Netgear SRXN3205 SRXN3205 Reference Manual - Page 165

ProSafe Wireless-N VPN Firewall SRXN3205 Reference Manual See "Enabling Source MAC Filtering (Address Filter)" on page 5-20 for the procedure on how to use this feature. Features that Increase Traffic Features that tend to increase WAN-side loading are as follows: • Port forwarding • Port triggering • Exposed hosts • VPN tunnels Port Forwarding The firewall always blocks DoS (Denial of Service) attacks. A DoS attack does not attempt to steal data or damage your PCs, but overloads your Internet connection so you can not use it (i.e., the service is unavailable). You can also create additional firewall rules that are customized to block or allow specific traffic. Warning: This feature is for Advanced Administrators only! Incorrect configuration will cause serious problems. You can control specific inbound traffic (from WAN to LAN). Inbound Services lists all existing rules for inbound traffic. If you have not defined any rules, only the default rule will be listed. The default rule blocks all inbound traffic. Each rule lets you specify the desired action for the connections covered by the rule: • BLOCK always • ALLOW always • BLOCK by schedule, otherwise allow • ALLOW by schedule, otherwise block You can also enable a check on special rules: • VPN Passthrough. Passes the VPN traffic without any filtering, specially used when this firewall is between two VPN tunnel end points. • Drop fragmented IP packets. Drops any fragmented IP packets. • UDP Flooding. Limits the number of UDP sessions created from one LAN machine. • TCP Flooding. Protects the firewall from SYN flood attack. Firewall and Network Management 9-5 v1.0, October 2008