TW100-BRV304 User's Guide
Allow VPN pass-
through
Drop fragmented
IP packets
Block TCP Flood
Block UDP Flood
Block non-
standard packets
If enabled, PCs on the LAN can use VPN software to connect to
remote clients via the Internet connection. The protocols supported
are:
•
IPSec
IPSec protocol is used to establish a secure connection, and is
widely used by VPN (Virtual Private Networking) programs.
•
PPTP
PPTP (Point to Point Tunneling Protocol) is widely used by
VPN (Virtual Private Networking) programs.
•
L2TP
L2TP is a protocol developed by Cisco for VPNs (Virtual Pri-
vate Networks).
If enabled, fragmented IP packets are discarded, forcing re-
transmission of these packets. In some situations, this could prevent
successful communication.
Normally, this setting should be disabled.
A TCP flood is excessively large number of TCP connection re-
quests. This is usually a DoS (Denial of Service) attack.
This setting should normally be enabled.
A UDP flood is excessively large number of UDP packets. This is
usually a DoS (Denial of Service) attack.
This setting should normally be enabled.
Abnormal packets are often used by hackers and in DoS attacks, but
may also be generated by mis-configured network devices. (PCs will
normally not generate non-standard packets.)
This setting should normally be enabled.
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