UNIX for Dummies Questions & Answers

Hi,

I need to implement sftp between server 1 and server2.

I have already generated the public key using account user1 on server 1 and and sent it to the administrator of server2.

I have also finished updating the identification file at /home/user1/.ssh2

I have an account created user2 which I should use when connecting to server2. However, when I am using the following command to connect to server2, I get the messages below:

>ssh -v user2@server2
debug: Connecting to user2@server2, port 22... (SOCKS not used)
warning: Connecting to user2@server2 failed: No address associated to the name


Any clues what I should do from here, please.

Thanks

Hi.
If you want to connect from server1 (user1) to server2 (user2), you have to create the keys for user1 in server1 (ssh-keygen -t rsa/dsa), then get the public key and copy it to /home/user2/.ssh/authorized_keys
Set the appropiate perms for the files and check that both machies are resolving their IP/names.
By default, usually, sshd have cert auth activated so you should not have any problem.
Regards.

Thanks for your response Grial.

As you suggested
(i) get the public key and copy it to /home/user2/.ssh/authorized_keys was already done

(ii) Set the appropiate perms for the files - what should the perms be, please (700) ??

(iii) and check that both machies are resolving their IP/names.

I suppose that still don't work

OK, check that this key is in one line and exactly as in user1@server1
600 should be OK.
So "ping server2" from server1 should ping to server2 IP and "ping server1" from server2 should ping to serer1 IP, right?
Now, chek your server2:/etc/ssh/sshd_config and look for these lines:

Code:

RSAAuthentication yes
PubkeyAuthentication yes
AuthorizedKeysFile     %h/.ssh/authorized_keys

Good luck!

Hi ,

Managed to solve the problem. Actually the servername I am trying to connect had no entry in the /etc/hosts file.

Working fine now

Thanks again for your help.

Hi,

I am expeiencing the following problem with sftp. I am using this for the first time to get some files from server 1 to server2. The connection to the remote host is OK. But when I try to get a file, I get the following message:

Disconnected; protocol error (Protocol error: packet too long: 56548.).
Warning: child process (/usr/bin/ssh2) exited with code 66.

Any suggestions, please

Thanks

As the error says, seems to be aprotocol error. Check againd your servers' sshd_config, and look for this line:

Code:

Protocol 2,1

Then connect forcing the protocol with either:

Code:

ssh -1 ...

or

Code:

ssh -2 ...

Check wether both server and client are using the same protocol version, and that you have the needed certificates.

Regards.