Dos Defense - Draytek Vigor3900 User Manual

Available parameters are listed as follows:
Item
Use Default Policy
Apply
Cancel
After finished the above settings, click Apply to save the configuration.
4 . 5 . 2 D o S D e f e
4 . 5 . 2 D o S D e f e
The DoS function helps to detect and mitigates DoS attacks. These include flooding-type
attacks and vulnerability attacks. Flooding-type attacks attempt to use up all your system's
resources while vulnerability attacks try to paralyze the system by offending the
vulnerabilities of the protocol or operation system.
4 . 5 . 2 . 1
4 . 5 . 2 . 1
Available parameters are listed as follows:
Vigor3900 Series User's Guide
Description
Pass – All of the incoming packets can pass through Vigor
router without any filtering.
Block – All of the incoming packets will be blocked except
the following rules.



The above three policies also can be configured in
Firewall>>Filter Setup>>IP Filter/Application Filter.
Click it to save the configuration.
Click it to discard the settings configured in this page.
n s e
n s e
S w i t c h
S w i t c h
Pass DNS Query – Check the box to make the DNS
query passing through Vigor router's firewall.
Pass Reply of Port Redirection /DMZ – Check the
box to make the outgoing packets processed by Port
Redirection/DMZ passing through Vigor router's
firewall.
Enable Syslog – Check the box to make related
information for the blocked packets being recorded in
Syslog.
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