can't connect to NS2 via PuTTY

In this thread
http://forum.nas-central.org/viewtopic.php?f=236&t=7727
fvdw responds to OP belya's request for help in creating a disk image of his NS2's HDD, as a prelude to swapping it out for a bigger disk.
Though I don't plan to swap mine out, I do need to create a disk image of it (as a precautionary measure), and I have no greater familiarity with Linux than belya.
I'm running Windows8, and I've installed PuTTY and activated Telnet. I'm able to ping the NS2, but when - having opened PuTTY and entered the NS2's IP address (the one successfully pinged), and selected Telnet - I click on 'Open', I get this error-message (repeatedly):-
'Network error: connection refused'
- and PuTTY shuts itself down after I click on 'OK'
I checked my firewall settings and failed to find port 22. So I tried substituting one of the ports shown as open - it made no difference at all. I've now spent a lot of time googling and reading a number of threads on all sorts of forums. And got nowhere.
Can anyone please suggest what I might do?
http://forum.nas-central.org/viewtopic.php?f=236&t=7727
fvdw responds to OP belya's request for help in creating a disk image of his NS2's HDD, as a prelude to swapping it out for a bigger disk.
Though I don't plan to swap mine out, I do need to create a disk image of it (as a precautionary measure), and I have no greater familiarity with Linux than belya.
I'm running Windows8, and I've installed PuTTY and activated Telnet. I'm able to ping the NS2, but when - having opened PuTTY and entered the NS2's IP address (the one successfully pinged), and selected Telnet - I click on 'Open', I get this error-message (repeatedly):-
'Network error: connection refused'
- and PuTTY shuts itself down after I click on 'OK'
I checked my firewall settings and failed to find port 22. So I tried substituting one of the ports shown as open - it made no difference at all. I've now spent a lot of time googling and reading a number of threads on all sorts of forums. And got nowhere.
Can anyone please suggest what I might do?