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Chapter 24      Logging
Custom Formatting in Access Logs and W3C Logs
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Cisco IronPort AsyncOS 7.0 for Web User Guide
OL-23079-01
cs-version
%P
Protocol, including the version number when 
applicable
date
%v
Date in YYYY-MM-DD
DCF
%j
Do not cache response code; DCF flags
s-computerName
%N
Server name or destination hostname. This 
field is written with double-quotes in the 
access logs.
s-hierarchy
%H
Hierarchy retrieval
s-hostname
%d
Data source or server IP address
s-ip
%k
Data source IP address (server IP address)
s-port
%p
Destination port number
sc(Server)
%>Server:
Server header in the response
sc-body-size
%b
Bytes sent to the client from the Web Proxy 
for the body content.
sc-bytes
%s
Response size (header + body)
sc-http-status
%h
HTTP response code
sc-result-code
%w
Result code 
For example: TCP_MISS, TCP_HIT
sc-result-code-denial
%W
Result code denial
time
%V
Time in HH:MM:SS
timestamp
%t
Timestamp in UNIX epoch
Note: If you want to use a third party log 
analyzer tool to read and parse the W3C 
access logs, you might need to include the 
“timestamp” field. Most log analyzers only 
understand time in the format provided by 
this field. 
Table 24-11
Log Fields in W3C Logs and Format Specifiers in Access Logs 
W3C Log Field
Format Specifier in 
Access Logs
Description