Bandwidth Capacity; Features That Reduce Traffic - NETGEAR ProSafe FVS336Gv2 Reference Manual

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336Gv2 Reference Manual

Bandwidth Capacity

The maximum bandwidth capacity of the VPN firewall in each direction is as follows:
• LAN side: 4000 Mbps (four LAN ports at 1000 Mbps each)
• WAN side: 2000 Mbps (load balancing mode, two WAN ports at 1000 Mbps each) or
1000 Mbps (rollover mode, one active WAN port at 1000 Mbps)
In practice, the WAN side bandwidth capacity will be much lower when DSL or cable modems
are used to connect to the Internet. At 1.5 Mbps, the WAN ports will support the following
traffic rates:
• Load balancing mode: 3 Mbps (two WAN ports at 1.5 Mbps each)
• Rollover mode: 1.5 Mbps (one active WAN port at 1.5 Mbps)
As a result and depending on the traffic being carried, the WAN side of the VPN firewall will
be the limiting factor to throughput for most installations.
Using the dual WAN ports in load balancing mode increases the bandwidth capacity of the
WAN side of the VPN firewall. But there is no backup in case one of the WAN ports fail. In
such an event and with one exception, the traffic that would have been sent on the failed
WAN port gets diverted to the WAN port that is still working, thus increasing its loading. The
exception is traffic that is bound by protocol to the WAN port that failed. This protocol-bound
traffic is not diverted.

Features That Reduce Traffic

Features of the VPN firewall that can be called upon to decrease WAN-side loading are as
follows:
• Service blocking
• Blocking sites
• Source MAC filtering
Service Blocking
You can control specific outbound traffic (from LAN to WAN). The LAN WAN Rules screen
lists all existing rules for outbound traffic. If you have not defined any rules, only the default
rule will be listed. The default rule allows all outgoing traffic. (See <pdf>"Using Rules to Block
or Allow Specific Kinds of Traffic" on page 4-43 for the procedure on how to use this feature.)
WARNING!
This feature is for advanced administrators only! Incorrect
configuration will cause serious problems.
132 | Chapter 8: VPN Firewall and Network Management