Top "Port-scanning" questions

The act of scanning the ports on a remote computer in a systematic fashion.

How to check Network port access and display useful message?

I was trying to check whether the port is opened or not using powershell like follows. (new-object Net.Sockets.TcpClient).…

powershell port powershell-2.0 port-scanning
How to retrieve both TCP and UDP ports with Nmap?

I need to retrieve both TCP and UDP ports in the same scan with Nmap in the fastest way possible. …

tcp udp nmap port-scanning
Fastest way to scan ports with Java

I made a very simple port scanner, but it runs too slow, so I'm looking for a way to make …

java sockets ip port-scanning
Making a Fast Port Scanner

So I'm making a port scanner in python... import socket ip = "External IP" s = socket.socket(2, 1) #socket.AF_INET, socket.…

python sockets port port-scanning
nmap warning: giving up on port because retransmission cap hit (2)

I am trying to scan a large set of domain names using nmap. I used the following command: Nmap -PN …

networking nmap port-scanning domain-mapping
Nmap IP range specification

I need to specify specific IP range for Nmap scan, for example: 192.168.1.140 - 192.168.3.255 If I do it like: 192.168.1-3.140-255 …

range ip-address nmap port-scanning
Port Scanning: how to make scanning faster?

I'm creating a small tool which let me to check status of ports of given IP and port number like …

c# winforms tcpclient port-scanning
PHP Port Scanning

This may be a duplicate post, BUT I've not seen any answer that correctly resolves this. I'm trying to find …

php port port-scanning
Implementing all portscanning techniques in C# / Creating raw low level packets in C#

I am trying to write a port scanner in C#. I did some research on port scanning methods. If you …

c# .net sockets network-programming port-scanning
how to find which app is listening on port Android

I'm trying to write a port scanner, I managed to get the open ports using sockets. My problem is how …

android port-scanning