Port Scanners Flashcards
What are the options of NMAP to control the timing of scanning speeds?
-T1 -T2 -T3 -T4 -T5
This NMAP Parameter will commence a XMAS scan on a device
-sX
This NMAP Parameter will export the scan results as an XML for external manipulation.
-oX
Nmap’s default scan with admin privledges
-Pn
-sT
-sS
sU
-sS
Nmap’s default scan with admin privledges
-Pn
-sT
-sS
sU
-sS
Nmaps default scan with without admin privledges
-Pn
-sT
-sS
sU
-sT
This NMAP Parameter will give more information on basic scans implemented
-v
____ - This port state is the result of an active port with an application that is actively accepting TCP connections.
Open
This NMAP Parameter will scan only the provided ports input
-p
____ Is the result when it cannot determine whether the port is active because packet sorting stops connections from reaching the port. It could be the result of a dedicated firewall device, router, router rules or host-based firewall software.
Filtered
Make an nmap scan for nonexist.org and Include more information:
nmap -v nonexist.org
What flags are sent in a christmas scan?
SYN,SYN/ACK,PSH,ACK
FIN,PSH,URG
FIN,PSH,URG,SYN,SYN/ACK
FIN,SYN,SYN/ACK,PSH
FIN,PSH,URG
This parameter with specified numbers will scan all ports
-p 0-65535
What tool utilizes the command “ping scan”.
nmap
What tool would utilize the command: nc -z -v site.com?
Netcat
Port Scanning does what?
checks IP addresses
determines number of hops between routes
determines fastest route to delivery packets
to check which ports are open
to check which ports are open
What tool is used to read and write data across network connections using TCP or UDP protocol?
NetCat/Cryptcat
Which of the following tasks can NOT be done using Nmap?
Quickly recognize devices on a single or multiple networks
Monitor large networks
Transfer files across the network
Detects security risks
Transfer files across the network
This NMAP parameter/option will assume every host in a network scan is online. Example: -sS
-Pn
This NMAP Parameter will enable you to import a list of ip addresses or networks to scan
-iL
Nmap scans how many ports by default if not specified?
500 ports
1000 ports
Top 1000 used ports
All well known ports
Top 1000 used ports
When implementing nmap on a network its capabilities can include identifying ports, servers and active hosts within the network scope. What type of reconissiance is nmap classified to implement on a network?
Recursive
Active
Passive
Port-scanner
Active
This NMAP parameter will enable OS detection
-O
____ The result of a port that is active but has no application listening on it.
Closed
Nmap has the capability to integrate scripts
TRUE
FALSE
TRUE
____ Is the result when nmap can connect to a port but is unable to verify ports as active or deactivated
Unfiltered
Create a nmap scan that will scan a 198.216.0.0/16 network for version information on services ssh,dns,pop3 and RDP
nmap -sV 198.216.0.0/16 -p 22,53,110,3367
This Parameter will control the timing of scanning and takes the longest time to assist in avoiding detection.
-T0
Nmap scans are a form of what type of reconnisance?
Active
True or False: Nmap utilizes a graphical user interface known as Zmap that develops visual nc -l – This command will instruct mappings of a network for better usability and reporting.
True
False
False: Zenmap
Which term correctly fills in the blank? ScanLine is a command-line port scanner for all ______ platforms.
ChromeOS
MacOS
Windows
Linux
Windows
Which tool is used for vulnerability scanning and network discovery?
Netcat
Cisco Packet Tracer
ZenMap
Nmap
Nmap
True or False: Netcat was designed to be a reliable front-end tool that can be used directly or easily driven by other programs and scripts.
True
False
False: Back-end
CryptCat uses what encryption method?
AES
TwoFish
DES
ThreeFish
TwoFish
True or False: In order to conduct port scanning you first need a list of what hosts are on the network along with the IP addresses.
True
False
True
Which of the following are advantages to port scanning? Select all that apply:
Finding open and vulnerable server locations
Checking security settings
Identifying hosts connected to the network and the services that are running on them
All of the above
All of the Above
This type of scanning is performed by sending an SYN packet and analyzing the response. What type of scan is this?
Syn Scan
TwoFish encryption utilizes _____ and one ____ key.
Symmetric encryption and uses one 128-bit key
Symmetric encryption and uses one 256-bit key
Asymmetric encryption and uses one 2048-bit key
None of the above
Symmetric encryption and uses one 256-bit key
Which of these is the simplest port scan?
TCP Half Open Port Scan
UDP
Ping Scan
None of the above
Ping Scan
True or False: While port scanning is an incredibly useful tool for malicious actors to use during reconnaissance, it is not nearly as useful for IT admin staff.
True
False
False: Useful for both actors
Which of these functions can be performed using ScanLine?
ICMP TimeStamp Scanning
TCP Scanning
UDP Scanning
All of the above
All of the above
This command will do what function? nc -l
This command will print a list of all of the available commands you can use in Netcat.
This will run a basic port scan of the specified website or server.
This command will instruct the local system to begin listening for TCP connections and UDP activity on a specific port number.
None of the above
This command will instruct the local system to begin listening for TCP connections and UDP activity on a specific port number.
True or False: A number of TCP protocol techniques actually make it possible for attackers to conceal their network location and use “decoy traffic” to perform port scans without revealing any network address to the target.
True
False
True
Fill in the blank: Ports 0 to _____ are well known port numbers that are designed for Internet use although they can have specialized purposes as well.
1023
65,536
1064
783
1023
Fill in the blank: Ports range from 0 to ______and basically rank by popularity.
1023
65,536
1064
783
65,536
The range of ports mentioned in question 22 are administered by what organization?
National Security Agency
Defense Information Systems Agency
Cybersecurity and Infrastructure Security Agency
Internet Assigned Numbers Authority
Internet Assigned Numbers Authority
2
Fill in the Blank: What are the general protocols used for port scanning?
TCP, ICMP
UDP, FTTP
TCP, SMTP
None of the Above
None of the Above: They are TCP and UDP
