Fortinet Technologies Inc. Page 44 FortiVoice Enterprise Phone System 4.0.0 Administration Guide
Access Enable protocols that this network interface should accept for
connections to the FortiVoice unit itself. (These options do not affect
connections that will travel through the FortiVoice unit.)
• HTTPS: Enable to allow secure HTTPS connections to the
web-based manager, and extension user account through this
network interface.
• HTTP: Enable to allow HTTP connections to the web-based
manager, and extension user account through this network
interface.
Enable this option if you select Centralized phonebook when
configuring programmable phone key. For more information, see
“Set Programmable Phone Key” on page 122.
• PING: Enable to allow ICMP ECHO (ping) responses from this
network interface.
For information on configuring the network interface from which
the FortiVoice unit itself will send pings, see the FortiVoice CLI
Reference.
• SSH: Enable to allow SSH connections to the CLI through this
network interface.
• SNMP: Enable to allow SNMP connections (queries) to this
network interface.
For information on further restricting access, or on configuring the
network interface that will be the source of traps, see
“Configuring the network interfaces” on page 40.
• TELNET: Enable to allow Telnet connections to the CLI through
this network interface.
Caution: HTTP and Telnet connections are not secure, and can
be intercepted by a third party. If possible, enable this option only
for network interfaces connected to a trusted private network, or
directly to your management computer. Failure to restrict
administrative access through this protocol could compromise
the security of your FortiVoice unit. For information on further
restricting access of administrative connections, see “Configuring
administrator accounts” on page 50.
MTU Override default MTU value (1500): Enable to change the maximum
transmission unit (MTU) value, then enter the maximum packet or
Ethernet frame size in bytes.
If network devices between the FortiVoice unit and its traffic
destinations require smaller or larger units of traffic, packets may
require additional processing at each node in the network to
fragment or defragment the units, resulting in reduced network
performance. Adjusting the MTU to match your network can improve
network performance.
The default value is 1500 bytes. The MTU size must be between 576
and 1500 bytes. Change this if you need a lower value; for example,
RFC 2516 prescribes a value of 1492 for the PPPoE protocol.
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