![background image](http://html.mh-extra.com/html/cisco/5505-asa-firewall-edition-bundle/5505-asa-firewall-edition-bundle_cli-configuration-manual_186241441.webp)
1-13
Cisco ASA Series CLI Configuration Guide
Chapter 1 Configuring Threat Detection
Configuring Advanced Threat Detection Statistics
fw-drop
Shows the number of firewall drops. Firewall drops is a combined rate that
includes all firewall-related packet drops tracked in basic threat detection,
including access list denials, bad packets, exceeded connection limits, DoS
attack packets, suspicious ICMP packets, TCP SYN attack packets, and no
data UDP attack packets. It does not include non-firewall-related drops such
as interface overload, packets failed at application inspection, and scanning
attack detected.
insp-drop
Shows the number of packets dropped because they failed application
inspection.
null-ses
Shows the number of null sessions, which are TCP SYN sessions that did not
complete within the 3-second timeout, and UDP sessions that did not have any
data sent by its server 3 seconds after the session starts.
bad-acc
Shows the number of bad access attempts to host ports that are in a closed
state. When a port is determined to be in a null session (see the null-ses field
description), the port state of the host is set to HOST_PORT_CLOSE. Any
client accessing the port of the host is immediately classified as a bad access
without the need to wait for a timeout.
Average(eps)
Shows the average rate in events/sec over each time period.
The ASA stores the count at the end of each burst period, for a total of 30
completed burst intervals. The unfinished burst interval presently occurring is
not included in the average rate. For example, if the average rate interval is 20
minutes, then the burst interval is 20 seconds. If the last burst interval was
from 3:00:00 to 3:00:20, and you use the
show
command at 3:00:25, then the
last 5 seconds are not included in the output.
The only exception to this rule is if the number of events in the unfinished
burst interval already exceeds the number of events in the oldest burst interval
(#1 of 30) when calculating the total events. In that case, the ASA calculates
the total events as the last 29 complete intervals, plus the events so far in the
unfinished burst interval. This exception lets you monitor a large increase in
events in real time.
Current(eps)
Shows the current burst rate in events/sec over the last completed burst
interval, which is 1/30th of the average rate interval or 10 seconds, whichever
is larger. For the example specified in the Average(eps) description, the
current rate is the rate from 3:19:30 to 3:20:00
Trigger
Shows the number of times the dropped packet rate limits were exceeded. For
valid traffic identified in the sent and received bytes and packets rows, this
value is always 0, because there are no rate limits to trigger for valid traffic.
Total events
Shows the total number of events over each rate interval. The unfinished burst
interval presently occurring is not included in the total events. The only
exception to this rule is if the number of events in the unfinished burst interval
already exceeds the number of events in the oldest burst interval (#1 of 30)
when calculating the total events. In that case, the ASA calculates the total
events as the last 29 complete intervals, plus the events so far in the unfinished
burst interval. This exception lets you monitor a large increase in events in real
time.
Table 1-3
show threat-detection statistics host Command Fields (continued)
Field
Description
Summary of Contents for 5505 - ASA Firewall Edition Bundle
Page 28: ...Glossary GL 24 Cisco ASA Series CLI Configuration Guide ...
Page 61: ...P A R T 1 Getting Started with the ASA ...
Page 62: ......
Page 219: ...P A R T 2 Configuring High Availability and Scalability ...
Page 220: ......
Page 403: ...P A R T 2 Configuring Interfaces ...
Page 404: ......
Page 499: ...P A R T 2 Configuring Basic Settings ...
Page 500: ......
Page 533: ...P A R T 2 Configuring Objects and Access Lists ...
Page 534: ......
Page 601: ...P A R T 2 Configuring IP Routing ...
Page 602: ......
Page 745: ...P A R T 2 Configuring Network Address Translation ...
Page 746: ......
Page 845: ...P A R T 2 Configuring AAA Servers and the Local Database ...
Page 846: ......
Page 981: ...P A R T 2 Configuring Access Control ...
Page 982: ......
Page 1061: ...P A R T 2 Configuring Service Policies Using the Modular Policy Framework ...
Page 1062: ......
Page 1093: ...P A R T 2 Configuring Application Inspection ...
Page 1094: ......
Page 1191: ...P A R T 2 Configuring Unified Communications ...
Page 1192: ......
Page 1333: ...P A R T 2 Configuring Connection Settings and QoS ...
Page 1334: ......
Page 1379: ...P A R T 2 Configuring Advanced Network Protection ...
Page 1380: ......
Page 1475: ...P A R T 2 Configuring Modules ...
Page 1476: ......
Page 1549: ...P A R T 2 Configuring VPN ...
Page 1550: ......
Page 1965: ...P A R T 2 Configuring Logging SNMP and Smart Call Home ...
Page 1966: ......
Page 2059: ...P A R T 2 System Administration ...
Page 2060: ......
Page 2098: ...1 8 Cisco ASA Series CLI Configuration Guide Chapter 1 Troubleshooting Viewing the Coredump ...
Page 2099: ...P A R T 2 Reference ...
Page 2100: ......