Knowledge Base

• VLAN tagging support on WANs

• DDNS: Updated support for changeip.com

• Web admin access problems related to MTU size
• On WAN settings change, the WAN may unnecessarily reconnect when apply changes
• Could not save more than one Allowed Source IP subnets in Admin Security page

Release 4.1.0, Feb 20, 2008

Release 4.0, Sept 19, 2007

Improvements:

• Prioritization of SIP call traffic
• Alert message for not enabling health check on any WAN
  

Bug Fixes:

• DHCP WAN connections might incorrectly reconnect on DHCP IP renewal

• DNS Record Import Wizard to import DNS records via zone transfer
• UPnP / NAT-PMP support
• Ability to specify WINS Servers in LAN DHCP Server Settings
• WAN selection for Least Used / Lowest Latency algorithms in Outbound Policy
• Auto MTU detection
• New Client List
• Ability to define Router Name for the Balance unit for easier tracking in Email Notification, SNMP, NSLookup, etc.

• Enhanced Email Notification to support SMTPS and multiple recipients
• Revamped Event Log, WAN connection status, and Email Notification messages
• Enhanced SIP ALG to support T.38
• Enhanced browsers compatibility; added support for Google Chrome 2.0 or above

• Occasional loss of configuration on reboot

• Improved role changing accuracy in High Availability mode.
• Improved DNS compatibility with Unix clients.

• DNS zone transfer issue with some DNS servers.
• WAN links cannot go up if ping based health check is enabled on all of them and all ping hosts are host names rather than IP addresses.
• Potential problem in sending email notification via some authentication enabled email servers.
• In rare occasions, network time synchronization may trigger device failover and failback momentarily.

• Since firmware 4.7, if IP Forwarding is enabled on a WAN, health check and DNS resolution packets over the WAN will be originated from the WAN IP address instead of the LAN IP address.

• New Outbound Algorithms: Latency and Least Used (for B200, B300, B380, B700 & B710 only)
• Intrusion Detection and DOS Prevention feature in Firewall
• DSL Optimization
• Drag-and-drop user interface
• Service Forwarding
• Option in 'Reply ICMP Ping Requests' in WAN configuration
• Bad DNS Server detection
• Verbose E-mail test output

• High CPU load in High Availability Slave standby mode

• SIP ALG support
• Wildcard DNS "A" and "CNAME" record support
• DDNS service provider "tzo.com" support
• Test Email Notification support
• FTP Pass-through custom control port support

• Another SMTP authentication method "AUTH LOGIN" in E-mail notification

• Prioritization of SIP call traffic
• DNS service availability on WAN connections
• Increased supported number of characters in DNS TXT records to 255
• Alert message for not enabling health check on any WAN
  

• DHCP WAN connections might incorrectly reconnect on DHCP IP renewal