NETGEAR STM150EW-100NAS, UTM5EW-100NAS manual Outbound Rules Service Blocking, 129

ProSecure Unified Threat Management (UTM) Appliance

A firewall has two default rules, one for inbound traffic and one for outbound. The default rules of the UTM are:

•Inbound. Block all access from outside except responses to requests from the LAN side.

•Outbound. Allow all access from the LAN side to the outside.

The firewall rules for blocking and allowing traffic on the UTM can be applied to LAN WAN traffic, DMZ WAN traffic, and LAN DMZ traffic.

Table 26. Number of supported firewall rule configurations

Traffic rule	Maximum number of	Maximum number of	Maximum number of
	outbound rules	inbound rules	supported rules
LAN WAN	300	300	600
DMZ WAN	50	50	100
LAN DMZ	50	50	100
Total Rules	400	400	800

The rules to block traffic are based on the traffic’s category of service:

•Outbound rules (service blocking). Outbound traffic is usually allowed unless the firewall is configured to disallow it.

•Inbound rules (port forwarding). Inbound traffic is usually blocked by the firewall unless the traffic is in response to a request from the LAN side. The firewall can be configured to allow this otherwise blocked traffic.

•Customized services. Additional services can be added to the list of services in the factory defaults list. These added services can then have rules defined for them to either allow or block that traffic (see Add Customized Services on page 163).

•Quality 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 Create Quality of Service Profiles on page 169).

Outbound Rules (Service Blocking)

The UTM 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 179 for yet another way

to block outbound traffic from selected computers that would otherwise be allowed by the firewall.

Firewall Protection

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