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Version detection – Interrogating network services on remote devices to determine application name and version number. [11] Ping Scan – Check host by sending ping requests. TCP/IP stack fingerprinting – Determining the operating system and hardware characteristics of network devices based on observations of network activity of said devices.
This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic. TCP usually uses port numbers that match the services of the corresponding UDP implementations, if they exist, and vice versa.
A list of TCP/OS Fingerprinting Tools Zardaxt.py [8] – Passive open-source TCP/IP Fingerprinting Tool. Ettercap – passive TCP/IP stack fingerprinting. Nmap – comprehensive active stack fingerprinting. p0f – comprehensive passive TCP/IP stack fingerprinting. NetSleuth – free passive fingerprinting and analysis tool
Performing a port scan and OS identification (-O option in nmap) on the zombie candidate network rather than just a ping scan helps in selecting a good zombie. As long as verbose mode (-v) is enabled, OS detection will usually determine the IP ID sequence generation method and print a line such as “IP ID Sequence Generation: Incremental”.
ZMap is a free and open-source security scanner that was developed as a faster alternative to Nmap. ZMap was designed for information security research and can be used for both white hat and black hat purposes. The tool is able to discover vulnerabilities and their impact, and detect affected IoT devices.
Network Security Toolkit (NST) is a Linux-based Live DVD/USB Flash Drive that provides a set of free and open-source computer security and networking tools to perform routine security and networking diagnostic and monitoring tasks.
For example, a service scanner may be configured to only search for Microsoft SQL Servers on TCP ports from 1 to 50,000 on all of the devices in an enterprise private network. If the service scanner only finds the MSSQL service running on known and authorized servers at TCP/1433 (the assigned port) then they can be reasonably sure that there ...
Network enumeration is the discovery of hosts or devices on a network. Network enumeration tends to use overt discovery protocols such as ICMP and SNMP to gather information. It may also scan various ports on remote hosts for looking for well known services in an attempt to further identify the function of a remote host.