Which FTP transfer mode is required for FTP bounce attack?

You want to scan the live machine on the LAN, what type of scan you should use?

Jenny a well known hacker scanning to remote host of 204.4.4.4 using nmap. She got the scanned output but she saw that 25 port states is filtered. What is the meaning of filtered port State?

Your are trying the scan a machine located at ABC company’s LAN named mail.abc.com. Actually that machine located behind the firewall. Which port is used by nmap to send the TCP synchronize frame to on mail.abc.com?

What are the four steps is used by nmap scanning?

While doing fast scan using F option, which file is used to list the range of ports to scan by nmap?

Which Type of scan sends a packets with no flags set ?

Select the Answer

Steve scans the network for SNMP enabled devices. Which port number Steve should scan?

Why would an attacker want to perform a scan on port 137?

You have initiated an active operating system fingerprinting attempt with nmap against a target system:

[root@ceh NG]# /usr/local/bin/nmap -sT -O 10.0.0.1

Starting nmap 3.28 ( www.insecure.org/nmap/) at 2003-06-18 19:14 IDT

Interesting ports on 10.0.0.1:

(The 1628 ports scanned but not shown below are in state: closed)

Port State Service

21/tcp filtered ftp

22/tcp filtered ssh

25/tcp open smtp

80/tcp open http

135/tcp open loc-srv

139/tcp open netbios-ssn

389/tcp open LDAP

443/tcp open https

465/tcp open smtps

1029/tcp open ms-lsa

1433/tcp open ms-sql-s

2301/tcp open compaqdiag

5555/tcp open freeciv

5800/tcp open vnc-http

5900/tcp open vnc

6000/tcp filtered X11

Remote operating system guess: Windows XP, Windows 2000, NT4 or 95/98/98SE Nmap run completed — 1 IP address (1 host up) scanned in 3.334 seconds

Using its fingerprinting tests nmap is unable to distinguish between different groups of Microsoft based operating systems – Windows XP, Windows 2000, NT4 or 95/98/98SE.

What operating system is the target host running based on the open ports shown above?