Cisco Cisco Web Security Appliance S690 User Guide

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Cisco IronPort AsyncOS 7.7 for Web User Guide
Chapter 21      L4 Traffic Monitor
Viewing L4 Traffic Monitor Activity
Valid Formats
When you add addresses to the Allow List or Additional Suspected Malware Addresses properties, 
separate multiple entries with whitespace or commas. You can enter addresses in any of the following 
formats:
  •
IP address. For example, 10.1.1.0.
  •
CIDR address. For example, 10.1.1.0/24.
  •
Domain name. For example, example.com. Entering a domain name such as example.com will also 
match www.example.com and hostname.example.com.
  •
Hostname. For example, crm.example.com.
Viewing L4 Traffic Monitor Activity
The S-Series appliance supports several options for generating feature specific reports and interactive 
displays of summary statistics. 
Monitoring Activity and Viewing Summary Statistics
The Reporting > L4 Traffic Monitor page provides statistical summaries of monitoring activity. You can 
interactively update these displays by specifying a time range of hour, day, week or month. Additionally, 
you have the option to print these display pages and export the raw data to a file.
You can use the following displays and reporting tools to view the results of L4 Traffic Monitor activity:
Note
If the Web Proxy is configured as a forward proxy and L4 Traffic Monitor is set to monitor all ports, the 
IP address of the proxy’s data port is recorded and displayed as a client IP address in the client activity 
report on the Reporting > Client Activity page. If the Web Proxy is configured as a transparent proxy, 
enable IP spoofing to correctly record and display the client IP addresses.
L4 Traffic Monitor Log File Entries
The L4 Traffic Monitor log file provides a detailed record of monitoring activity. For more information 
about the L4 Traffic Monitor log, see 
.
Table 21-2
L4 Traffic Monitor Scanning Data
To view...
See...
Client statistics
Reporting > Client Activity 
Malware statistics
Port statistics
Reporting > L4 Traffic Monitor
L4 Traffic Monitor log files
System Administration > Log Subscriptions
  •
trafmon_errlogs
  •
trafmonlogs