During the reconnaissance phase, a penetration tester obtains the following output: Reply from 192.168.1.23: bytes=32 time<54ms TTL=128 Reply from 192.168.1.23: bytes=32 time<53ms TTL=128 Reply from…

The correct answer is C. Windows. The output shows the result of a ping command, which sends packets to a host and receives replies. The ping command can be used to determine if a host is alive and reachable on the network. One of the information that the ping command displays is the Time to Live (TTL) value…

Reconnaissance and enumeration

Question

During the reconnaissance phase, a penetration tester obtains the following output:

Reply from 192.168.1.23: bytes=32 time<54ms TTL=128 Reply from 192.168.1.23: bytes=32 time<53ms TTL=128 Reply from 192.168.1.23: bytes=32 time<60ms TTL=128 Reply from 192.168.1.23: bytes=32 time<51ms TTL=128 Which of the following operating systems is MOST likely installed on the host?

Options

ALinux
BNetBSD
CWindows
DmacOS

How the community answered

(40 responses)

A
13% (5)
B
5% (2)
C
80% (32)
D
3% (1)

Explanation

The output shows the result of a ping command, which sends packets to a host and receives replies. The ping command can be used to determine if a host is alive and reachable on the network. One of the information that the ping command displays is the Time to Live (TTL) value, which indicates how many hops a packet can travel before it is discarded. The TTL value can also be used to guess the operating system of the host, as different operating systems have different default TTL values. In this case, the TTL value is 128, which is the default value for Windows operating systems. Linux and macOS have a default TTL value of 64, while NetBSD has a default TTL value of 255.

Topics

#OS Fingerprinting#Reconnaissance#TTL#ICMP

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