ZyXEL Communications ZyWall 110 User Manual page 761

The ZyWALL/USG is not applying my application patrol bandwidth management settings.
Bandwidth management in policy routes has priority over application patrol bandwidth
management.
The ZyWALL/USG's performance slowed down after I configured many new application patrol
entries.
The ZyWALL/USG checks the ports and conditions configured in application patrol entries in the
order they appear in the list. While this sequence does not affect the functionality, you might
improve the performance of the ZyWALL/USG by putting more commonly used ports at the top of
the list.
The ZyWALL/USG's anti-virus scanner cleaned an infected file but now I cannot use the file.
The scanning engine checks the contents of the packets for virus. If a virus pattern is matched, the
ZyWALL/USG removes the infected portion of the file along with the rest of the file. The un-infected
portion of the file before a virus pattern was matched still goes through. Since the ZyWALL/USG
erases the infected portion of the file before sending it, you may not be able to open the file.
The ZyWALL/USG is not scanning some zipped files.
The ZyWALL/USG cannot unzip password protected ZIP files or a ZIP file within another ZIP file. There are also
limits to the number of ZIP files that the ZyWALL/USG can concurrently unzip.
The ZyWALL/USG is deleting some zipped files.
The anti-virus policy may be set to delete zipped files that the ZyWALL/USG cannot unzip. The
ZyWALL/USG cannot unzip password protected ZIP files or a ZIP file within another ZIP file. There
are also limits to the number of ZIP files that the ZyWALL/USG can concurrently unzip.
The ZyWALL/USG's performance seems slower after configuring IDP.
Chapter 42 Troubleshooting
ZyWALL/USG Series User's Guide
761