Draytek VIGOR2910

Vigor2910 Series User’s Guide

SYN packets with the identical source and destination addresses, as

well as the port number to victims.

Block Unknown

Protocol Check the box to activate the Block Unknown Protocol function.

Individual IP packet has a protocol field in the datagram header to

indicate the protocol type running over the upper layer. However,

the protocol types greater than 100 are reserved and undefined at

this time. Therefore, the router should have ability to detect and

reject this kind of packets.

Warning Messages We provide Syslog function for user to retrieve message from Vigor

router. The user, as a Syslog Server, shall receive the report sending

from Vigor router which is a Syslog Client.

All the warning messages related to DoS defense will be sent to user

and user can review it through Syslog daemon. Look for the

keyword DoS in the message, followed by a name to indicate what

kind of attacks is detected.

Based on the list of user defined keywords, the URL Content Filter facility in Vigor router

inspects the URL string in every outgoing HTTP request. No matter the URL string is found

full or partial matched with a keyword, the Vigor router will block the associated HTTP

connection.