User's Manual

Wireless Router User Guide

Allow VPN

Pass through

The IPSec, PPTP, and L2TP protocols are used to establish a secure

connection, and are widely used by VPN (Virtual Private

Networking) programs.

• If checked, these VPN connections are allowed.

• If not checked, these VPN connections are blocked.

Note: IPSec sessions must NOT use AH (Authentication Header).

Packets using AH cannot be routed correctly.

Drop fragmented

IP packets

If enabled, fragmented IP packets are discarded, forcing re-

transmission of these packets. In some situations, this could prevent

successful communication, so this setting is normally disabled.

Block TCP Flood

A TCP flood is excessively large number of TCP connection

requests. This is usually a DoS (Denial of Service) attack. This

setting should be normally being enabled.

Block UDP Flood

A UDP flood is excessively large number of UDP packets. This is

often a DoS (Denial of Service) attack, but some streaming

applications also use UDP, and blocking UPD packets may prevent

them from working correctly.

Block

non-standard

packets

Abnormal packets are often used by hackers and in DoS attacks, but

may also be generated by other network devices. (PCs will normally

not generate non-standard packets.) This setting is disabled by

default, but on most networks it can safely be enabled, and doing so

will provide greater protection.