Draytek Vigor2500V Manual page 66

Branch to Other Filter Set: If the packet matches the filter rule,
the next filter rule will branch to the specified filter set.
Duplicate to LAN: If you want to log the matched packets to
another network device, check this box to enable it. The MAC
Address is defined in General Setup > MAC Address for
Logged Packets Duplication.
Log: Check this box to enable the log function. Use the Telnet
command log-f to view the logs.
Direction: Sets the direction of packet flow. For the Call Filter, this
setting is irrelevant.
For the Data Filter:
IN: Specifies the rule for filtering incoming packets.
OUT: Specifies the rule for filtering outgoing packets.
Protocol: Specifies the protocol(s) this filter rule will apply to.
IP Address: Specifies a source and destination IP address for this
filter rule to apply to. Placing the symbol ! before a particular IP
Firewall
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