Backward Compatibility Issues:

• Upgrade from 3.x.x firmware or earlier will require a factory reset operation. And cannot restore the previous version config file.

New Features and Enhancements:

• IPv6 functionality: except IPv6 for MultiWAN and SSL VPN port forwarding are not supported.
• Baseline management (NMS200) support: except IPv6 MIB not supported.
• CLI support.

Known Issues and limitations:

• IGMP snooping functionality is not working.
• Only display one RADVD prefix delegation to advertise.
• Bandwidth functionality is not working over VPN GW-GW tunnel.
• No IPV6 IPSec throughput when use TCP/1518 frame packet.
• [IPv6]Unable to establish the IPV6 manual tunnel with traffic selector as ANY/ANY.
• Not able to run multicast traffic over l2tp.
• Not able to do netbios over l2tp tunnel.
• [IPv6]Displaying the message as address not found instead of 'Blocked from this Browser' for IPv6 policy 'Deny Login From Defined Browsers'.
• UDP traffic with size more than 1452 is not running over ipv6 sslvpn tunnel.
• Unable to configure IPSec VPN policies using WAN ip aliases.
• Logs are not coming in view logs page for added scheduled based ipv6 firewall rule.
• Unable to send the logs over vpn tunnel.
• Traffic is not following wan upload or down load(higher one of them )speeds if the upload and down load speeds having large difference.
• [CLI]Multiple firewall rules are getting added when we give "save" command for multiple times in CLI.
• [CLI]Device not showing the connection status of the IPv4 and IPV6 ipsec policy in cli until we open the connection status page in GUI.
• [CLI]Firewall logs table is not updating properly for enabling and disabling logs through cli.
• Sync time failed from NTP server over VPN tunnel.
• When establish sslvpn ipv6 tunnel,then sslvpn ipv4 tunnel also successfully established.
• [IPv6] static route which interface is WAN can't be recorded IPv6 route table on GUI only.
• Do not record system log about "change of time by NTP".
• Can not manage DUT from lan host when lan traffic reach the limit.
• Start Date/Time is wrong in Traffic Meter page and always using GMT zone.
• The wan upload/download connection speed are displayed incorrectly on detailed status page.
• Log always does not work for DMZ-WAN inbound block rules under NAT mode.
• No bandwidth limit log in view logs.
• [CLI] firewall rules for wan-lan does not have single ip selection for wan destination.
• [CLI] System snmp trap conifgure command does not have option to select snmp v1, v2 or v3.
• [CLI] Show commands do not work for system snmp trap, system time setup, sysinfo, system logs.
• [CLI] Show commands do not work for vpn ipsec and sslvpn logs.
• [CLI] Show wan ipv4 setup does not work if no secondary DNS server configured.
• L2TP/PPTP tunnel only could be established through the primary address.
• Only display one RADVD prefix delegation to advertise.
• [IPv6]Customized VLAN do not support IPv6.
• FTP client passive mode cannot open data connection while inbound rule using "translate to port number".
• [IPv6]QoS priority is not supported for IPv6.
• Wan traffic meter show the wrong statistics data in load balancing or auto rollover mode.

Installation Instructions:

• Download the link below and save it to a convenient place such as your desktop.
  Note: Reboot the firewall before begining the update process.
  
• Select Administration > Settings Backup and Firmware Upgrade from the main/submenu.
• In the Router Upgrade section, click Browse.
• Locate the downloaded file and click Upload.
  This will start the software upgrade to your VPN firewall.  This may take some time. Do not interrupt the upgrade process.
  At the conclusion of the upgrade, your firewall will reboot.