Timing and Performance

Question 1

Paranoid (0) Intrusion Detection

System evasion

Answer 1

-T0

nmap 192.168.1.1 -T0

Question 2

Sneaky (1) Intrusion Detection System

evasion

Answer 2

-T1

nmap 192.168.1.1 -T1

Question 3

Polite (2) slows down the scan to use
less bandwidth and use less target
machine resources

Answer 3

-T2

nmap 192.168.1.1 -T2

Question 4

Normal (3) which is default speed

Answer 4

-T3

nmap 192.168.1.1 -T3

Question 5

Aggressive (4) speeds scans; assumes
you are on a reasonably fast and
reliable network

Answer 5

-T4

nmap 192.168.1.1 -T4

Question 6

Insane (5) speeds scan; assumes you

are on an extraordinarily fast network

Answer 6

-T5

nmap 192.168.1.1 -T5

Question 7

Give up on target after this long

Answer 7

–host-timeout

1s; 4m; 2h

Question 8

–min-rtt-timeout/max-rtt-timeout/initial-rtt-timeout

1s; 4m; 2h

Answer 8

Specifies probe round trip time

Question 9

Parallel host scan group

sizes

Answer 9

–min-hostgroup/max-hostgroup

50; 1024

Question 10

Probe parallelization

Answer 10

–min-parallelism/max-parallelism

10; 1

Question 11

Adjust delay between probes

Answer 11

–scan-delay/–max-scan-delay

20ms; 2s; 4m; 5h

Question 12

Specify the maximum number

of port scan probe retransmissions

Answer 12

–max-retries

3

Question 13

Send packets no slower than per second

Answer 13

–min-rate

100

Question 14

Send packets no faster than per second

Answer 14

–max-rate

100