ProSafe Gigabit 8 Port VPN Firewall FVS318G Reference Manual
7-6 Router and Network Management
1.1 November, 2009
• 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 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.
• Destination Address. These settings determine the destination IP address for this rule which
will be applicable to incoming traffic This rule will be applied only when the destination IP
address of the incoming packet matches the IP address of the selected WAN interface
Selecting ANY enables the rule for any LAN IP destination. WAN1 and WAN2 corresponds
to the respective WAN interface governed by this rule.
• Services. You can specify the desired Services or applications to be covered by this rule. If the
desired service or application does not appear in the list, you must define it using the Services
menu (see “Adding Customized Services” on page 4-16).
• Schedule. You can specify whether the rule is to be applied on the Schedule 1, Schedule 2, or
Schedule 3 time schedule (see “Setting a Schedule to Block or Allow Specific Traffic” on
page 4-29).
See “Using Rules to Block or Allow Specific Kinds of Traffic” on page 4-2 for the procedure on
how to use this feature.
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