Protocol Anomalies - ZyXEL Communications USG40 User Manual

Table 135 Configuration > Security Policy > ADP > Profile > Add-Traffic-Anomaly (continued)
LABELS
Threshold (pkt/sec)
OK
Cancel
Save

18.3.4 Protocol Anomalies

Protocol anomalies are packets that do not comply with the relevant RFC (Request For Comments).
Protocol anomaly detection includes:
• TCP Decoder
• UDP Decoder
• ICMP Decoder
Chapter 18 Security Policy
DESCRIPTION
(Flood detection only.) Select a suitable threshold level (the number of packets
per second that match the flood detection criteria) for your network. If you
choose a low threshold, most traffic anomaly attacks will be detected, but you
may have more logs and false positives.
If you choose a high threshold, some traffic anomaly attacks may not be
detected, but you will have fewer logs and false positives.
Click OK to save your settings to the ZyWALL/USG, complete the profile and
return to the profile summary page.
Click Cancel to return to the profile summary page without saving any changes.
Click Save to save the configuration to the ZyWALL/USG but remain in the same
page. You may then go to the another profile screen (tab) in order to complete
the profile. Click OK in the final profile screen to complete the profile.
ZyWALL/USG Series User's Guide
332