D-Link DFL-CPG310 Product Manual - Page 220

Setting the Firewall Security Level • Access is blocked from the WAN (Internet) to all internal networks (LAN, DMZ, WLAN, VLANs, and OfficeMode). • Access is allowed from the internal networks to the WAN, according to the firewall security level (Low/Medium/High). • Access is allowed from the LAN network to the other internal networks (DMZ, WLAN, VLANs, and OfficeMode). • Access is blocked from the DMZ, WLAN, VLAN, and OfficeMode networks to the other internal networks, (including between different VLANs). • HTTP access to the NetDefend Portal (my.firewall and my.vpn) is allowed from all internal networks except the WLAN. The WLAN can only access the NetDefend Portal using HTTPS, unless a specific user-defined rule allows this. • When using the print server function (see Using Network Printers on page 423), access from internal networks to connected network printers is allowed. • Access from the WAN to network printers is blocked. These rules are independent of the firewall security level. You can easily override the default security policy, by creating user-defined firewall rules. For further information, see Using Rules on page 209. Setting the Firewall Security Level The firewall security level can be controlled using a simple lever available on the Firewall page. You can set the lever to three states. 204 D-Link NetDefend firewall User Guide