ZyXEL 202H 91-003-194003B 사용자 설명서

P-202H Plus v2 User’s Guide

Chapter 24 Enabling the Firewall

232

Table 77   View Firewall Log

#

This is the index number of the firewall log. 128 entries 

are available numbered from 0 to 127. Once they are 

all used, the log wraps around and the old logs are lost.

23

Time

This is the time the log was recorded in this format. You 

must configure menu 24.10 for real time; otherwise the 

clock will start at 2000/01/01 00:00:00 the last time the 

ZyXEL Device was reset.

mm:dd:yy: e.g., Jan 1 00
hh:mm:ss: e.g., 00:00:00

Packet Information This field lists packet information such as protocol and 

src/dest port numbers (TCP, UDP), or protocol, type 

and code (ICMP).

From and To IP 

addresses
Protocol and port 

numbers

Reason

This field states the reason for the log; i.e., was the rule 

matched, did not match or was there an attack. The set 

and rule coordinates (<X, Y> where X=1,2; Y=00~10) 

follow with a simple explanation. There are two policy 

sets; set 1 (X = 1) is for LAN to WAN rules and set 2 (X 

= 2) for WAN to LAN rules. Y represents the rule in the 

set. You can configure up to 10 rules in any set (Y = 01 

to 10). Rule number 00 is the default rule.

not match
<1,01> dest IP
This means this packet 

does not match the 

destination IP address in 

set 1, rule 1. Other 

reasons (instead of dest 

IP) are src IP, dest port, 

src port and protocol.

This is a log for a DoS attack.

attack
land, ip spoofing, icmp 

echo, icmp vulnerability, 

NetBIOS, smtp illegal 

command, traceroute, 

teardrop or syn flood

Action

This field displays whether the packet was blocked or 

forwarded. None means that no action is dictated by 

this rule.

block, forward or none

After viewing the firewall log, ENTER “y” to clear the log or “n” to retain it.  With either option you will be 

returned to Menu 21- Filter and Firewall Setup.