Shell Programming and Scripting

1. I have create telnet.txt file by using nmap scan. File contain IP address with open port.
e.g
telnet.txt

Code:

ip          open port  
192.168.0.1          21
192.168.0.1          21
192.168.0.101       25

2. Telnet to these IP with open ports from telnet.txt file. If telnet confirmed that port is open then it should display new terminal with blank screen for open port. Take screenshot of every blank screen (that means open port) and save it automatically with name: ip address_port. e.g 192.168.0.1_21

I have attached screenshot of open port. I want screenshot of open ports like this

The description of what you want is straightforward enough, but i question the "legitimity" of the approach.

You create the list with open(able) sockets (an IP-port combination is actually called that) - so far, so good. I just don't understand, what you want with the telnet client in this scenario? I used telnet for a similar purpose regularly (i.e. to test for a certain printer operating by trying to telnet to port 515), but that was only in absence of some specialized tools - like nmap, which you used to create the list in first place. What exactly should be the gain in using telnet after you have already used nmap to establish a certain fact (the openable port)?

And what is this "screenshot" for? Wouldn't some kind of list output:

Code:

IP-1    port-1    OK
IP-2    port-2    NOT_OK
IP-3    port-3    OK
...

(for whatever "OK" would mean) be better than a long list of pictures (showing nothing, btw.)?

I hope this helps.

bakunin

In many case nmap gives wrong output. It shows open ports but while doing telnet to specific port it becomes close. To more accuracy i am doing telnet.
For evidence, I want screenshot of blank screen which is already attached above.
so if possible please help me to correct above code.