ZyXEL Vantage CNM User Guide - Page 179

Configuring IDP Signatures

Page 179 highlights

Chapter 6 Device Security Settings to be taken when a packet or stream matches a signature. The following figure and table describes these actions. Note that in addition to these actions, a log may be generated or an alert sent, if those check boxes are selected and the signature is enabled. Figure 71 Device Operation > Device Configuration > Security > IDP > Signature > Actions The following table describes signature actions. Table 64 Device Operation > Device Configuration > Security > IDP > Signature > Actions ACTION DESCRIPTION No Action The intrusion is detected but no action is taken. Drop Packet The packet is silently discarded. Drop Session When the firewall is enabled, subsequent TCP/IP packets belonging to the same connection are dropped. Neither sender nor receiver are sent TCP RST packets. If the firewall is not enabled only the packet that matched the signature is dropped. Reset Sender When the firewall is enabled, the TCP/IP connection is silently torn down. Just the sender is sent TCP RST packets. If the firewall is not enabled only the packet that matched the signature is dropped. Reset Receiver When the firewall is enabled, the TCP/IP connection is silently torn down. Just the receiver is sent TCP RST packets. If the firewall is not enabled only the packet that matched the signature is dropped. Reset Both When the firewall is enabled, the TCP/IP connection is silently torn down. Both sender and receiver are sent TCP RST packets. If the firewall is not enabled only the packet that matched the signature is dropped. 6.9.4 Configuring IDP Signatures Use this screen to see the device's "group view" signature screen where you can view signatures by attack type. To search for signatures based on other criteria such as signature name or ID, then click the Switch to query view link to go to the "query view" screen. You can take actions on these signatures as described in Section 6.9.3 on page 178. To revert to the default actions or to save sets of actions, go to the Device Vantage CNM User's Guide 179

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Chapter 6 Device Security Settings
Vantage CNM User’s Guide
179
to be taken when a packet or stream matches a signature. The following figure
and table describes these actions. Note that in addition to these actions, a log may
be generated or an alert sent, if those check boxes are selected and the signature
is enabled.
Figure 71
Device Operation > Device Configuration > Security > IDP > Signature >
Actions
The following table describes signature actions.
6.9.4
Configuring IDP Signatures
Use this screen to see the device’s “group view” signature screen where you can
view signatures by attack type. To search for signatures based on other criteria
such as signature name or ID, then click the
Switch to query view
link to go to
the “query view” screen.
You can take actions on these signatures as described in
Section 6.9.3 on page
178
. To revert to the default actions or to save sets of actions, go to the
Device
Table 64
Device Operation > Device Configuration > Security > IDP > Signature >
Actions
ACTION
DESCRIPTION
No Action
The intrusion is detected but no action is taken.
Drop Packet
The packet is silently discarded.
Drop Session
When the firewall is enabled, subsequent TCP/IP packets belonging
to the same connection are dropped. Neither sender nor receiver are
sent TCP RST packets. If the firewall is not enabled only the packet
that matched the signature is dropped.
Reset Sender
When the firewall is enabled, the TCP/IP connection is silently torn
down. Just the sender is sent TCP RST packets. If the firewall is not
enabled only the packet that matched the signature is dropped.
Reset Receiver
When the firewall is enabled, the TCP/IP connection is silently torn
down. Just the receiver is sent TCP RST packets. If the firewall is not
enabled only the packet that matched the signature is dropped.
Reset Both
When the firewall is enabled, the TCP/IP connection is silently torn
down. Both sender and receiver are sent TCP RST packets. If the
firewall is not enabled only the packet that matched the signature is
dropped.