Zhone 1740 shdsl Guia Do Utilizador

CHAPTER 6   Packet Filter 

Packet filter, a firewall security measure, examines incoming and outgoing packet headers (IP address, 
port number, and so on) on the network and determines whether to forward the packets based on user-
defined rules (deny, accept, and count).  

The SHDSL router provides packet filter and stateful packet inspection. It has denial of service protection 
against attacks such as ICMP Flood, Ping of Death, IP spoofing, Port Scans, Land Attacks, Tear Drop 
Attacks, IP Source Route and WinNuke Attacks.  

To access the packet filter functions, select PFilter from the advanced menu. The screen will display as 
below, showing a list of the currently configured filter entries. 

 

42                                                                              May 2005                                                               1740-A2-GB20-20