Draytek 2800 Series User Guide

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Vigor2800 Series User’s Guide 
46 
 
Call Filter 
Check Enable to activate the Call Filter function. Assign a start 
filter set for the Call Filter. 
Data Filter 
Check Enable to activate the Data Filter function. Assign a start 
filter set for the Data Filter. 
Log Flag 
For troubleshooting needs you can specify the filter log here. 
None - The log function is not activated. 
Block - All blocked packets will be logged. 
Pass - All passed packets will be logged. 
No Match - The log function will record all packets that are not 
matched. 
Note that the filter log will be displayed on the Telnet terminal 
when you type the log -f command. 
Some on-line games (for example: Half Life) will use lots of fragmented UDP packets to 
transfer game data. Instinctively as a secure firewall, Vigor router will reject these 
fragmented packets to prevent attack unless you enable “Accept Incoming Fragmented UDP 
Packets”. By checking this box, you can play these kinds of on-line games. If security 
concern is in higher priority, you cannot enable “Accept Incoming Fragmented UDP 
Packets”. 
 
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Click Firewall and click Filter Setup to open the setup page.