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-   -   How to check for open Ports (http://www.go4expert.com/articles/check-ports-t12222/)

GreenGrass 18Jul2008 16:59

How to check for open Ports
 
Here i am going to show you an easy way to check for open ports on your system. This can simple be checked by typing "netstat -a" in command prompt. I will tell why how you can check your result.

Step 1:

Open up command prompt. Press "START" and "RUN" type "cmd" and use the command "netstat -a"
Now you will get up a list so showing you poeple so are connected to your computer. This list will look like this.

Proto: TCP
Local Address: thiscomputer3123:1031
Foreign Address: thiscomputerhaha342:ftp
State: ESTABLISHED

"Proto" showes what Protocol it is in this case it is (Transmission Control Protocol) TCP.
"Local Address" This is your computer also you see a number behind your computer name. 1031 this is the port so is used by your computer.
"Foreign Address" This is the Remote computer and the port is ftp. (File Transfer Protocol) so the port is 21 since the Default port to FTP is 21.
"State" This showes you if the computer is connected to you or not. ESTABLISHED means that it is connected to you.

So now you know how to read the result. Lets go to Step 2.

Step 2:

Ports:

0 - 1023 = This ports are used by "Services"
1024 - 49151 = This ports are used by "Network" ect Your Internet Browser and E-Mail clients.
49152 - 65535 = This ports are used by private users they are rarly used so this may indicate that you are infected with something.

Step 3:

You can easy check out the ports just with do a google search. Open up your "Internet Browser" type "www.google.com" in the address bar and type in ect "Port 1031" now it will give you sites about the "1031 port" or you may search for Trojan Horse port list or something like that to check out if the port is a Trojan Horse.

BSTU.UOK 19Jul2008 04:26

Re: How to check for open Ports
 
thx alot for giving such important information......

GreenGrass 19Jul2008 04:34

Re: How to check for open Ports
 
Thanks mate.. :)

faizulhaque 21Jul2008 21:03

Re: How to check for open Ports
 
Gr8 Work, would u also tell know i know that my victim port is on and which one is on.

means finding of ports of Vistim Sys.

Alt+Ctrl 22Jul2008 05:08

Re: How to check for open Ports
 
Trace open ports of victim's IP address

faizulhaque 22Jul2008 20:23

Re: How to check for open Ports
 
yes i want to trace the victom's system through ip or any others way.

evilone 29Jul2008 12:10

Re: How to check for open Ports
 
very good information....Thanks for sharing.....till now i dont know how to check this...

GreenGrass 29Jul2008 13:54

Re: How to check for open Ports
 
Thanks mate.. :)

Dopeman1992 12Aug2008 21:57

Re: How to check for open Ports
 
faizulhaque:

I think 'Nmap' would be an answer to your question. You can download it from insecure.org

faizulhaque 13Aug2008 13:40

Re: How to check for open Ports
 
Not Working if any firwall or Kaspersky IS is on..
Already Checked it.


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