Answer:
1. Nmap.
2. Fping.
3. Hping.
4. Nessus.
5. Closed port.
6. OpenVAS.
7. Filtered port.
8. Open port.
9. Port scanning.
10. Ping sweep.
Explanation:
An IP address is an acronym for internet protocol address and it can be defined as a unique number assigned to a computer or other network devices, so as to differentiate each device from one another in an active network system. Thus, an IP address is typically used to uniquely identify each computer or network devices connected to the internet or network.
In Computer networking, IP address are classified into two (2) main categories and these are;
1. Local (internal) IP address.
2. Global (external) IP address.
Also, the internet protocol (IP) address comprises of two (2) versions and these are;
I. Internet protocol version 4 (IPv4): this is the first and original version of the internet protocol which was introduced in 1983 using the Advanced Research Projects Agency Network (ARPANET). An example of an IPv4 address is 192.168.1.0.
II. Internet protocol version 6 (IPv6): it is the modified (latest) version of the IPv4 address system and as such can accommodate more addresses or nodes. An example of an IPv6 is 2001:db8:1234:1:0:567:8:1.
ICMP is an acronym for Internet Control Message Protocol and it is a standard protocol for communicating network errors in the form of messages such as Time exceeded and Destination unreachable.
In Computer Networking, an echo reply and echo request are implemented with a command utility referred to as ping. When a user sends an echo request message with the ping program, a successful attempt will return an echo reply message.
1. Nmap: a popular port scanners that has the ability to use a graphical user interface (GUI) front end.
2. Fping: allows you to ping multiple internet protocol (IP) addresses simultaneously and is usually included in Kali Linux.
3. Hping: tool for performing ping sweeps and used to bypass filtering devices by injecting crafted or otherwise modified IP-packets.
4. Nessus: the original utility from which OpenVas was developed.
5. Closed port: a port state which does not allow entry or access to a service.
6. OpenVAS: an open-source fork of Nessus.
7. Filtered port: a port state that may indicate a firewall is being used to allow specified traffic into or out of the network.
8. Open port: a port state that allows access to applications and can be vulnerable.
9. Port scanning: allows you the ability to scan thousands or even tens of thousands of internet protocol (IP) addresses quickly.
10. Ping sweep: performed by port scanners to scan large networks to identify which internet protocol (IP) addresses belong to active hosts.
