ZyXEL Communications P-2602HWLNI User Manual

Chapter 18 VPN Screens

P-2602HWLNI User’s Guide

Figure 163   Advanced VPN Policies

The following table describes the fields in this screen.

Table 110   Advanced VPN Policies

VPN - IKE

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 from the drop-down menu 

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. If Local Start Port is left at 0, 

End will also remain at 0.

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.

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. If Remote Start Port is left at 0, 

End will also remain at 0.

Phase 1

Negotiation Mode

Select Main or Aggressive from the drop-down list box. Multiple SAs connecting 

through a secure gateway must have the same negotiation mode.