Operation Manual

Vigor120 Series User’s Guide
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Filter Select Pass or Block for the packets that do not match with the
filter rules.
Log For troubleshooting needs you can specify the filter log by checking
the box. The log will be displayed on Draytek Syslog window.
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 modem will reject these
fragmented packets to prevent attack unless you enable “Accept large incoming
fragmented UDP or ICMP 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 large
incoming fragmented UDP or ICMP Packets”.
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Click Firewall and click Filter Setup to open the setup page.
To edit or add a filter, click on the set number to edit the individual set. The following page
will be shown. Each filter set contains up to 7 rules. Click on the rule number button to edit
each rule. Check Active to enable the rule.