I had a puttygen key set up and working on my laptop for a linux server, i got the laptop set up a lot better and the key still worked, i then updated linux server and did a scan on the laptop where i found a lot of not wants, lol. i then went to use putty again and got this ..
var/log/ufw.log Jan 5 13:00:15 li560-197 kernel: [UFW BLOCK] IN=eth0 OUT= MAC=f2:3c:91:ae:7e:ef:88:43:e1:a3:fa:7f:0
Everytime i try to login using putty i get this all over the log files and cant understand why, at first i thought the laptop firewall, so i disabled it along with the ufw firewall on the linux server, and still i get this log. Anyone got ideas?
hmm after many hours trolling i found i get an sshd which means both files are not matching, or both keys, i thought this might be down to vipre antivirus on the laptop, it removed all sorts of crap. And good stuff to it seems, try new keys tmr.