Take the 2-minute tour ×  Whenever I get a new laptop, I copy
the public and private ssh keys from the older one. But since I
sometimes hold on to the old laptops, I'll be logging into
servers and such using the same dsa keypair from up to 3
different computers. Is there any harm in doing this? Or is it
better to have a distinct public and private keys for each
computer you own?  share|improve this question  migrated from
stackoverflow.com Jan 30 '10 at 17:40  This question came from
our site for professional and enthusiast programmers.  3 Answers
3  Your key identifies YOU, so it's semantically correct, to use
the same key everywhere. However, using the same key on 3
different computer makes 3 times bigger the chance to the key
get stolen.  share|improve this answer Agreed. If you want to
help your security, make sure to use a passphrase, and leverage
ssh-agent on your behalf. –  Matt Simmons Jan 30 '10 at 21:24  I
typically create an ssh key for each machine I connect from.
That key has a useful comment so