User's Manual

R-300NP
47
3-2-12 Firewall
A firewall protects your network against threats from the public Internet. Here you can enable or
disable R-300NP’s firewall.
Figure 42 Firewall Setting Screen
Item
Default
Description
Block IP Options
Attack
Enable
WAN/LAN
The R-300NP will ignore any IP packets with IP option
field in the datagram header. The reason for limitation
is IP option appears to be a vulnerability of the security
because it will carry significant information, such as
security, closed user group parameters, a series of
Internet addresses, routing messages...etc.
Interface: WAN/LAN, WAN, LAN
Block Trace Route
Enable
The R-300NP will not forward any trace route packets
if you enable this item.
Block SYN
Fragment Attack
Enable
WAN/LAN
The R-300NP will drop any packets that having SYN
flag and having mote fragment setting if you enable