IIS


Internet Information Services (IIS) is a flexible, general-purpose web server from Microsoft that runs on Windows systems to serve requested HTML pages or files.

This guide has been written for integration with 32 bit and 64 bit Windows machines.

Integration of IIS Webserver logs via Nxlog with DNIF Adapter.

To configure NXLog to send IIS Webserver access logs to DNIF Adapter.

If you want to integrate IIS Webserver access logs as well as Windows event logs, please refer our help guide: Integrating Windows Event Logs.

Download and install nxlog

Download and install the latest version of NXLog (Download Link) on the Windows machine from which the logs need to be collected.

After installation, find the nxlog.conf file in the C:\Program Files (x86)\nxlog\conf folder. In 32 bit Windows machines, look in the C:\Program Files\nxlog\conf folder

nxlog.conf file location

Open the nxlog.conf file using a text editor. Replace the entire configuration by copy-pasting the text given for your Windows version.

Windows 2008 x32 bit OS
#============ Define ROOT here ===================
define ROOT C:\Program Files\nxlog
#define ROOT C:\Program Files (x86)\nxlog
#============ NXLog Machine Log info =============
Moduledir %ROOT%\modules
CacheDir %ROOT%\data
Pidfile %ROOT%\data\nxlog.pid
SpoolDir %ROOT%\data
LogFile %ROOT%\data\nxlog.log

#=========== For IIS - default logs =============
# For Following field sequence (ie : default)
# Fields: date time s-sitename s-computername s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs-version cs(User-Agent) cs(Cookie) cs(Referer) cs-host sc-status sc-substatus sc-win32-status sc-bytes cs-bytes time-taken

<Extension w3c>
Module xm_csv
Fields $date, $time, $SiteName, $SystemName, $DstIP, $HTTPMethod, $BaseURL, $URIQuery, $DstPort, $UserName, $SourceIP, $Cs-version, $UserAgent, $CS-Cookie, $HTTPReferer, $SourceHost, $HTTPRetCode, $Substatus, $Win32Status, $RXLen, $TXLen, $Time-Taken
FieldTypes string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string, string
Delimiter ' '
QuoteChar '"'
EscapeControl FALSE
UndefValue -
</Extension>

<Input IISin>
Module im_file
File 'C:\WINDOWS\system32\LogFiles\W3SVC1\ex*'  ##path of log file
ReadFromLast TRUE
Exec if $raw_event =~ /^#/ drop(); \
else \
{\
w3c->parse_csv(); \
$EventTime = parsedate($date + " " + $time); \
}
</Input>

<Output IISout>
Module om_udp
Exec $raw_event = to_json();
Host DNIF-Adapter-IP
Port 514
</Output>

<Route 1>
Path IISin => IISout
</Route>
Windows 2008 x64 bit OS
#============ Define ROOT here ===================
#define ROOT C:\Program Files\nxlog
define ROOT C:\Program Files (x86)\nxlog
#============ NXLog Machine Log info =============
Moduledir %ROOT%\modules
CacheDir %ROOT%\data
Pidfile %ROOT%\data\nxlog.pid
SpoolDir %ROOT%\data
LogFile %ROOT%\data\nxlog.log

#=========== For IIS - default logs ==============
# For Following field sequence (ie : default)
# Fields: date time s-ip cs-method cs-uri-stem cs-uri-query s-port cs-username c-ip cs(User-Agent) cs-referer sc-status sc-substatus sc-win32-status sc-time-taken

<Extension json>
Module xm_json
</Extension>

<Extension w3c>
Module xm_csv
Fields $date, $time, $SourceIP, $HTTPMethod, $URIStem, $URIQuery, $SourcePort, $UserName, $DstIP, $UserAgent, $Referer, $Status, $Substatus, $Win32Status, $time-taken
FieldTypes string, string, string, string, string, string, string, string, string, string, string, string, string, string, string
Delimiter ' '
QuoteChar '"'
EscapeControl FALSE
UndefValue -
</Extension>

<Input IISin>
Module im_file
File 'C:\WINDOWS\system32\LogFiles\W3SVC1\ex*'  ##path of log file
ReadFromLast TRUE
Exec if $raw_event =~ /^#/ drop(); \
else \
{\
w3c->parse_csv(); \
$EventTime = parsedate($date + " " + $time); \
}
</Input>

<Output IISout>
Module om_udp
Exec $raw_event = to_json();
Host DNIF-Adapter-IP
Port 514
</Output>

<Route 1>
Path IISin => IISout
</Route>

Restart NXLog Service

To apply changes made on nxlog.conf, you have to restart the service again. Go to Control Panel > Services and locate the nxlog service.

Right click on nxlog and restart

nxlog service restart

IIS Webserver access logs are now being streamed to the DNIF-ADAPTER.