Port Forwarding - NETGEAR ProSafe FVS336Gv2 Reference Manual

ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336Gv2 Reference Manual

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
(that is, the service is unavailable). You can also create additional firewall rules that are
customized to block or allow specific traffic.
Kinds of Traffic" on page 43 for the procedure on how to use this feature.)
WARNING!
This feature is for advanced administrators only! Incorrect
configuration will cause serious problems.
You can control specific inbound traffic (that is, from WAN to LAN). The LAN WAN Rules
screen 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
• BLOCK by schedule, otherwise Allow
• ALLOW always
• 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 the
VPN firewall is located 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 VPN firewall from SYN flood attack.
• Enable DNS Proxy. Allows the VPN firewall to handle DNS queries from the LAN.
• Enable Stealth Mode. Prevents the VPN firewall from responding to incoming requests
for unsupported services.
As you define your firewall rules, you can further refine their application according to the
following criteria:
• LAN Users. These settings determine which computers on your network are affected by
this rule. Select the desired IP Address in this field.
• WAN Users. These settings determine which Internet locations are covered by the rule,
based on their IP address.
- Any. The rule applies to all Internet IP address.
- Single address. The rule applies to a single Internet IP address.
- Address range. The rule is applied to a range of Internet IP addresses.
(See"Using Rules to Block or Allow Specific
Chapter 8: VPN Firewall and Network Management | 135