William is examining a log entry that reads 192.168.0.1 - - [18/Jan/2020:12:42:29 +0000] "GET / HTTP/1.1" 200 1861. Which of the following logs does the log entry belong to?
ANSWER: A
The format matches the Common Log Format (CLF) of Apache’s access log used for HTTP requests.
Comparison of similar Apache and IIS log entries:
✅ Apache Log: (Common Log Format)
Look for the Brackets and Quoted Request
EXAMPLE:
192.168.0.1 - - [18/Jan/2020:12:42:29 +0000] "GET / HTTP/1.1" 200 1861
✅ IIS Log: IIS Log (W3C Extended Log Format)
Look for ISO Date Format and No Quotes
EXAMPLE:
2020-01-18 12:42:29 GET / - 80 192.168.0.1 Mozilla/5.0 200 0 0 15
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Expanded IIS log entry explanation---
IS logs follow a field-based tab-delimited format.
Header (fields specified at the top of the log): #Fields: date time cs-method cs-uri-stem cs-uri-query s-port c-ip cs(User-Agent) sc-status sc-substatus sc-win32-status time-taken
2020-01-18 12:42:29 GET / - 80 192.168.0.1 Mozilla/5.0 200 0 0 15
Meaning:
2020-01-18 → Date
12:42:29 → Time
GET → HTTP method
/ → Requested URI
- → No query string
80 → Server port
192.168.0.1 → Client IP
Mozilla/5.0 → User-Agent string
200 → HTTP status
0 0 → Substatus, Win32 status
15 → Time taken (ms)
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