UNIX for Dummies Questions & Answers

Can someone please tell me how to ssh into a computer when I have a username and password? Like something like:

ssh username : pass @ server

Can I do something like that directly?

try

ssh user@host

asks pswd ...provide it

No. You must enter the password or set up publickey authentication.

Thanks... That was what I wanted to know...

If for some reason you are unable/unauthorized to setup ssh keys, you can use an expect script, or a perl script to do that. There are security concerns with putting a password in a plaintext file obviously, but its doable.

This should be a start on how to set up passwordless-ssh between host1 to host2 and host2 to host1

Step 1:
From host 1 ==>

Code:

ssh-keygen -t rsa1

Press enter without any passwords for the ' passphrase ' ssh-keygen asks for.


Step 2:
copy the public key identity.pub from ~/.ssh/identity.pub to host 2 where passwordless ssh should be enabled

Code:

scp ~/.ssh/identity.pub <complete_host_name>:

Step 3:
In host 2, copy the public keys as .ssh/authorized_keys

Code:

cat ~/identity.pub >> ~/.ssh/authorized_keys

Now you should be able to do passwordless login from host 1 to host 2
If you want to enable the same from host 2 to host 1,
generate keys from host 2 and copy the public keys alone to host 1 as authorized keys.

Make sure maximum perm bits set to ~/.ssh directory is only 700

And make "identity" and "authorized_keys" -rw-------