3Com SUPERSTACK 3CR16110-95, User Manual, Page: 98 / 214

98 C
HAPTER
7: S
ETTING A
P
OLICY
Click Policy , and then select the Services tab. A window similar to that in
Figure 44 displays.
Figure 44 Services Window
Amending Network
Policy Rules
The Services window contains a table showing the defined Network
Policy Rules . At the bottom of the table is the Default rule which affects
all IP services. Any rules you create for a specific protocol override the
Default rule with respect to that protocol.
LAN Out Checkbox
When the check box is clicked for a specific protocol, users on the LAN
can access servers of that type on the Internet. When the check box is
cleared, users on the LAN
cannot access servers of that type on the
Internet. The default value is enabled. When the Warning Icon is
displayed to the right of the check box, there is a Custom Rule in the
Rules tab section that modifies the behavior of the listed Network Access
Rule.
LAN In Checkbox
When this check box is cleared, access to the protocol is not permitted
from the WAN to the LAN and, if appropriate, from the DMZ to the LAN.
When the service is selected, users on the WAN and DMZ can access all
hosts on the LAN via that protocol. The default value is disabled; use
caution when enabling. When the
Warning Icon is displayed to the right
of the check box, there is a Custom Rule in the Rules tab section that
modifies the behavior of the listed Network Access Rule. The LAN In
column is not displayed if NAT is enabled.
DUA1611-0AAA02.book Page 98 Thursday, August 2, 2001 4:01 PM