User guide
ManageEngine Firewall Analyzer :: User Guide 
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Zoho Corp. 
2.  Firewall Analyzer displays "Port 8500 needed by Firewall Analyzer is being used 
by another application. Please free the port and restart Firewall Analyzer" when 
trying to start the server.  
Probable cause: The default web server port used by Firewall Analyzer is not 
free.  
Solution: Kill the other application running on port 8500. If you cannot free this 
port, then change the web server port used in Firewall Analyzer.
3.  Unable to start the application in Linux 
Probable cause: It is due to invalid host information in the etc/hosts directory. 
Solution: Change it to the following format, you will be able to start the 
application and get reports.
/etc/hosts 
Entry should be like:  
127.0.0.1 mini localhost 
Importing Logs  
1.  Firewall Analyzer not importing logs from mapped network drive, if Firewall 
Analyzer is running as service.  
Solution: Instead of giving mapped network drive, you give UNC path 
(\\ComputerName\SharedFolder\Resource) (e.g., \\cherry\log\isa_log*.w3c).  
If the issue still persist, check the following:  
•  The account in which Firewall Analyzer service runs must have full 
privilege to that shared drive 
•  If the Firewall Analyzer machine is in a domain xxxxx and the shared 
machine/drive is in a workgroup (i.e., cross domain), Firewall Analyzer will 
not fetch the logs unless the full domain admin privilege is available. 
Reporting 
1.  Why am I seeing empty graphs?  
Probable cause:Graphs are empty either because there is no traffic is passing 
through the firewall or if firewall traffic is not sufficient enough to populate the 
reports table of Firewall Analyzer. 
Solution: If you are starting Firewall Analyzer for the first time or if you are 
shutting down and restarting Firewall Analyzer, it will wait for the reports table to 
be populated with 5000 log records for the first time. From the next time 
onwards, Firewall Analyzer will populate reports table once in 7 minutes or once it 
receives the next 5000 records, whichever is earlier. You can check for the 
number of records received in " Packet Count " icon shown in top right corner in 
client UI. This will list out the details like the number of logs received and also the 










