ProxyCommand with different keys

10-11-2011

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ProxyCommand with different keys

Hello all,

simple network problem:

host1 -> jumphost -> host2

alias ss='ssh -t -q user2@jumphost -q -t -t ssh -l user2 '

ss host2 works like a charm but scp and scripts don't cooperate very much (normal).

My ssh key (user1) is already deployed on jumphost but NOT on host2 as i'm using the user2's key. I could probably deploy my key (user1) on the host2 but i would prefer not atm (i have ALOT of servers and don't wanna have to deploy on each server individually). User2's key is already deployed accross the park.

But thats probably the reason why my proxycommand fails...

Code:

Host jumphost
    User user2
    HostName jumphost
    ProxyCommand none
    IdentityFile ~/.ssh/id_dsa

Host host2
    User    user2
    HostName host2
    #ProxyCommand ssh -l user2 -W host2:22 jumphost 
    ProxyCommand ssh jumphost nc %r %h 22

Of course ssh jumphost works without any issues.

Thanks

maverick72

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SCP(1) BSD General Commands Manual SCP(1) NAME
scp -- secure copy (remote file copy program) SYNOPSIS
scp [-346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file] [-l limit] [-o ssh_option] [-P port] [-S program] [[user@]host1:]file1 ... [[user@]host2:]file2 DESCRIPTION
scp copies files between hosts on a network. It uses ssh(1) for data transfer, and uses the same authentication and provides the same secu- rity as ssh(1). scp will ask for passwords or passphrases if they are needed for authentication. File names may contain a user and host specification to indicate that the file is to be copied to/from that host. Local file names can be made explicit using absolute or relative pathnames to avoid scp treating file names containing ':' as host specifiers. Copies between two remote hosts are also permitted. The options are as follows: -3 Copies between two remote hosts are transferred through the local host. Without this option the data is copied directly between the two remote hosts. Note that this option disables the progress meter. -4 Forces scp to use IPv4 addresses only. -6 Forces scp to use IPv6 addresses only. -B Selects batch mode (prevents asking for passwords or passphrases). -C Compression enable. Passes the -C flag to ssh(1) to enable compression. -c cipher Selects the cipher to use for encrypting the data transfer. This option is directly passed to ssh(1). -F ssh_config Specifies an alternative per-user configuration file for ssh. This option is directly passed to ssh(1). -i identity_file Selects the file from which the identity (private key) for public key authentication is read. This option is directly passed to ssh(1). -l limit Limits the used bandwidth, specified in Kbit/s. -o ssh_option Can be used to pass options to ssh in the format used in ssh_config(5). This is useful for specifying options for which there is no separate scp command-line flag. For full details of the options listed below, and their possible values, see ssh_config(5). AddressFamily BatchMode BindAddress CanonicalDomains CanonicalizeFallbackLocal CanonicalizeHostname CanonicalizeMaxDots CanonicalizePermittedCNAMEs CertificateFile ChallengeResponseAuthentication CheckHostIP Ciphers Compression ConnectionAttempts ConnectTimeout ControlMaster ControlPath ControlPersist GlobalKnownHostsFile GSSAPIAuthentication GSSAPIDelegateCredentials HashKnownHosts Host HostbasedAuthentication HostbasedKeyTypes HostKeyAlgorithms HostKeyAlias HostName IdentitiesOnly IdentityAgent IdentityFile IPQoS KbdInteractiveAuthentication KbdInteractiveDevices KexAlgorithms LogLevel MACs NoHostAuthenticationForLocalhost NumberOfPasswordPrompts PasswordAuthentication PKCS11Provider Port PreferredAuthentications ProxyCommand ProxyJump PubkeyAcceptedKeyTypes PubkeyAuthentication RekeyLimit SendEnv ServerAliveInterval ServerAliveCountMax StrictHostKeyChecking TCPKeepAlive UpdateHostKeys UsePrivilegedPort User UserKnownHostsFile VerifyHostKeyDNS -P port Specifies the port to connect to on the remote host. Note that this option is written with a capital 'P', because -p is already reserved for preserving the times and modes of the file. -p Preserves modification times, access times, and modes from the original file. -q Quiet mode: disables the progress meter as well as warning and diagnostic messages from ssh(1). -r Recursively copy entire directories. Note that scp follows symbolic links encountered in the tree traversal. -S program Name of program to use for the encrypted connection. The program must understand ssh(1) options. -v Verbose mode. Causes scp and ssh(1) to print debugging messages about their progress. This is helpful in debugging connection, authentication, and configuration problems. EXIT STATUS
The scp utility exits 0 on success, and >0 if an error occurs. SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-agent(1), ssh-keygen(1), ssh_config(5), sshd(8) HISTORY
scp is based on the rcp program in BSD source code from the Regents of the University of California. AUTHORS
Timo Rinne <tri@iki.fi> Tatu Ylonen <ylo@cs.hut.fi> BSD May 3, 2017 BSD

Red Hat

ProxyCommand with different keys

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