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GCIH · Question #744

The following event snippet was recorded by which type of logging device? 1660582288.951 185 192.168.42.109 TCP_MISS/208 1856

The correct answer is A. Web proxy. The log entry follows the Squid proxy log format, which includes a timestamp, elapsed time, client IP, result code, bytes transferred, and request method.

Incident Response & Cyber Kill Chain

Question

The following event snippet was recorded by which type of logging device? 1660582288.951 185 192.168.42.109 TCP_MISS/208 1856

Options

  • AWeb proxy
  • BEndpoint detection
  • CNetwork flow
  • DStateful firewall

How the community answered

(27 responses)
  • A
    93% (25)
  • B
    4% (1)
  • D
    4% (1)

Why each option

The log entry follows the Squid proxy log format, which includes a timestamp, elapsed time, client IP, result code, bytes transferred, and request method.

AWeb proxyCorrect

The format matches a Squid web proxy access log. The fields are: Unix timestamp (1660582288.951), elapsed milliseconds (185), client IP (192.168.42.109), result/status code (TCP_MISS/208), and bytes (1856). TCP_MISS is a Squid-specific cache result code indicating the request was not served from cache, which is unique to web proxy logging.

BEndpoint detection

Endpoint detection logs typically include process names, file paths, registry keys, and user context - not TCP cache result codes or byte counts in this format.

CNetwork flow

Network flow records (NetFlow/IPFIX) capture src/dst IP, src/dst port, protocol, and byte counts in a structured flow record format, not proxy cache result codes like TCP_MISS.

DStateful firewall

Stateful firewall logs record allow/deny actions with src/dst IP, port, protocol, and interface - they do not produce TCP_MISS cache result codes or elapsed time fields.

Concept tested: Squid web proxy log format identification

Source: https://wiki.squid-cache.org/SquidFaq/SquidLogs

Topics

#web proxy logs#log analysis#TCP_MISS#Squid proxy

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