Draytek Vigor3910 Series, Руководство пользователя

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Vigor3910 Series User’s Guide 217
Call Filter Check Enable to activate the Call Filter function. Assign a
start filter set for the Call Filter.
Data Filter Check Enable to activate the Data Filter function. Assign a
start filter set for the Data Filter.
Allow pass inbound
gragmented large…
Some on-line games (for example: Half Life) will use lots of
fragmented UDP packets to transfer game data. Instinctively
as a secure firewall, Vigor router will reject these
fragmented packets to prevent attack unless you enable
“Allow pass inbound gragmented large…”. By checking this
box, you can play these kinds of on-line games. If security
concern is in higher priority, you cannot enable “Allow pass
inbound gragmented large…”.
Enable Strict Security
Firewall For the sake of security, the router will execute strict
security checking for data transmission.
Such feature is enabled in default. All the packets, while
transmitting through Vigor router, will be filtered by
firewall. If the firewall system (e.g., content filter server)
does not make any response (pass or block) for these
packets, then the router’s firewall will block the packets
directly.
Block routing packet from
WAN
Usually, IPv6 network sessions/traffic from WAN to LAN will
be accepted by IPv6 firewall in default.
IPv6 - To prevent remote client accessing into the PCs on
LAN, check the box to make the packets (routed from WAN to
LAN) via IPv6 being blocked by such router. It is effective
only for the packets routed but not for packets translated by
NAT.
IPv4 - To prevent remote client accessing into the PCs on
LAN, check the box to make the incoming packets via IPv4
being blocked by such router. It is effective only for the
packets routed but not for packets translated by NAT.