Chapter 29 Troubleshooting
USG FLEX H Series User’s Guide
426
The Zyxel Device checks the security policies in the order that they are listed. So make sure that your
custom security policy comes before any other rules that the traffic would also match.
My rules and settings that apply to a particular interface no longer work.
The interface’s IP address may have changed. To avoid this, create an IP address object based on the
interface. This way the Zyxel Device automatically updates every rule or setting that uses the object
whenever the interface’s IP address settings change. For example, if you change LAN1’s IP address, the
Zyxel Device automatically updates the corresponding interface-based, LAN1 subnet address object.
I cannot set up a PPP interface.
You have to set up an ISP account before you create a PPPoE or PPTP interface.
I cannot configure a particular VLAN interface on top of an Ethernet interface even though I
have it configured it on top of another Ethernet interface.
Each VLAN interface is created on top of only one Ethernet interface.
The Zyxel Device’s performance slowed down after I configured many new application patrol
entries.
The Zyxel Device 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 Zyxel Device by putting more commonly used ports at the top of the list.
The Zyxel Device’s anti-malware scanner cleaned an infected file but now I cannot use the file.
The scanning engine checks the contents of the packets for malware. If a malware pattern is matched,
the Zyxel Device removes a portion of the file, while the rest goes through. Since the Zyxel Device erases
a portion of the file before sending it, you may not be able to open the file.
The Zyxel Device sent an alert that a malware-infected file has been found, but the file was still
forwarded to the user and could still be executed.
To Next Page
Loading...
