I have two remotes servers (Server_01 and Server_02).
My work literally is on Server_02. In order to access to Server_02, I need the first SSH to Server_01 then another SSH to Server_02.
(machine)$ ssh Server_01
(Server_01)$ ssh Server_02
(Server_02)$ ...
I would like to make things easier where I could use SecureCRT or terminal tab on-click to SSH to Server_02.
You are searching for ProxyCommand.
ssh Server_02 -o ProxyCommand='ssh Server_01 -W %h:%p'
or even better add Server_02 to your ~/.ssh/config
HOST Server_02
user <myUsername>
ProxyCommand ssh Server_01 -W %h:%p
Then you can simply use ssh Server_02 from your local machine
Related
I am currently using the following cmd to login to a ec2 instance using a jumphost -
ssh -J jumphost:2222 some_ip
I have installed csshX as I need to login to multiple instances simultaneously. I am not sure how to specify a jumphost in csshX.
Regards,
Aditya
You can use an ssh config, the default location being ~/.ssh/config which has a similar configuration, and ssh client honours it.
Host 192.168.*.*
ProxyCommand ssh jumphost -W %h:%p
and when you do csshX 192.168.0.10, it will go through the jumphost. (Tested and working from a mac.)
with two consecutive ssh authentications I mean the following:
I ssh to remote system A
from remote system A, I ssh to remote system B
There is no way to ssh to B directly.
I have no problems mounting directories from A using sshfs.
I thought about mounting directories from B on A but unfortunately A does not have sshfs installed. Even if, I would not know if it works.
Is there maybe another way to access directories on B in a convenient way?
My ~/.ssh/config looks like this now:
Host A
User user
HostName A.example.com
ControlMaster auto
ControlPath ~/.ssh/%r#%h:%p
Host B
User user
HostName B.example.com
ProxyCommand ssh -W %h:%p A
How would my sshfs command look like?
This does not work:
sshfs -o allow_other,defer_permissions -o user#B.example.com:/somedir ~/somedir
It outputs the error message:
remote host has disconnected
Use ProxyCommand or ProxyJump to do that transparently for the end application (sshfs). For example in ~/.ssh/config
Host A
# other configuration options needed
Host B
ProxyCommand ssh -W %h:%p A
Then you should be able to use sshfs transparently by directly specifying host B.
I am trying to ssh over my university's proxy server, to one of our lab's servers. The goal is to automate it with paramiko, but I am trying to first understand what's happening in the terminal level.
I tried
ssh -o ProxyCommand='ssh eran#proxy_server nc inner_server 22' eran#inner_server
And got
*** forbidden char/command over SSH: "nc inner_server 22"
This incident has been reported.
ssh_exchange_identification: Connection closed by remote host
Which I guess means the server does not allow the ProxyCommand.
Any way to achieve this in a different way?
Just to be clear, ssh to proxy_server, and then to inner_server, works fine, but doesn't produce a paramiko SSHClient instance, which is what I'm aiming for.
Do not use netcat. It is probably not allowed on the proxy server. Use -W switch:
ssh -o ProxyCommand='ssh -W %h:%p eran#proxy_server' eran#inner_server
I have been struggling with setting up a ProxyCommand to ssh through multiple hops. The issue I am having is integrating arguments in my normal ssh statement into the config file. I want to connect to IP2 via IP1. My username is greg and I am connecting using rsa. This is the one liner that will connect me:
ssh -A -t -p 22 -i ~/.ssh/private_key greg#IP1 ssh -A -t greg#IP2
I have tried a bunch of different config set ups and currently I am using:
Host ezConnect
ProxyCommand ssh %h nc IP2 22
HostKeyAlias IP2
HostName IP1
User greg
I know the issue is that it does not include the arguments I need, but wherever I try to put them it seems to break.
The reason I'm doing this is because I need to use a db GUI (navicat) to connect through a gateway server and the UI doesn't support a strait up ssh command.
Any help would be appreciated.
I figured it out so here is the correct config fie:
Host ezCon
Hostname **IP2**
User greg
ProxyCommand ssh -l greg -p 22 -i ~/.ssh/private_key **IP1** -W %h:%p
I currently have to SSH 3 times to get into the machine I need:
ssh gatekeeper
[passwd1]
ssh master_server
[passwd2]
ssh my_machine
[passwd3]
Is there a better way to do get into my_machine? Pretty cumbersome to have to do it every time.
Nice - this worked:
Host my_machine
Hostname my_machine
ProxyCommand ssh user2#master_server -W %h:%p
ProxyCommand ssh user1#gatekeeper -W %h:%p
I don't really know for 3 SSH, but here is my way for 2 (lets say : me -> master_server -> my_machine).
You need to add a configuration file in your home :
~/.ssh/config
Then you write in that file :
Host my_machine
Hostname my_machine.example.com
ProxyCommand ssh other_or_same_login#master_server -W %h:%p
And you call
ssh login#my_machine
Then you will have to enter twice your password (or 3 times in your case). If you don't want to type passwords, you can use the key access option.
For another ssh, I guess you need to write another section in the config file, but since I can't try I don't wan't to say something wrong.
Hope this helps.