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Special Forums Cybersecurity Best, secure way to ssh without needed password? Post 302799379 by Corona688 on Friday 26th of April 2013 11:46:56 AM
Old 04-26-2013
Quote:
Originally Posted by springs2
I have a remote server that hosts a forum what i want to finish configuring my monitoring via Nagios. now because my home network uses a Dynamic IP nagios fails to work once the IP changes.
I think you can solve that without resorting to password injection.

Check the IP address of the server with a utility like ping or nslookup before you login, then add it to your known_hosts. Perhaps remove the old ones while you're at it so known_hosts doesn't grow endlessly.

Quote:
what is the best secure way for my monitoring server to ssh to the remote server without using passwordless keys?
There is no good, safe, secure way to inject plaintext passwords into ssh or anything else; this is why the keys mechanism was invented...

Last edited by Corona688; 04-26-2013 at 12:58 PM..
 

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SSH-COPY-ID(1)						    BSD General Commands Manual 					    SSH-COPY-ID(1)

NAME
ssh-copy-id -- copy public keys to a remote host SYNOPSIS
ssh-copy-id [-lv] [-i keyfile] [-o option] [-p port] [user@]hostname DESCRIPTION
The ssh-copy-id utility copies public keys to a remote host's ~/.ssh/authorized_keys file (creating the file and directory, if required). The following options are available: -i file Copy the public key contained in file. This option can be specified multiple times and can be combined with the -l option. If a private key is specified and a public key is found then the public key will be used. -l Copy the keys currently held by ssh-agent(1). This is the default if the -i option was not specified. -o ssh-option Pass this option directly to ssh(1). This option can be specified multiple times. -p port Connect to the specified port on the remote host instead of the default. -v Pass -v to ssh(1). The remaining arguments are a list of remote hosts to connect to, each one optionally qualified by a user name. EXIT STATUS
The ssh-copy-id utility exits 0 on success, and >0 if an error occurs. EXAMPLES
To send a specific key to multiple hosts: $ ssh-copy-id -i /path/to/keyfile.pub user@host1 user@host2 user@host3 HISTORY
The ssh-copy-id utility was written by Eitan Adler <eadler@FreeBSD.org> as a drop-in replacement for an existing utility included with OpenSSH. BSD
February 28, 2014 BSD
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