VM64-KVM
FortiOS Carrier FortiOS Carrier 5.4.5 images are delivered upon request and are not available on the customer support firmware download page.

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

See the Fortinet Document Library for FortiOS documentation.

Supported models

FortiOS 5.4.5 supports the following models.

Introduction                                                                                                                              Supported models

Special branch supported models

The following models are released on a special branch of FortiOS 5.4.5. To confirm that you are running the correct build, run the CLI command get system status and check that the Branch point field shows 1138.

FGR-30D is released on build 7662.
FGR-35D is released on build 7662.
FGR-30D-A is released on build 7662.
FGT-30E-MI is released on build 6229.
FGT-30E-MN is released on build 6229.
FWF-30E-MI is released on build 6229.
FWF-30E-MN is released on build 6229.
FWF-50E-2R is released on build 7657.
FGT-52E is released on build 6226.
FGT-60E is released on build 6225.
FWF-60E is released on build 6225.
FGT-61E is released on build 6225.
FWF-61E is released on build 6225.
FGT-80E is released on build 6225.
FGT-80E-POE is released on build 6225.
FGT-81E is released on build 6225.
FGT-81E-POE is released on build 6225.
FGT-90E is released on build 6230.
FGT-90E-POE is released on build 6230.
FGT-91E is released on build 6230.
FWF-92D is released on build 7660.
FGT-100E is released on build 6225.


What’s new in FortiOS 5.4.5                                                                                                                Introduction

FGT-100EF is released on build 6225.
FGT-101E is released on build 6225.
FGT-140E is released on build 6257.
FGT-140E-POE is released on build 6257.
FGT-200E is released on build 6228.
FGT-201E is released on build 6228.
FGT-2000E is released on build 6227.
FGT-2500E is released on build 6227.

What’s new in FortiOS 5.4.5

For a detailed list of new features and enhancements that have been made in FortiOS 5.4.5, see the What’s New forFortiOS 5.4.5 document available in the Fortinet Document Library.

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 (FG-3600/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 system global set hw-switch-ether-filter <enable | disable>

FG-900D and FG-1000D                                                                                                               Special Notices

When the command is enabled:

  • ARP (0x0806), IPv4 (0x0800), and VLAN (0x8100) packets are allowed l BPDUs are dropped and therefore no STP loop results l PPPoE packets are dropped l IPv6 packets are dropped l FortiSwitch devices are not discovered l 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 managed by FortiManager 5.0 or 5.2

Any FortiGate unit 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.


Special Notices                                                                                FortiClient (Mac OS X) SSL VPN Requirements

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 5.4.5, 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, 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


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                                                                                                                   Special Notices

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:


Use of dedicated management interfaces (mgmt1 and mgmt2)

For optimum stability, use management ports (mgmt1 and mgmt2) for management traffic only. Do not use management ports for general user traffic.

Upgrade Information

Upgrading to FortiOS 5.4.5

FortiOS version 5.4.5 officially supports upgrading from version 5.4.3 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 a 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.

Upgrading to FortiOS 5.6.0

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.

FortiGate-VM 5.4 for VMware ESXi                                                                                          Upgrade Information

FortiGate-VM 5.4 for VMware ESXi

Upon upgrading to FortiOS 5.4.5, 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:

l operation mode l interface IP/management IP l static route table l DNS settings l VDOM parameters/settings l admin user account l session helpers l 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 l C4 l R3 l I2
  • M4 l D2


Upgrade Information                                                                                                            FortiGate VM firmware

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.

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 5.4.5 support

The following table lists 5.4.5 product integration and support information:

Web Browsers l Microsoft Edge 38 l Microsoft Internet Explorer 11 l Mozilla Firefox version 53 l Google Chrome version 58 l Apple Safari version 9.1 (For Mac OS X)

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

Explicit Web Proxy Browser l Microsoft Edge 40 l Microsoft Internet Explorer 11 l Mozilla Firefox version 53 l Apple Safari version 10 (For Mac OS X) l Google Chrome version 58

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

FortiManager For the latest information, see the FortiManagerand FortiOS Compatibility.

You should upgrade your FortiManager prior to upgrading the FortiGate.

FortiAnalyzer For the latest information, see the FortiAnalyzerand FortiOS Compatibility.

You should upgrade your FortiAnalyzer prior to upgrading the FortiGate.

FortiClient Microsoft

Windows and FortiClient

Mac OS X

l 5.4.1

If FortiClient is being managed by a FortiGate, you must upgrade FortiClient before upgrading the FortiGate.

FortiClient iOS l 5.4.1
FortiClient Android and FortiClient VPN Android l 5.4.0

FortiOS 5.4.5

FortiAP l 5.4.1 and later l 5.2.5 and later

Before upgrading FortiAP units, verify that you are running the current recommended FortiAP version. To do this in the GUI, go to the WiFi Controller> Managed Access Points > Managed FortiAP. If your FortiAP is not running the recommended version, the OS Version column displays the message: A recommended update is available.

FortiAP-S l 5.4.1 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 0256 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 2.6.0 and later.

Some FortiGate models may be supported on specific FortiExplorer versions.


FortiOS 5.4.5 support                                                                                             Product Integration and Support

FortiExplorer iOS l 1.0.6 and later

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

FortiExtender l 3.0.0 l 2.0.2 and later
AV Engine l 5.247
IPS Engine l 3.311
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, 2012 R2, and 2016
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, 6.0, and 6.5

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.

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
Linux CentOS 6.5 / 7 (32-bit & 64-bit)

Linux Ubuntu 16.04

2333. Download from the Fortinet Developer Network

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

SSL VPN support                                                                                                  Product Integration and Support

SSL VPN web mode

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

Product Antivirus Firewall
Symantec Endpoint Protection 11

Supported operating systems and web browsers

Operating System Web Browser
Microsoft Windows 7 SP1 (32-bit & 64-bit)

Microsoft Windows 8 / 8.1 (32-bit & 64-bit)

Microsoft Internet Explorer version 11

Mozilla Firefox version 53

Google Chrome version 58

Microsoft Windows 10 (64-bit) Microsoft Edge

Microsoft Internet Explorer version 11

Mozilla Firefox version 53

Google Chrome version 58

Linux CentOS 6.5 / 7 (32-bit & 64-bit) Mozilla Firefox version 53
Mac OS 10.11.1 Apple Safari version 9

Mozilla Firefox version 53

Google Chrome version 58

iOS Apple Safari

Mozilla Firefox

Google Chrome

Android Mozilla Firefox

Google Chrome

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
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
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 5.4.5. For inquires about a particular bug, please contact CustomerService & Support.


Bug ID Description
392200 Encrypted archive log is generated even though the function archive-log in antivirus profile is unset.


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


Bug ID Description
304276 Policy real time view shows incorrect statistic in session offload to np6.
378482 TCP/UDP traffic fais when NAT/UTM is enabled on FGT-VM in KVM.
395241 After IPS is enabled on LB-VIP policy, this message displays: ipsapp session open failed: all providers busy.
402158 Some policy settings are not installed in complex sessions.
416111 FQDN address is unresolved in a VDOM although the URL is resolved with IP.


Bug ID Description
283682 Cannot delete FSSO-polling AD group from LDAP list tree window in FSSO-user GUI.
356998 urlfilter list re-order on GUI does not work.
371149 30D GUI should support FortiSwitch controller feature when CLI supports it.
372898 User group name should escape XSS script at UserGroups page.
Bug ID Description
374166 Using Edge cannot select the firewall address when configuring a static route.
374350 Field pre-shared key may be unavailable when editing the IPsec dialup tunnel created through the VPN wizard.
378428 FortiGate logs a connection of category deny (red sign) even though traffic is allowed through policy.
379331 DHCP Monitor page does not fully display the page selector pane.
384532 Cannot set IPsec vpn xauth user group inherit from policy in GUI when setting xauthtype auto server.
385482 Webui loads indefinitely when accessing a none access webpage from custom admin profile.
386285 GUI Wizard fails to create FortiClient Dialup IPsec VPN if HA is enabled.
386849 When editing IPsec tunnel, Accessible Networks field cannot load if there is nested address group.
387640 Duplicate entry found when auto generate guest user.
388454 GUI failures when FSSO group contains an apostrophe.
394067 Improve displaying the warning: File System Check Recommended.
395711 pyfcgid takes 100% of CPU when managed switch page displayed.
396430 CSRF token is disclosed in several URLs.
401247 Cannot nest service group within another service group through GUI.
409104 Fix virtual-wire wildcard VLANs not handling u-turn traffic properly.
421918 HTTPSD debug improvement.


Bug ID Description
373200 Quick failover occurs when enabling portmonitor.
382798 Master unit delay in sending heartbeat packet.
386434 HA configuration and VLAN interface disappear from config after reboot.
Bug ID Description
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.
404736 SCTP synchronized sessions in HA cluster, when one reboots the master, the traffic is interrupted.
404874 Some commands for HA in diag debug report and exec tac report need to be updated.
408167 Heartbeat packets broadcast out of ports not configured as HB ports, even though the HB ports are directly connected.
Bug ID Description
377255 Can’t read UTM details on log panel when set location to FortiAnalyzer.
377733 Results/Deny All filter does not return all required/expected data.


Bug ID Description
356330 Cross NP6-Chip IPsec traffic does not work in SLBC environment.
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.
392097 3DES encryption susceptible to Sweet32 attack.
395044 OSPF over IPsec IKEv2 with dialup tunnel does not work as for IKEv1.
397386 Slave worker blades attempt to establish site to site IPsec VPN tunnel.
409050 unregister_netdevice messages appears on console when CAPWAP message is transmitted over IPsec tunnel.
411682 ADVPN failover does not update rtcache entry.
412987 IPsec VPN certificate not validated against PKI user’s CN and Subject.

Logging & Report

Bug ID Description
386742 Missing deny traffic log when user traffic is blocked by NAC quarantine.
397702 Add kernel related log messages for protocol attacks.
397714 Need a fill log disk utility to assist with CC testing.
398802 Forward traffic log shows dstintf=unknown-0 after enabling antivirus.
401511 FortiGate Local Report showing incorrect Malware Victims and Malware Sources.
402712 Username truncated in Webfilter & DLP logs.
406071 DNS filtering shows error: all Fortiguard SDNS servers failed to respond.
417128 Syslog message are missed in Fortigate.
421062 FortiGate 60E stopped sending logs to FortiAnalyzer when reliable enabled.


Bug ID Description
373892 ECMP(BGP) routing failover time.
374306 Number of concurrent sessions affect the convergence time after HA failover.
383013 Message ha_fib_rtnl_hdl: msg truncated, increase buf size showing up on console.
385264 AS-override has not been applied in multihop AS path condition.
392250 BGP session not establishing with Cisco Nexus.
393623 Policy routing change not is not reflected.
397087 VRIP cannot be reached on 51E when it is acting as VRRP master.
399415 Local destined IPv6 traffic matched by PBR.
405408 FortiGate creates corrupted OSPF LS Update packet when certain number of networks is propagated.
421151 ICMP redirect received in root affects another VDOM’s route gateway selection.


Bug ID Description
370986 SSL VPN LDAP user password renew doesn’t work when two factor authentication is enabled.
375827 SSL VPN web mode get Access denied to FOS 5.4.1 GA B1064 under VDOM.
375894 SSL VPN web mode access FMG B1066/FAZ B1066 error.
387276 SSL VPN should support Windows 10 OS check.
389566 “AltGr” key does not work when connecting to RDP-TLS server through SSL VPN web portal from IE 11.
394272 SSL VPN proxy mode can’t proxy some web server URL normally
395497 https-redirect for SSL VPN does not support realms.
396932 Some web sites not working over web SSL VPN.
399784 URL modified incorrectly for a dropdown in application server.
402743 User peer causes SSL VPN access failure even though user group has no user peer.
405799 AV breaks login to OWA via SSLVPN web mode.
406028 Citrix with Xenapp 7.x not working via SSLVPN web portal.
408624 SSL VPN certificate UPN+LDAP authentication works only on first policy.


Bug ID Description
182287 Implementation for check_daemon_enable() is not efficient.
283952 VLAN interface Rx bytes statistics higher than underlying aggregate interface.
302722 Using CLI #get system hardware status makes CLI hang.
306041 SSH error Broken pipe on client when using remote forwarding and SSH deep packet option log port fwd is enabled.
354490 False positive sensor alarms in Event log.
355256 After reassigning a hardware switch to a TP-mode VDOM, bridge table does not learn MAC addresses until after a reboot.


Bug ID Description
375798 Multihoming SCTP sessions are not correctly offloaded.
376423 Sniffer is not able to capture ICMPv6 packets with Hop-by-Hop option when using filter icmp6.
377192 DHCP request after lease expires is sent with former unicast IP instead of as source.
378364 L2TP over IPsec tunnel cannot be established in FortiGate VM.
379883 Link-monitor doesn’t remove the route when it is in “die” state.
381363 Empty username with Radius 802.1x WSSO authentication.
382657 ICMP Packets bigger than 1418 bytes are dropped when offloading for IPsec tunnel is enabled.

Affected models: FG-30D, FG-60D, FG-70D, FG-90D, FG-90D-POE, FG-94D, FG-98D, FG-200D, FG-200D-POE, FG-240D, FG-240D-POE, FG-280D-POE, FWF-30D, FWF-60D, FWF-90D, FWF-90D-POE.

383126 50E/51E TP mode – STP BPDU forwarding destined to 01:80:c2:00:00:00 has stopped after warm/cold reboot.
385455 Inconsistent trusted host behavior.
385903 Changing allowedaccess on FG-200D hardware switch interfaces causes hard-switch to stop functioning.
386271 On FWF-90D after enabling IPS sensor with custom sig, in 60% chance need to wait for 30+ seconds to let ping packet pass.
386395 Missing admin name in system event log related to admin NAC quarantine.
388971 Insufficient guard queue size when sending files to FSA.
389407 High memory usage for radvd process.
389711 Suggest asic_pkts/asic_bytes counter in diagnose firewall iprope show should remain after FortiGate reboot.
391168 Delayed Gratuitous ARP during SLBC Chassis Fail-back.
391460 FortiGuard Filtering Services Availability check is forever loading.
392655 Conserve mode – 4096 SLAB leak suspected.
393275 VDOM admin forced change password while there is other login session gets The name is a reserved keyword by the system“.


Bug ID Description
393343 Remove botnet filter option if interface role is set to LAN.
394775 GUI not behaving properly after successful upload of FTK200CD file.
395039 Loopback interface: Debug Flow and logs do not show the usage of firewall policy ID.
396018 Backup slave member of a redundant interface accept and process incoming traffic.
397984 SLBC – FIB sync may fail if there is a large routing table update.
398852 UDP jumbo frames arrives fragmented on a 3600C are blocked when acceleration is enabled.
399364 VDOM config restore fails for GRE interface bound to IPsec VPN interface.
399648 LAN ports status is up after reboot even if administrative status is down on FG-30D.
400907 Ethernet Ports Activity LED doesn’t light for shared copper ports.
401360 LDAP group query failed when the fixed length buffer overflows.
402742 VDOM list page does not load.
403532 FG-100D respond fragmented ICMP request with non-fragmented reply right after factory reset.
403724 Real number of FortiToken supported doesn’t match tablesize on some platforms.
403937 High memory on VSD.
404258 L2TP second user cannot connect to FG-600D via a router (NAPT).
404480 Link-monitor is not detecting the server once it becomes available.
405234 Unable to load application control replacement message logo and image in explicit proxy (HTTPS).
405757 Interface link not coming up when FortiGate interface is set to 1000full.
406071 DNS Filtering showing error all Fortiguard SDNS servers failed to respond.
406519 Administrative users assigned to prof_admin profile do not have access to diagnose CLI command.
406689 Autoupdate schedule time is reset after rebooting.
Bug ID Description
406972 Device become unresponsive for 30 min. during IPS update when cfg-save option is set to manual.
409828 Cisco switches don’t discover FortiGate using LLDP on internalX ports.
410463 SNMP is not responding when queried on a loopback IP address with an asymmetric SNMP packet path.
410901 PKI peer CA search stops on first match based on CA subject name.
411432 scanunitd gets high CPU when making configuration changes.
411433 voipd shows high CPU when making configuration changes.
411685 If IPPool is enabled in the firewall policy, offloaded traffic to NP6 is encrypted with a wrong SPI.
414243 DNS Filter local FortiGuard SDNS servers failed to respond due to malformed packet.
416678 FG101E/100E has reports of firewall lockups in production.
418205 High CPU utilization after upgrade from FortiOS 5.2.10 to 5.4.4.
420170 Skip the rating for dynamic DNS update type queries.

Web Filter

Bug ID Description
188128 For the Flowbase web filter, the CLI command set https-replacemsg disable does not work.


Bug ID Description
376808 Explicit proxy PAC File distribution in FortiOS 5.4.x not working properly.
383817 WAD crashes with a signal 11 (segmentation fault) in wad_port_fwd_peer_shutdown and wad_http_session_task_end.
398052 WAD session leak.
398405 WAD crashes without backtrace.
400454 Improve WAD debug trace and crash log information.
Bug ID Description
402155 WAS crashes with signal 6 in wad_authenticated_user_authenticate after upgrade to 5.4.3.
402778 WAD does not authorize user if it belongs to more than 256 usergroups with Kerberos authentication.
405264 WAD crash when flush FTP over HTTP traffic.
408503 Cannot access websites when SSL Inspection is set to Inspect All Ports with Proxy Option enabled only for HTTP(ANY).
412462 Fortinet-Bar does not show up on iPhone with iOS 10.2.1 Safari and Google Chrome 57.0.2987.100.
415918 Explicit proxy users are disconnected once a VDOM is created / removed.
421092 WAD consuming memory when explicit webproxy is used.


Bug ID Description
387146 Wireless client RSSO authentication fails after reconnection to AP.

Common Vulnerabilities and Exposures

Bug ID Description
374501 FortiOS 5.4.5 is no longer vulnerable to the following CVE Reference: l 2016-0723

Visit for more information.


Known Issues

The following issues have been identified in version 5.4.5. 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).
Bug ID Description
304199 Using HA with FortiLink can encounter traffic loss during failover.

Endpoint Control

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


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


Bug ID Description
385860 FortiGate-3815D does not support 1GE SFP transceivers.


Bug ID Description
375246 invalid hbdev dmz may be received if the default hbdev is used.


Bug ID Description
357360 DHCP snooping may not work on IPv6.
369099 FortiSwitch authorizes successfully but fails to pass traffic until you reboot FortiSwitch.
374346 Adding or reducing stacking connections may block traffic for 20 seconds.


Bug ID Description
368644 Physical Topology: Physical Connection of stacked FortiSwitch may be incorrect.
372350 Threat view: Threat Type and Event information is missing in the last level of the threat view.
372897 Invalid -4 and invalid 254 is shown as the submitted file status.
373142 Threat: Filter result may not be correct when adding a filter on a threat and threat type on the first level.
375172 FortiGate under a FortiSwitch may be shown directly connected to an upstream FortiGate.
375187 Using realtime auto update may increase chrome browser memory usage.


Bug ID Description
289297 Threat map may not be fully displayed when screen resolution is not big enough.
297832 Administrator with read-write permission for Firewall Configuration is not able to read or write firewall policies.
355388 The Select window for remote server in remote user group may not work as expected.
365223 CSF: downstream FGT may be shown twice when it uses hardware switch to connect upstream.
365317 Unable to add new AD group in second FSSO local polling agent.
365378 You may not be able to assign ha-mgmt-interface IP address in the same subnet as another port from the GUI.
368069 Cannot select wan-load-balance or members for incoming interface of IPsec tunnel.
369155 There is no Archived Data tab for email attachment in the DLP log detail page.

Known Issues

Bug ID Description
372908 The interface tooltip keeps loading the VLAN interface when its physical interface is in another VDOM.
372943 Explicit proxy policy may show a blank for default authentication method.
374081 wan-load-balance interface may be shown in the address associated interface list.
374162 GUI may show the modem status as Active in the Monitor page after setting the modem to disable.
374224 The Ominiselect widget and Tooltip keep loading when clicking a newly created object in the Firewall Policy page.
374320 Editing a user from the Policy list page may redirect to an empty user edit page.
374322 Interfaces page may display the wrong MAC Address for the hardware switch.
374373 Policy View: Filter bar may display the IPv4 policy name for the IPv6 policy.
374397 Should only list any as destination interface when creating an explicit proxy in the TP VDOM.
374521 Unable to Revert revisions in GUI.
374525 When activating the FortiCloud/Register-FortiGate, clicking OK may not work the first time.
375346 You may not be able to download the application control packet capture from the forward traffic log.
373363 Multicast policy interface may list the wan-load-balance interface.
373546 Only 50 security logs may be displayed in the Log Details pane when more than 50 are triggered.
374363 Selecting Connect to CLI from managed FAP context menu may not connect to FortiAP.
375036 The Archived Data in the SnifferTraffic log may not display detailed content and download.
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.
375369 May not be able to change IPsec manualkey config in GUI.
375383 Policy list page may receive a js error when clicking the search box if the policy includes wan-load-balance interface.
Bug ID Description
379050 User Definition intermittently not showing assigned token.
421423 Cannot download certificate in Security Profiles > SSL/SSH Inspection. Workaround: Go to System > Certificates to download.


Bug ID Description
399115 ID for the new policy (when using edit 0) is different on master and on slave unit.


Bug ID Description
393958 Shellshock attack succeeds when FGT is configured with server-cert-mode replace and an attacker uses rsa_3des_sha.
435124 Cannot establish IPsec phase1 tunnel after upgrading from version 5.4.5 to 5.6.0.

Workaround: After upgrading to 5.6.0, reconfigure all IPsec phase1 psksecret settings.


Bug ID Description
299490 During and after failover, some multicast groups take up to 480 seconds to recover.


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

Known Issues


Bug ID Description
284512 When using the Dashboard Interface History widget, the httpds process uses excessive memory and then crashes.
287612 Span function of software switch may not work on FortiGate-51E/FortiGate-30E.
290708 nturbo may not support CAPWAP traffic.
295292 If private-data-encryption is enabled, when restoring config to a FortiGate, the FortiGate may not prompt the user to enter the key.
304199 FortiLink traffic is lost in HA mode.
364280 User cannot use ssh-dss algorithm to log in to FortiGate via SSH.
371320 show system interface may not show the Port list in sequential order.
372717 Option admin-https-banned-cipher in sys global may not work as expected.
392960 FOS support for V4 BIOS.


Bug ID Description
269799 Sniffer config may be lost after upgrade.
289491 When upgrading from 5.2.x to 5.4.0, port-pair configuration may be lost if the port-pair name exceeds 12 characters.


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.


Bug ID Description
434991 WTP tablesize limitation cause WTP entry to be lost after upgrade from v5.4.4 to 5.4.5.

Affected models: FG-30D, FG-30D-POE, FG-30E, FWF-30D, FWF-30D-POE, FWF-30E.



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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