ZyXEL 202H 91-003-194003B 用户手册

P-202H Plus v2 User’s Guide

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Chapter 11 VPN Screens

Figure 54   Advanced Rule Setup

The following table describes the labels in this screen.

Table 38   Advanced Rule Setup

Protocol

Enter 1 for ICMP, 6 for TCP, 17 for UDP, etc. 0 is the default and signifies any 

protocol. 

Enable Replay 

Detection

As a VPN setup is processing intensive, the system is vulnerable to Denial of 

Service (DoS) attacks The IPSec receiver can detect and reject old or 

duplicate packets to protect against replay attacks. Select YES to enable 

replay detection, or select NO to disable it.

Local Start Port 

0 is the default and signifies any port. Type a port number from 0 to 65535. 

Some of the most common IP ports are: 21, FTP; 53, DNS; 23, Telnet; 80, 

HTTP; 25, SMTP; 110, POP3.

End

Enter a port number in this field to define a port range. This port number must 

be greater than that specified in the previous field (or equal to it for configuring 

an individual port). 

Remote Start Port  

0 is the default and signifies any port. Type a port number from 0 to 65535. 

Some of the most common IP ports are: 21, FTP; 53, DNS; 23, Telnet; 80, 

HTTP; 25, SMTP; 110, POP3