You can use several advanced settings for Firebox interfaces:
Network Interface Card (NIC) Settings
Configures the speed and duplex parameters for Firebox interfaces to automatic or manual configuration. We recommend you keep the link speed configured for automatic negotiation. If you use the manual configuration option, you must make sure the device the Firebox connects to is also manually set to the same speed and duplex parameters as the Firebox. Use the manual configuration option only when you must override the automatic Firebox interface parameters to operate with other devices on your network.
Set Outgoing Interface Bandwidth
You can use this setting to set the outgoing interface bandwidth to the actual bandwidth that a network provides.
Enable QoS Marking for an Interface
Creates different classifications of service for different kinds of network traffic. You can set the default marking behavior as traffic goes out of an interface. These settings can be overridden by settings defined for a policy.
Determines the setting of the Don’t Fragment (DF) bit for IPSec.
(External interfaces only) Controls the length of time that the Firebox lowers the MTU for an IPSec VPN tunnel when it gets an ICMP Request to Fragment packet from a router with a lower MTU setting on the Internet.
Use Static MAC Address Binding
Uses computer hardware (MAC) addresses to control access to a Firebox interface.
Intra-Interface Traffic Inspection
Enable or disable intra-interface inspection on physical and link aggregation interfaces.