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Introduction

The Network Scanner is a program, which based on Linux platform. It provides different features to scan ports of network computers. In addition, you also can use it on your browser to obtain your results.

Types of scan

ICMP scan

ICMP is the “Internet Control Message Protocol”. It can assist users to determine if a particular local or Internet connected device is reachable and/or responding.

SYN scan

In the environment of the TCP/IP, you should receive a TCP SYN-ACK packet if you send a TCP SYN packet to a computer which is listening on a port. On the other hand, when the port is closed, you may receive a TCP RST packet

SYN/ACK scan

In the environment of the TCP/IP, you may receive a TCP RST packet if you send a TCP SYN-ACK packet to a computer which is not listening on a port.

FIN scan

In the environment of the TCP/IP, you may receive a TCP RST packet if you send a TCP FIN packet to a computer which is not listening on a port.

#Language and libraries C++98
Standard Template Library (STL)
Realtime Extensions library (rt)
Pthread

#Operating System and Compiler Ubuntu 12.10 server 32-bit
gcc version 4.7.2
#Compile and installation ##How to compile. Please ensure your compiler is ready. Unpack the package, and enter “make” to compile. ##How to install. Type make install to install the programs and any data files and documentation. If you want to custom your installation, please modify the makefile kindly. #Setting file /etc/ntscan.conf ##port The option port allows you specify a port number which the Web server accepts incoming requests. ##keep_status The option keep_status allows you to specify the program which shows information on the screen or not. ##log_path The option log_path allows you to specify the location where the log file is stored. #How to start up Please enter “ntscan”
You will see below screen if the program has been started up.