User's Manual
Table Of Contents
- Chapter 1. Product Introduction
- Chapter 2. Hardware Introduction
- Chapter 3. Preparation
- Chapter 4. Web-based Management
- Appendix A: DDNS Application
    Enterprise 5-Port 10/100/1000T VPN Security Router   
VR-300  series 
- 91 - 
Block UDP Flood 
If the function is enabled, when the number of the current 
UPD-FLOOD packets is beyond the set value, the router will start 
the blocking function immediately. 
The default configuration is disabled. 
Block ICMP Flood 
ICMP is kind of a pack of TCP/IP; its important function is to transfer 
simple signal on the Internet. There are two normal attack ways 
which hackers like to use, Ping of Death and Smurf attack. 
The default configuration is disabled. 
IP TearDrop 
If the function is enabled, the router will block Teardrop attack that is 
targeting on TCP/IP fragmentation reassembly codes. 
Ping Of Death 
If the function is enabled, the router will block Ping of Death attack 
that aims to disrupt a targeted machine by sending a packet larger 
than the maximum allowable size causing the target machine to 
freeze or crash. 
Block WAN Ping 
Enable the function to allow the Ping access from the Internet 
network. 
The default configuration is disabled. 
Remote Management 
Enable the function to allow the web server access of the router from 
the Internet network. 
The default configuration is disabled. 










