How can I rewrite the following command with ProxyCommand
?
ssh -l username1 -t jumphost1 \
ssh -l username2 -t jumphost2 \
ssh -l username3 -t jumphost3 \
ssh -l username4 server
This doesn't work
ssh -o ProxyCommand="\
ssh -l username1 -t jumphost1 \
ssh -l username2 -t jumphost2 \
ssh -l username3 -t jumphost3" \
-l username4 server
username1@jumphost1's password:
Pseudo-terminal will not be allocated because stdin is not a terminal.
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,gssapi-keyex,gssapi-with-mic,password).
ssh_exchange_identification: Connection closed by remote host
I'm aware of its use with nc
, but I'm searching for way to use it with 3+ hops, and also use this option with scp
. I checked ssh_config
man page, but the information is quite scarce, for me at least.
EDIT
I tried using ProxyCommand
nested in another ProxyCommand
as suggested below but I always get something along the following lines
debug3: ssh_init_stdio_forwarding: 192.17.2.2:2222
debug1: channel_connect_stdio_fwd 192.17.2.2:2222
debug1: channel 0: new [stdio-forward]
debug2: fd 4 setting O_NONBLOCK
debug2: fd 5 setting O_NONBLOCK
debug1: getpeername failed: Bad file descriptor
debug3: send packet: type 90
debug2: fd 3 setting TCP_NODELAY
debug3: ssh_packet_set_tos: set IP_TOS 0x10
debug1: Requesting no-more-sessions@openssh.com
debug3: send packet: type 80
debug1: Entering interactive session.
Fortunately, since 7.3
-J
or ProxyJump
serves my purpose — although I still to have to work around my keys setup.
ssh -q -J user1@jumphost1,user2@jumphost2,user3@jumphost3 user@server