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DSL Modem User Manual
39
Chapter 5 Configuring Security Settings
Low
If Low is selected in the “Firewall Security Level” screen, the services listed at
the bottom of the screen (NETBIOS-SSN, DNS, EPMAP, PROFILE, NETBIOS-NS,
NETBIOS-DGM, MICROSOFT-DS, SNMP, LDAP, and MICROSOFT-GC,) can be
denied access through the firewall. Click in the appropriate check box to allow or
deny access for a particular service (check mark in the check box to deny; blank
check box to allow). All services not listed are allowed access.
Off
If Off is selected in the “Firewall Security Level” screen, firewall filtering is based
solely on the basic NAT firewall. At this setting, VPN connections can be made, and
DMZ hosting, Port Forwarding, and Applicatiion Level Modem settings are active.
☞
Note: See Appendix F, “Service Acronyms,” for a description of
the services listed in the Firewall Security Level screens.