What are the open ports on my machine? ShowWhat are the open ports on my machine?
Everyone should be concerned about the security of their computer when connected to the Internet and it is therefore necessary, to activate the firewall of your ADSL router or installing one on your...
List of open ports in command line ShowList of open ports in command line
Whether you're running Windows or Linux / Unix, the following command in (console) will display the list of open ports on your computer:
netstat -a
For the use of advanced graphics tools, see What...
[Avg free] update failed Show[Avg free] update failed
First Solution
Second solution
When you want to update your antivirus AVG Free, it displays the following message:
update failed, the connection with update server has failed
First Solution
Open AVG...
Installing a SSH server on Ubuntu ShowInstalling a SSH server on Ubuntu
Installation
Connection
An ssh server allows you to remotely access your machine.
You'll have access to the remote console (equivalent to telnet, but secure) and the transfer of files (equivalent...
[Myth] No open port = no Trojan ShowNo open port means No trojan
Myth
Reality
Explanations
Myth
Leaving no ports open on my PC , I'm sure I will not have any Trojan on my computer.
Reality
FALSE.
Explanations
An open port is not necessary to control a computer on...
Port/Ports TCP/IP ShowThe use of ports
Many TCP/IP programs
can be executed simultaneously over the Internet (you can for example open several browsers simultaneously or browse HTML pages while downloading a file via FTP). Each of these programs works with a protocol,...
FTP protocol (File Transfer Protocol) ShowIntroduction to FTP protocol
FTP protocol (File Transfer Protocol) is, as its name indicates a protocol for transferring files.
The implementation of FTP dates from 1971 when a file transfer system (described in RFC141) between MIT machines...
Denial of service attack ShowIntroduction to denial-of-service attacks
A "denial-of-service attack" (abbreviated DoS) is a type of attack that aims to make an organization's services or resources unavailable for an indefinite amount of time. Most of the time, these attacks are...