Select the security level from the list:
• High: Pre-routing and application services are not supported. UDP Port 8000 can be used
to access the services. For example, FTP can use 8021 and Telnet can use 8023. Regular
UDP cannot be used. RG access is permitted via the LAN side but not via the WAN side.
• Low: All outbound traffic and pinhole-defined inbound traffic is allowed. Pre-routing is
supported: port forwarding, DMZ, host application, and host drop. Also supported are
application services: DDNS, DHCP, DNS, H248, IGMP, NTP client, SSH, Telnet, TFTP,
TR-069, and VoIP. The following types of ICMP messages are permitted: echo request and
reply, destination unreachable, and TTL exceeded. Other types of ICMP messages are
blocked. DNS proxy is supported from LAN to WAN but not from WAN to LAN.
• Off: All inbound and outbound traffic is allowed. No firewall security is in effect.
7.45 Configuring the MAC filter