ZyXEL Communications ZyWALL 300 User Manual

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 Chapter 28 Anti-Virus
ZyWALL USG 300 User’s Guide
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Protocols to Scan
Select which protocols of traffic to scan for viruses.
FTP applies to traffic using the TCP port number specified for FTP in the ALG 
screen.  
HTTP applies to traffic using TCP ports 80, 8080 and 3128.
SMTP applies to traffic using TCP port 25.
POP3 applies to traffic using TCP port 110.
IMAP4 applies to traffic using TCP port 143.
Actions When 
Matched
Destroy infected 
file
When you select this check box, if a virus pattern is matched, the ZyWALL 
overwrites the infected portion of the file (and the rest of the file) with zeros. The 
un-infected portion of the file before a virus pattern was matched goes through 
unmodified. 
Send Windows 
Message 
Select this check box to set the ZyWALL to send a message alert to files’ intended 
user(s) using Microsoft Windows computers connected to the to interface.
Log
These are the log options:
no: Do not create a log when a packet matches a signature(s).
log: Create a log on the ZyWALL when a packet matches a signature(s).
log alert: An alert is an e-mailed log for more serious events that may need more 
immediate attention. Select this option to have the ZyWALL send an alert when a 
packet matches a signature(s).
White List / Black 
List Checking
Bypass white list 
checking
Select this check box to not check files against the white list. This disables the 
white list for traffic that matches this anti-virus rule.
Bypass black list 
checking
Select this check box to not check files against the black list. This disables the 
black list for traffic that matches this anti-virus rule.
File 
decompression
Enable file 
decompression 
(ZIP and RAR) 
Select this check box to have the ZyWALL scan a ZIP file (the file does not have to 
have a “zip” or “rar” file extension). The ZyWALL first decompresses the ZIP file 
and then scans the contents for viruses.  
Note: The ZyWALL decompresses a ZIP file once. The ZyWALL 
does NOT decompress any ZIP file(s) within a ZIP file. 
Table 122   Anti-X > Anti-Virus > General > Edit (continued)
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