FortiOS 6.0.2 Release Notes


This document provides the following information for FortiOS 6.0.2 build 0163:

Supported models

FortiOS 6.0.2 supports the following models.

FortiGate FG-30D, FG-30E, FG-30E_3G4G_INTL, FG-30E_3G4G_NAM, FG-30D-POE, FG-50E,

FG-51E, FG-52E, FG-60D, FG-60D-POE, FG-60E, FG-60E-POE, FG-61E, FG-70D, FG70D-POE, FG-80D, FG-80E, FG-80E-POE, FG-81E, FG-81E-POE, FG-90D, FG-90D-POE,

FG-90E, FG-92D, FG-94D-POE, FG-98D-POE, FG-100D, FG-100E, FG-100EF, FG-101E,

FG-140D, FG-140D-POE, FG-140E, FG-140E-POE, FG- 200D, FG-200D-POE, FG-200E,

FG-201E, FG-240D, FG-240D-POE, FG-280D-POE, FG-300D, FG-300E, FG-301E,

FG-400D, FG-500D, FG-500E, FG-501E, FG-600D, FG-800D, FG-900D, FG-1000D,

FG-1200D, FG-1500D, FG-1500DT, FG-2000E, FG-2500E, FG-3000D, FG-3100D,

FG-3200D, FG-3700D, FG-3800D, FG-3810D, FG-3815D, FG-5001D, FG-3960E, FG-3980E, FG-5001E, FG-5001E1

FortiWiFi FWF-30D, FWF-30E, FWF-30E_3G4G_INTL, FWF-30E_3G4G_NAM, FWF-30D-POE,

FWF-50E, FWF-50E-2R, FWF-51E, FWF-60D, FWF-60D-POE, FWF-60E, FWF-61E, FWF-90D, FWF-90D-POE, FWF-92D

FortiGate Rugged FGR-30D, FGR-35D, FGR-60D, FGR-90D


Pay-as-you-go images FOS-VM64, FOS-VM64-KVM, FOS-VM64-XEN
FortiOS Carrier FortiOS Carrier 6.0.2 images are delivered upon request and are not available on the customer support firmware download page.

Special Notices

WAN optimization and web caching functions

WAN optimization and web caching functions are removed from 60D and 90D series platforms, starting from 6.0.0 due to their limited disk size. Platforms affected are: l FGT-60D l FGT-60D-POE l FWF-60D l FWF-60D-POE l FGT-90D l FGT-90D-POE l FWF-90D l FWF-90D-POE l FGT-94D-POE

Upon upgrading from 5.6 patches to 6.0.0, diagnose debug config-error-log read will show command parse error about wanopt and webcache settings.

FortiGuard Security Rating Service

Not all FortiGate models can support running the FortiGuard Security Rating Service as a Fabric “root” device. The following FortiGate platforms can run the FortiGuard Security Rating Service when added to an existing Fortinet Security Fabric managed by a supported FortiGate mode:

  • FGR-30D-A l FGR-30D l FGR-35D l FGR-60D l FGR-90D l FGT-200D l FGT-200D-POE l FGT-240D l FGT-240D-POE l FGT-280D-POE l FGT-30D l FGT-30D-POE l FGT-30E l FGT-30E-MI l FGT-30E-MN l FGT-50E Special Notices 7
  • FGT-51E l FGT-52E l FGT-60D l FGT-60D-POE l FGT-70D l FGT-70D-POE l FGT-90D l FGT-90D-POE l FGT-94D-POE l FGT-98D-POE l FWF-30D l FWF-30D-POE l FWF-30E l FWF-30E-MI l FWF-30E-MN l FWF-50E-2R l FWF-50E l FWF-51E l FWF-60D l FWF-60D-POE l FWF-90D l FWF-90D-POE l FWF-92D

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.

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. l 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>


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.

FortiClient (Mac OS X) SSL VPN requirements

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

FortiClient profile changes

With introduction of the Fortinet Security Fabric, 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.

The FortiClient profile on FortiGate is for FortiClient features related to compliance, such as Antivirus, Web Filter, Vulnerability Scan, and Application Firewall. You may set the Non-Compliance Action setting to Block or Warn.

FortiClient users can change their features locally to meet the FortiGate compliance criteria. You can also use FortiClient EMS to centrally provision endpoints. The EMS also includes support for additional features, such as VPN tunnels or other advanced options. For more information, see the FortiOS Handbook – Security Profiles.

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 6.0.2

Supported upgrade path information is available on the Fortinet Customer Service & Support site.

To view supported upgrade path information:

  1. Go to
  2. From the Download menu, select Firmware Images.
  3. Check that Select Product is FortiGate.
  4. Click the Upgrade Path tab and select the following:

l Current Product l Current FortiOS Version l Upgrade To FortiOS Version 5. Click Go.

If you are upgrading from version 5.6.2 or 5.6.3, this caution does not apply.

Before upgrading, ensure that port 4433 is not used for admin-port or admin-sport (in config system global), or for SSL VPN (in config vpn ssl settings). If you are using port 4433, you must change admin-port, admin-sport, or the SSL VPN port to another port number before upgrading.

Physical interface inclusion in zones

Upgrading from 5.6.3 or later removes all of the members of a zone if the zone contains a physical interface and at least one of that physical interface’s VLAN interfaces is removed. For example:

Before Upgrade:

config system zone edit “Trust”

set interface “port1” “Vlan01” “Vlan02” “Vlan03”


After Upgrade:

config system zone edit “Trust”


Remove “port1” from the list and the upgrade will retain the VLANs.

Conditions when physical zone members are removed: l If a physical interface has a VLAN associated (regardless of whether they are in the same zone or any zone) Conditions when VLAN zone members are removed: l If the parent physical interface is also set on a zone

You can use the following options to prepare for the upgrade:

  • Use only physical interfaces that have no VLAN associations Or:
  • Create new VLANs in place of current physical interface zone members, and remove all physical zone members from zones using only the associated, new VLAN entries.

Fortinet Security Fabric upgrade

FortiOS 6.0.2 greatly increases the interoperability between other Fortinet products. This includes:

l FortiAnalyzer 6.0.0 l FortiClient 6.0.0 l FortiClient EMS 6.0.0 l FortiAP 5.4.4 and later l FortiSwitch 3.6.4 and later

Upgrade the firmware of each product in the correct order. This maintains network connectivity without the need to use manual steps.

Before upgrading any product, you must read the FortiOS Security Fabric Upgrade Guide.

Minimum version of TLS services automatically changed

For improved security, FortiOS 6.0.2 uses the ssl-min-proto-version option (under config system global) to control the minimum SSL protocol version used in communication between FortiGate and third-party SSL and TLS services.

When you upgrade to FortiOS 6.0.2 and later, the default ssl-min-proto-version option is TLS v1.2. The following SSL and TLS services inherit global settings to use TLS v1.2 as the default. You can override these settings.

  • Email server (config system email-server) l Certificate (config vpn certificate setting) l FortiSandbox (config system fortisandbox) l FortiGuard (config log fortiguard setting) l FortiAnalyzer (config log fortianalyzer setting)


  • LDAP server (config user ldap) l POP3 server (config user pop3)

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

If you have long VDOM names, you must shorten the long VDOM names (maximum 11 characters) before downgrading:

  1. Back up your configuration.
  2. In the backup configuration, replace all long VDOM names with its corresponding short VDOM name. For example, replace edit <long_vdom_name>/<short_name> with edit <short_name>/<short_ name>.
  3. Restore the configuration.
  4. Perform the downgrade.

Amazon AWS enhanced networking compatibility issue

With this new enhancement, there is a compatibility issue with older AWS VM versions. After downgrading a 6.0.2 image to an older version, network connectivity is lost. Since AWS does not provide console access, you cannot recover the downgraded image.

When downgrading from 6.0.2 to older versions, running the enhanced nic driver is not allowed. The following AWS instances are affected:

  • C3 l C4 l R3
  • I2 l M4 l 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.

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.

FortiGuard update-server-location setting

The FortiGuard update-server-location default setting is different between hardware platforms and VMs. On hardware platforms, the default is any. On VMs, the default is usa.

On VMs, after upgrading from 5.6.3 or earlier to 5.6.4 or later (including 6.0.0 or later), update-server-location is set to usa.

If necessary, set update-server-location to use the nearest or low-latency FDS servers.

To set FortiGuard update-server-location:

config system fortiguard set update-server-location [usa|any] end


Product Integration and Support

FortiOS 6.0.2 support

The following table lists 6.0.2 product integration and support information:

Web Browsers l Microsoft Edge 41 l Mozilla Firefox version 59 l Google Chrome version 65 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 41

l    Microsoft Internet Explorer version 11 l Mozilla Firefox version 59 l Google Chrome version 65 l Apple Safari version 9.1 (For Mac OS X)

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

FortiManager See important compatibility information in Fortinet Security Fabric upgrade on page 10. For the latest information, see FortiManager compatibility with FortiOS in the Fortinet Document Library.

Upgrade FortiManager before upgrading FortiGate.

FortiAnalyzer See important compatibility information in Fortinet Security Fabric upgrade on page 10. For the latest information, see FortiAnalyzer compatibility with FortiOS in the Fortinet Document Library.

Upgrade FortiAnalyzer before upgrading FortiGate.


l Microsoft Windows l Mac OS X l Linux

l 6.0.0

See important compatibility information in Fortinet Security Fabric upgrade on page 10.

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

FortiClient for Linux is supported on Ubuntu 16.04 and later, Red Hat 7.4 and later, and CentOS 7.4 and later.

If you are using FortiClient only for IPsec VPN or SSL VPN, FortiClient version 5.6.0 and later are supported.

FortiClient iOS l 5.6.0 and later
FortiClient Android and FortiClient VPN Android l 5.4.2 and later


FortiAP l 5.4.2 and later l 5.6.0 and later
FortiAP-S l 5.4.3 and later l 5.6.0 and later
FortiSwitch OS

(FortiLink support)

l 3.6.4 and later
FortiController l 5.2.5 and later

Supported models: FCTL-5103B, FCTL-5903C, FCTL-5913C

FortiSandbox l 2.3.3 and later
Fortinet Single Sign-On (FSSO) l 5.0 build 0268 and later (needed for FSSO agent support OU in group filters) l Windows Server 2016 Datacenter 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
FortiExtender l 3.2.1
AV Engine l 6.00012
IPS Engine l 4.00021
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, 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)

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

2336. Download from the Fortinet Developer Network

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

Microsoft Internet Explorer version 11

Mozilla Firefox version 54

Google Chrome version 59

Microsoft Windows 10 (64-bit) Microsoft Edge

Microsoft Internet Explorer version 11

Mozilla Firefox version 54

Google Chrome version 59

Linux CentOS 6.5 / 7 (32-bit & 64-bit) Mozilla Firefox version 54
OS X El Capitan 10.11.1 Apple Safari version 9

Mozilla Firefox version 54

Google Chrome version 59

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
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
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 6.0.2. For inquires about a particular bug, please contact Customer Service & Support.


Bug ID Description
487946 MSS value increases when AV or WEB filter in use resulting in Packet too big message.
489308 scanunit process frequently crashes.
497371 Flow-AV blocks Windows updates (.cab files).

Application Control

Bug ID Description
423140 All IPS sessions lost when new custom signature added.

Authentication & User

Bug ID Description
477392 Cannot use FAC username password and FortiToken two-factor authenticate login HA slave unit.
481469 Failed to resolve hostname for configured CRL URL on a non-managment VDOM.
488566 Renaming guest user group name doesn’t reflect under Guest administrator account assigned leads to black page.
491175 diag test application fnbamd 1 causes fnbamd to enter an idle state and causes authentication failure.
491235 New diag command diag test app wad 13.
491241 Enhance diag command diag test app fnbamd 1.
493470 Authenticated user receives Oops “Authentication requested” referencing a proxy policy which does not have authentication.
493930 Admins who use dedicated HA mgmt interfaces are not visible in the CLI.
495210 Guest user accounts do not show expiration time, but time until expiration only.
496524 After successful wired portal auth, the wired PC still gets many http redirection and fails to access the internet.


Bug ID Description
463982 FortiManager IP is unset in FortiGate CM.
479607 Scheduled auto-update happens twice in 10 seconds but a log entry for the first try is not logged.
481058 Configuration revision control list can’t be retrieved from FortiCloud.


Bug ID Description
478524 Diskless model missing full-archive-proto in config DLP sensor when only FortiCloud logging enabled.
486958 Scanunit signal 14 alarm clock caused by DLP scanning bz2 file.
492624 DLP blocking web sites in FortiOS v6.0 GA.
496255 Some XML-based MS Office files are recognized as ZIP files.


Bug ID Description
474612 SNAT is using low ports below 1023.
475539 Inaccurate netflow export. Traffic measurements do not match with SNMP readings.
478681 Should be able to disable SNAT when a VIP exists and central-NAT is enabled.
492961 Set utm-status disable did not hide profile-group. Unset profile-group will make profile-protocol-options empty.
498188 Dirty_session_check in FortiGate drops all established VIP64 sessions.
502579 Local-In-Policies with FQDN address is not working after upgrade from 5.6 to 6.0.1.


Bug ID Description
414172 HTTPsd / DNSproxy/ high CPU/memory with high rate UDP 1Byte spoofing traffic.
Bug ID Description
402457 Suggest to improve IPsec VPN monitor page Proxy ID Source and Proxy ID Destination fields.


Bug ID Description
413881 VDOM link tooltip displays Failed to retrieve info.
444104 Accept/Decline buttons cannot be seen in GUI with a long login disclaimer and screen under certain resolutions.
449598 Remote LDAP User Definition wizard does not pull users.
457627 Want the ability to change the date/time format displayed in the GUI of the FortiGate.
457721 FortiLink Switch-controller GUI – allow user to edit Port Description for FortiLink/ISL.
457966 Virtual wire pair > Add VLAN range filter on GUI.
460617 GUI FortiGuard Check Again button doesn’t work as expected due to FortiGuard service 8888/53 incorrectly routed.
462011 GUI is blank when accessed with RADIUS user with read-access profile and the FortiGate is managed by FortiManager.
462072 GUI should show full FQDN name in reputation search result.
468465 Some filters do not return logs when source is FortiCloud.
468797 Cannot filter by date or timestamp when viewing logs from FortiCloud.
469082 prof_admin profile admins are not able to display GUI IPv4 source address.
470241 Raw logs are downloaded from the default location even if you select another log device in GUI.
472023 Outbreak prevention detection makes “clean” counter increment in Advanced Threat Protection Stats widget.
472558 DHCP Server GUI – GUI populates wrong information when switching from DHCP Relay to DHCP


473808 Column filter is not persistent and is removed after refreshing the page.
474807 Cannot restore default page in replacement message group.
475036 Virtual Server Duplicate Entry found error in GUI.
477393 Negative values in Load Balance monitor logs.
477870 Alias for modem interface present in GUI but not in CLI.
479468 The link status is lost after SD-WAN GUI changes to List Edit.
479937 GUI should hide options that don’t apply to certificate inspection.
481902 When accessing FortiView > Websites page, gets error Failed to get FortiView data and httpsd keeps crashing.
482628 CPU.Speculative.Execution.Timing.Information.Disclosure signature can’t be filtered if Application is selected.
Bug ID Description
489674 When scroll to the end of an muTable, GUI should shows 100% of entry.
489675 The Firefox web browser sometimes cannot delete performance SLA rules.
489715 Destination address should not be mandatory in GUI in SD-WAN Rules.
492898 Cannot delete FSSO AD group entries in GUI anymore.
493351 Object tooltip of last page should not always display on current page.
493773 SD-WAN rule in GUI unable to select (whether as source or destination) the address group grp_ citrixfarm.
494724 When creating trunk interface on managed FSW, FSW ports in right-side list show down, even when some are up.
496613 Editing web filter profile in GUI deletes web-proxy profile and URL filter entries.
497667 FortiSwitch Ports page loads very slowly.
502785 Remove # of interfaces from device list.


Bug ID Description
408886 Uninterrupted upgrade from B718 to tag 9702 failed with 1.5M BGP routes and 6M sessions load.
461915 When standalone config sync is enabled in FGSP, IPv6 setting of interface is synced.
473806 Management interface IP address replicating to slave when using standalone management VDOMs.
473806 Management interface IP address replicating to slave when using standalone management VDOMs.
474622 IPsec itn=0 after a unit joins an FGSP cluster.
482548 Conserve mode caused by hasync consuming most of memory.
485340 Cluster Uptime: -141 days -20:-31:-50.
486552 vcluster HA failover fails with large site-to-site IPsec VPN configuration on 3800D.
487444 FortiGate stops accepting traffic from any interface in a hardware switch after HA failover in 80/81E.
491311 Management port has sync’ed when creating a new NAT VDOM.
493759 When vcluster2 is removed from HA config, all active sessions are killed once session-ttl is reached.
494029 After failover, sometimes cannot connect to management-ip of backup device.
501147 Moving VDOM to virtual cluster from GUI causes cluster to go out of sync.


Bug ID Description
478185 Improve the ability of detection fragmented intrusion attacks.
489557 Strange traceroute issues when IPS is enabled.


Bug ID Description
486756 Traffic is not fragmented for IPsec VPN when Proxy-based UTM is enabled.
489990 Make PKI validation of IDi & Certificate Identity optional.
490066 FortiClient with IPsec with Proxy / Webfilter – Fragmentation is needed.
491305 Packet from FortiClient cannot go through VXLAN over IPsec depending on packet size.
492046 FortiGate does not respond to INFORMATIONAL exchange message as requested by RFC.
493918 Memory leak with IKED.

Log & Report

Bug ID Description
459306 Suggest to lower Threat Level for oversized file.
493140 Need to see application signature names instead of LDS under Logs & Report > System event logs.
494040 Creating or modifying security profiles generate multiple logs with misleading action.
497357 FortiGate logs show the action as block when we use DNS filter and if a DNS query timeout happens.
498519 Web filter authentication failed to set status field in the event log message.


Bug ID Description
479678 IPpool does not work properly in explicit Proxy-policy.
482916 WAD crashes with signal 6.
486821 Web application Symphony fails with AV profile enabled in policy.
487096 SSL handshake fails when activate ESET application.
491417 FortiGate is dropping server hello packets when URLFILTER is enabled.
Bug ID Description
491424 Adjust the proxy-auth-timeout default value and unit.
491630 With UTM enabled, client failed to get response from server, gets 500 Internal error.
494081 WAD process crashes with signal 11 after upgrading the firmware to v5.6.4.


Bug ID Description
443948 High memory usage for zebos_launcher and isisd.
482631 OSPF adjacencies lost, FGFMD high CPU while pushing policies from FortiManager.
491423 BGP shutdown neighbor capability-default-originate parameter always in use.
491679 FortiGate chooses higher metric OSPF E2 route for traffic under some circumstance.
492063 Route map not able to set attribute with BGP conditional advertisement.
493454 Large PIM SM bootstrap packets are not forwarded with kernel 3.2.
494393 Router access list should not default to prefix any and exact match disable.
500673 SD-WAN rules with application do not work after HA switchover.


Bug ID Description
466438 High CPU usage by sslvpnd.
483712 sslvpnd consumes high memory causing FortiGate to enter conserve mode.
486918 SSL VPN web mode unable to load the page correctly.
489827 In SSL VPN web mode, URL is not loading.
491895 Web mode SSL VPN HTTP bookmark not working.
494948 Confluence software is not rendered correctly in web mode.
494960 SSL VPN web mode has trouble loading internal web application.
494978 authd registers SSL VPN user with wrong user/group information and breaking SSL VPN after upgrade to 5.6.4.
498249 Need update SCEP over SSL host name/certificate check.
501769 SSL VPN: Bookmark to internal web site not loading correctly – JavaScript errors.


Bug ID Description
493685 Hardware switch flooding traffic.


Bug ID Description
370953 SLBC worker blade failed to re-synchronize with the config master blade due to the frozen confsync daemon.
394509 No log entry for failed admin PKI authentication.
414081 SMB1 support has been by default disabled under part models.
441483 Confused by set enable-shaper disable to enable HPE protection.
459273 Slave worker blade loses local administrator accounts.
462178 Front panel SPEED LED is flashing green when transmitting and receiving data.
466317 [api] is in Z state.
468938 Kernel panic on 3700D – slave.
472267 DNS filter performance improvement.
472270 SNMP feature for DNS filter counts.
473354 Suggest enable per-session-accounting on NP6Lite by default.
477886 PRP support.
479142 SLBC 5001D slave blade going out of sync.
481783 DHCP address assignment sometimes fails – DHCPD crashing multiple times.
485781 Deleting EMAC VLAN interface on a different VDOM causing connectivity loss to the EMAC VLAN for 5-7 pings.
493219 Softirq and nice are taking high CPU resources when sending and receiving packets with a virtual wire pair.
494603 FortiGate in transparent mode is not accessible over https/ssh (administrative access) once trusted host is configured.
494707 FortiGate trusthost settings not respected.
499332 No error message when configuring address .067 and address converted with .55.
499435 Allow packet sniffer to use RAM disk.
499793 FortiGate set wrong timezone for Paraguay.


Bug ID Description
495994 After upgrade to 5.4.9, observing a lot of IPS syntax errors on the console screen.


Bug ID Description
493225 FTG-VM01 is missing diag sys mpstat command option.
499154 FortiGate Azure rejects static route configure pushing from FortiManager.
501911 In FOS-AWS prompt, user password = instance ID, and force user to change password upon initial log in.
Bug ID Description
471638 FortiGate disconnects all clients when they roam from AP to AP.
479415 Incorrect auth-success-page Authentication Success Page Replacement message.


Bug ID Description
478634 Debug commands for SIP filter are not applied.

Web Filter

Bug ID Description
454634 Web filter set warning-prompt per-domain is warning per-category instead of per-domain.
476806 FortiOS incorrectly sends ICMP “Destination Unreachable” with WF/certificate inspection.
486171 The Web Rating Overrides option doesn’t work with flow-mode.
490377 The Web Rating Overrides option doesn’t work properly on proxy-based.
498231 Web sites like is catogized as malicious category incorrectly.

Web Proxy

Bug ID Description
500182 UDP over SOCKS proxy.


Bug ID Description
491248 VAP RADIUS-based MAC authentication should support CoA.
491769 Support for third-party external portal with RADIUS MAC authentication.
495995 Custom categories override doesn’t work.

Common Vulnerabilities and Exposures

Visit for more information.

Bug ID CVE references
450553 FortiOS 6.0.2 is no longer vulnerable to the following CVE Reference:

l CVE-2017-12150 l CVE-2017-12151 l CVE-2017-12163

487421 FortiOS 6.0.2 is no longer vulnerable to the following CVE Reference:

l CVE-2018-13365

495090 FortiOS 6.0.2 is no longer vulnerable to the following CVE Reference:

l CVE-2018-13366

496431 FortiOS 6.0.2 is no longer vulnerable to the following CVE Reference:

l CVE-2018-9192

499552 FortiOS 6.0.2 is no longer vulnerable to the following CVE Reference:

l CVE-2016-7431


Known Issues

The following issues have been identified in version 6.0.2. For inquires about a particular bug or to report a bug, please contact Customer Service & Support.

Application Control

Bug ID Description
435951 Traffic keeps going through the DENY NGFW policy configured with URL category.

FortiGate 3815D

Bug ID Description
385860 FG-3815D does not support 1GE SFP transceivers.
Bug ID Description
256264 Realtime session list cannot show IPv6 session and related issues.


Bug ID Description
304199 Using HA with FortiLink can encounter traffic loss during failover.
357360 DHCP snooping may not work on IPv6.


Bug ID Description
375172 FortiGate under a FortiSwitch may be shown directly connected to an upstream FortiGate.
453610 Fortiview->Policies(or Sources)->Now, it shows nothing when filtered by physical interface at PPPoE mode.
460016 In Fortiview > Threats, drill down one level, click Return and the graph is cleared.
482045 FortiView – no data shown on Traffic from WAN.
494731 Incorrect reporting in Fortiview.


Bug ID Description
439185 AV quarantine cannot be viewed and downloaded from detail panel when source is FortiAnalyzer.
442231 Link cannot show different colors based on link usage legend in logical topology real time view.
451776 Admin GUI has limit of 10 characters for OTP.
470589 The Forward Traffic Log Details panel Security tab does not display security log details when multiple log devices are enabled.
487350 FortiGuard Filtering Services Availability showing Unavailable on GUI when no valid Anti-spam license is present.
493839 Cannot change quota type (time-based, traffic-based).


Bug ID Description
451470 Unexpected performance reduction in case of Inter-Chassis HA fail-back with enabling HA override.
479987 FG MGMT1 does not authenticate Admin RADIUS users through primary unit (secondary unit works).
503433 hasync daemon crashes when admin session times out and cluster could be out of sync for a short period.


Bug ID Description
445113 IPS engine 3.428 on FortiGate sometimes cannot detect Psiphon packets that iscan can detect.


Bug ID Description
469798 The interface shaping with egress shaping profile doesn’t work for offloaded traffic.
481201 The OCVPN feature is delayed about one day after registering on FortiCare.

Log & Report

Bug ID Description
412649 In NGFW Policy mode, FortiGate does not create webfilter logs.

Security Fabric

Bug ID Description
403229 In FortiView display from FortiAnalyzer, the upstream FortiGate cannot drill down to final level for downstream traffic.
411368 In FortiView with FortiAnalyzer, the combined MAC address is displayed in the Device field.


Bug ID Description
405239 URL rewritten incorrectly for a specific page in application server.


Bug ID Description
295292 If private-data-encryption is enabled, when restoring config to a FortiGate, the FortiGate may not prompt the user to enter the key.
364280 User cannot use ssh-dss algorithm to login to FortiGate via SSH.
436746 NP6 counter shows packet drops on FG-1500D. Pure firewall policy without UTM.
440411 Monitor NP6 IPsec engine status.
466048 Huawei USB LTE E3276 cannot be detected.
468684 EHP drop improvement for units using NP_SERVICE_MODULE.
472843 When FortiManager is set for DM = set verify-install-disable, FortiGate does not always save script changes.
474132 FG-51E hang under stress test since build 0050.
482497 Running diagnose npu np6lite session in FGT-201E results in high CPU and system instability.
494042 If we create VLAN in VDOM A, then we cannot create ZONE name with the same VLAN name in VDOM B.


Bug ID Description
470575 After upgrading from 5.6.3, g-sniffer-profile and sniffer-profile exist for IPS and webfilter.
473075 When upgrading, multicast policies are lost when there is a zone member as interface.
Bug ID Description
481408 When upgrading from 5.6.3 to 6.0.0, the IPv6 policy is lost if there is SD-WAN member as interface.
494217 Peer user SSL VPN personal bookmarks do not show when upgrade to 6.0.1. Workaround: Use CLI to rename the user bookmark to the new name.

Web Filter

Bug ID Description
480003 FortiGuard category does not work in NGFW mode policy.



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)
  • 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.

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