Simply, I am unable to mimic a ssh -c <cipher> <user>#<host> call with Remote SSH with VS Code. I allow the extension (Remote SSH) to auto-generate the config based off the input ssh command, yet the command is not replicated when the config file is sourced
The command output in VS Code's terminal
[Timestamp] Running script with connection command: ssh -T -D <5 digit Port> -F "<Path to Config File>" "<Host>" bash
The provided ssh command
ssh <user>#<host> -c <cipher>
And the auto-generated config contents inside VS Code
Host <hostname>
HostName <hostname>
User <user>
Cipher <cipher>
Any guesses on why the disconnect between the provided command, the generated config file and the output command? I am unable to find anything online with VS Code & SSH & Usage of Ciphers.
If important, this is from Windows 10 to a Linux box on an AWS workspace virtual machine, and I can ssh no problem from powershell as well as use remote interpeter within pycharm professional on the windows machine
I have to connect from a Windows 10 / Windows Server 2016 machine to a Linux machine (CentOS) to execute a command to disable a server in haproxy. On a local Linux machine the command is sudo echo "disable server http/test1" | socat tcp:127.0.0.1:9191 stdio and it works. But I have to create a script / command line to let a Windows machine do the magic. I´ve tried powercat but it will not work. So I decide to use ssh client on the Windows machine. The command line is
ssh -l haproxy-user -i private.ppk 10.0.0.20 "sudo echo "disable server http/test1" | socat tcp:127.0.0.1:9191 stdio" but I didn´t get the option to enter the passphrase for my identy file. Or is there another option to execute the command line?
I wonder if there is a way for me to SCP the file from remote2 host directly from my local machine by going through a remote1 host.
The networks only allow connections to remote2 host from remote1 host. Also, neither remote1 host nor remote2 host can scp to my local machine.
Is there something like:
scp user1#remote1:user2#remote2:file .
First window: ssh remote1, then scp remot2:file ..
Second shell: scp remote1:file .
First window: rm file; logout
I could write a script to do all these steps, but if there is a direct way, I would rather use it.
Thanks.
EDIT: I am thinking something like opening SSH tunnels but i'm confused on what value to put where.
At the moment, to access remote1, i have the following in $HOME/.ssh/config on my local machine.
Host remote1
User user1
Hostname localhost
Port 45678
Once on remote1, to access remote2, it's the standard local DNS and port 22. What should I put on remote1 and/or change on localhost?
I don't know of any way to copy the file directly in one single command, but if you can concede to running an SSH instance in the background to just keep a port forwarding tunnel open, then you could copy the file in one command.
Like this:
# First, open the tunnel
ssh -L 1234:remote2:22 -p 45678 user1#remote1
# Then, use the tunnel to copy the file directly from remote2
scp -P 1234 user2#localhost:file .
Note that you connect as user2#localhost in the actual scp command, because it is on port 1234 on localhost that the first ssh instance is listening to forward connections to remote2. Note also that you don't need to run the first command for every subsequent file copy; you can simply leave it running.
Double ssh
Even in your complex case, you can handle file transfer using a single command line, simply with ssh ;-)
And this is useful if remote1 cannot connect to localhost:
ssh user1#remote1 'ssh user2#remote2 "cat file"' > file
tar
But you loose file properties (ownership, permissions...).
However, tar is your friend to keep these file properties:
ssh user1#remote1 'ssh user2#remote2 "cd path2; tar c file"' | tar x
You can also compress to reduce network bandwidth:
ssh user1#remote1 'ssh user2#remote2 "cd path2; tar cj file"' | tar xj
And tar also allows you transferring a recursive directory through basic ssh:
ssh user1#remote1 'ssh user2#remote2 "cd path2; tar cj ."' | tar xj
ionice
If the file is huge and you do not want to disturb other important network applications, you may miss network throughput limitation provided by scp and rsync tools (e.g. scp -l 1024 user#remote:file does not use more than 1 Mbits/second).
But, a workaround is using ionice to keep a single command line:
ionice -c2 -n7 ssh u1#remote1 'ionice -c2 -n7 ssh u2#remote2 "cat file"' > file
Note: ionice may not be available on old distributions.
This will do the trick:
scp -o 'Host remote2' -o 'ProxyCommand ssh user#remote1 nc %h %p' \
user#remote2:path/to/file .
To SCP the file from the host remote2 directly, add the two options (Host and ProxyCommand) to your ~/.ssh/config file (see also this answer on superuser). Then you can run:
scp user#remote2:path/to/file .
from your local machine without having to think about remote1.
With openssh version 7.3 and up it is easy. Use ProxyJump option in the config file.
# Add to ~/.ssh/config
Host bastion
Hostname bastion.client.com
User userForBastion
IdentityFile ~/.ssh/bastion.pem
Host appMachine
Hostname appMachine.internal.com
User bastion
ProxyJump bastion # openssh 7.3 version new feature ProxyJump
IdentityFile ~/.ssh/appMachine.pem. #no need to copy pem file to bastion host
Commands to run to login or copy
ssh appMachine # no need to specify any tunnel.
scp helloWorld.txt appMachine:. # copy without intermediate jumphost/bastion host copy.**
ofcourse you can specify bastion Jump host using option "-J" to ssh command, if not configured in config file.
Note scp does not seems to support "-J" flag as of now. (i could not find in man pages. However above scp works with config file setting)
There is a new option in scp that add recently for exactly this same job that is very convenient, it is -3.
TL;DR For the current host that has authentication already set up in ssh config files, just do:
scp -3 remote1:file remote2:file
Your scp must be from recent versions.
All other mentioned technique requires you to set up authentication from remote1 to remote2 or vice versa, which not always is a good idea.
Argument -3 means you want to move files from two remote hosts by using current host as intermediary, and this host actually does the authentication to both remote hosts, so they don't have to have access to each other.
You just have to setup authentication in ssh config files, which is fairly easy and well documented, and then just run the command in TL;DR
The source for this answer is https://superuser.com/a/686527/713762
This configuration works nice for me:
Host jump
User username
Hostname jumphost.yourorg.intranet
Host production
User username
Hostname production.yourorg.intranet
ProxyCommand ssh -q -W %h:%p jump
Then the command
scp myfile production:~
Copies myfile to production machine.
a simpler way:
scp -o 'ProxyJump your.jump.host' /local/dir/myfile.txt remote.internal.host:/remote/dir
I have one file in my local Linux machine and I want to move that one to remote machine and then execute one command on remote machine to restart the service. The issue is after moving the file the remote connection get closed. I have used the following command:
rsync --remove-source-files -av -e ssh -t /home/testdata.txt root#vdstvmaster:/home/; service restart
If I execute the above command file is successfully moved to remote machine. But the second command (service restart) is not executed on remote machine.
rsync can use a remote shell to perform the copy operation. But it is not meant as a "general-purpose" remote shell application. Just invoke the second command over SSH locally after the rsync command like this:
rsync --remove-source-files -av -e ssh -t /home/testdata.txt root#vdstvmaster:/home/
ssh root#vdstvmaster service restart
BTW some people may consider remotely logging into another machine as root bad security.
Problem Statement- I want to copy some files from remote machine (linux) to my windows machine. I know I can do it using pscp.
I tried looking on the internet, I found several articles, but in those articles I was not able to understand and I was having lot of problems in copying the files from Linx box to Windows.
Can anyone provide me step by step method here, so that I can follow that to transfer files. That will be of great help to me.
I am connected to host cli.vip.host.com using putty and that is linux with username- rkost and password as- password. And I want to copy file a.txt from linux to windows.
Download PSCP from below link
https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html
Run PSCP
Got to command prompt
Use the below code
Copy single file
pscp user#host:remote_path/file_name host_path\file_name
eg: pscp user1#192.168.1.10:/home/user2/a.txt c:\Desktop\a.txt
Copy all files in a folder
pscp user#host:remote_path/* host_path\
eg: pscp user1#192.168.1.10:/home/user2/* c:\Desktop\test\
Copy all files & folders in a folder
pscp -r user#host:remote_path/ host_path\
eg: pscp -r user1#192.168.1.10:/home/user2/ c:\Desktop\test\
For this kind of problem I use all the time netcat. First, you start netcat as server on a machine with an ip IP_address, and afterwards you send the file from the other machine.
nc -l -p <port-number> > out_file
will start it as server in "listen" state, and will save what you send to it in the file "out_file".(check the man page of your version for more parameters.)
From the other machine you send the file something like this:
< file_to_send nc IP_address
(If you want to send an whole directory, you use tar )
I never used it under Windows (because I work as linux engineer). But you can find nc for windows, that work the same as in linux...
if you want to use pscp, you can do this:
pscp -pw password rkost#cli.vip.host.com:/path/to/file c:\path\
if this doesn't work try to add enviroment variable:
set PATH=C:\path\to\putty\directory;%PATH%
After installing POWERSHELL
wow64_microsoft-windows-powershell-exe
you can open the terminal and execute this command line
pscp -r -P Port user#IP:path WINDOWS path
example:
pscp -r -P 2222 user#MyDommain.com:/var/www/html C:\2023\HTML
Make sure you are connected to your vpn server, (i.e. cli.vip.host.com)
use following command from your windows machine
pscp -v rkost#remote_ip_addr:/path/to/file/a.txt c:/some_location/
you can see the verbose with -v flag.
If you wants to copy directory from remote linux machine to your windows
just refer my answer in this
PSCP copy files from godaddy to my windows machine