Netgear Modem FVS318N User Manual Page 130

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Firewall Protection
130
ProSafe Wireless-N 8-Port Gigabit VPN Firewall FVS318N
A firewall has two default rules, one for inbound traffic and one for outbound. The default
rules of the wireless VPN firewall are:
Inbound. Block all access from outside except responses to requests from the LAN side.
Out
bound. Allow all access from the LAN side to the outside.
The firewall rules for blocking and allowing traffic on
the wireless VPN firewall can be applied
to LAN WAN traffic, DMZ WAN traffic, and LAN DMZ traffic.
The rules to block or allow traffic are based on the traffic’s category of service:
Out
bound rules (service blocking). Outbound traffic is allowed unless you configure
the firewall to block specific or all outbound traffic.
Inboun
d rules (port forwarding). Inbound traffic is blocked unless the traffic is in
response to a request from the LAN side. You can configure the firewall to allow specific
or all inbound traffic.
Customized se
rvices. You can add additional services to the list of services in the
factory defaults list. You can then define rules for these added services to either allow or
block that traffic (see Add Customized Services on p
age 172).
Qua
lity of Service (QoS) priorities. Each service has its own native priority that impacts
its quality of performance and tolerance for jitter or delays. You can change the QoS
priority, which changes the traffic mix through the system (see Preconfigured Quality of
Service Profiles on p
age 177).
Bandwid
th profiles. After you have a configured a bandwidth profile (see Create
Bandwidth Profiles on p
age 175), you can assign it to a rule.
Outbound Rules (Service Blocking)
The wireless VPN firewall allows you to block the use of certain Internet services by
computers on your network. This is called service blocking or port filtering.
Note: See Enable Source MAC Filtering on page 183 for yet another way
to block outbound traffic from selected computers that would
otherwise be allowed by the firewall.
Table 32. Number of supported firewall rule configurations
Traffic Rule Maximum Number of
Outbound Rules
Maximum Number of
Inbound Rules
Maximum Number of
Supported Rules
LAN WAN 300 300 600
DMZ WAN5050100
LAN DMZ5050100
Total Rules 400 400 800
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