SSH (Secure SHell) is a protocol for running commands on a remote computer.

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Does “PermitEmptyPasswords yes” work? - How to make ssh user with empty password?

// note: I keep polishing chroot part and will keep updating this post and attached doc: https://goo.gl/TjhrWd // The question is: how to make "passwordless" i.e. "empty password" part running? How ...
3
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2answers
27 views

How can I auto-close dropped SSH connections?

When I work on my server remotely, sometimes my SSH connections get dropped due to network issues. When I re-connect to my server, the dropped sessions remain open. I can see them when I run w. I'm ...
1
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3answers
27 views

How to understand ssh-keygen and ssh-copy-id?

As far as my understanding, machine(A) ssh-keygen generates a key, and ssh-copy-id gives this key to another machine (B), is it? But when this is done, to test whether this is done or not is using ...
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1answer
24 views

Impact of removing ssh_config file

Pretty new to Linux here. Trying to get a better grip on the OS.  Here is my problem - I have a question about the impact of removing ssh_config file from a Linux box. I was having some cipher ...
0
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0answers
23 views

Can't ssh into my server from another computer

I used to be able to ssh into my server from other computers. But I stupidly messed up my remote connection setup a couple weeks back (I don't remember what I did...) and now I can't ssh into my ...
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0answers
12 views

Need to fix user access on centos

I screwed up user permission for my account "yann" on a centos 7 server. I would like to have that user to access rw on all folder under /home to manage the webserver folders. Each top level folder ...
1
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1answer
22 views

cannot get screen command to execute code containing DISPLAY=:0

I am trying to ssh into a remote machine and run a shell script, which opens a GUI. I want the GUI to open on the remote machine and remain open (so I am using DISPLAY=:0 nohup). I tried: ssh -t ...
0
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1answer
40 views

ssh key_load_public: invalid format warning

SSHing into my system succeeds but even without the -v flag I get key_load_public: invalid format message. Below is the output w/ using the verbose flag. Specifically debug1: key_load_public: No ...
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3answers
30 views

nothing happens when I try to ssh [on hold]

When I try to ssh into my work server, the command just gets stuck. The command doesn't return anything. When I strace'd it, it seems like its stuck mid-execution. I know it is a problem with my ...
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2answers
20 views

Can't start remote WildFly with ssh

When executing remote script with SSH: ssh user@192.168.0.10 -t sudo /etc/init.d/wildfly start WildFly not started. If I run ssh user@192.168.0.10 -t /home/user/my.sh my.sh: !#/bin/bash sudo ...
3
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2answers
36 views

Feedback when entering passwords, without revealing length

I often SSH into a machine and use sudo on it. When entering passwords, I'm always afraid that another window will steal the focus. However, I don't want to display asterisks (with pwfeedback, for ...
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0answers
52 views

Executing remote code with arguments

Why this: ssh -i ~/.ssh/master.pem ec2-user@xx.xx.xx.xx 'bash -s' < `dirname $0`/elements/"$element" returns hostname.sh test-5000: No such file or directory when $element is not a just a single ...
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0answers
60 views

Being Prompted for Password After Already Registered Public Key On server

NOTE: This is not a duplicate to the popular question. Why am I still getting a password prompt with ssh with public key authentication? I had an original post but I did not get much answers helping ...
0
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1answer
47 views

Everytime I restart my Digital Ocean server, .ssh/authorized_keys changes

So I am facing a strange issue with my digital ocean server. Everytime I restart the server manually from the website my .authorizedkeys get reset. It always has a value ssh-rsa ...
2
votes
1answer
29 views

Ways to restrict remote user to only access a remote database

I want to be able to setup a remote user that can update a PostgreSQL database on a production server. I have two machines, one is a local server that I use as a command and control system, named ...
1
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1answer
18 views

Can I use `internal-sftp` when using wrapper script with `ForceCommand` in sshd?

I use /etc/ssh/wrapper.sh script, like in tutorial, that filters which commands are allowed to be run via ssh and logs them. Currently when internal-sftp is required, I use /usr/lib/sftp-server. Is ...
0
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1answer
29 views

autossh over many LocalForward ports

I have to connect to a base server, call it server1, and the from there, I can access many other servers (host1, host2, ...host99.) I have the autossh working for server1 with no problems - it ...
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2answers
40 views

How to make ssh account capabele to only sshfs and rsync?

I'd like to make ssh account that is capable of doing two things: mounting (can be one) directory via sshfs performing backup&recovery of his/her desired directories using rsync I would love ...
2
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0answers
46 views

ssh X11 forwarding

I am trying to connect ssh from my laptop to my raspberri pi 3b locally. However when I try to connect by: ssh -v user@local-raspberri-IP it gets stuck at X11 forwarding. The output that I get is: ...
1
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2answers
37 views

SSH to a remote Machine using a different Local ID

I need help related to SSH. Let me explain a scenario. I am logged in as "user1". Host A: user1 user2 Host B: remoteuser. There is a trust relationship setup between user2 on Host A and ...
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0answers
28 views

Plink never return to command line [closed]

I'm trying to use plink to execute command from file. So I use it this way: plink -ssh user@host -pw pass -batch -m "path_to_script" But unfortunately plink never return to terminal. I also tried ...
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2answers
44 views

Why does SCP fail when “RequestTTY force” option is enabled?

In my SSH config file, I have to enable the RequestTTY force for some important reasons. And currently my config file looks like this: Host x.x.x.x HostName yyyy StrictHostKeyChecking no ...
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4answers
61 views

Issue with ssh && apt-get, need advice

I decided to dust off my Beaglebone Black Rev.C and figured before I do much of anything, I should get everything up to date. I created an SD card with the new Debian 8.3 image and installed it. No ...
0
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3answers
65 views

I want to copy a remote txt file via SSH, but without using root access

I want to copy my hosts to remote /etc/hosts but it doesn't work. I know root SSH access makes things easier, but IMHO root SSH access is a little dangerous. cat /etc/hosts|ssh samba2 "sudo su -c ...
0
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1answer
37 views

unable to SSH to eth1 after bringing down eth0

I have a remote machine with 2 interfaces: eth0 and eth1. I am able to ssh using eth0 ip address as well as eth1 ip addr. However, things go strange once I bring down eth0 using the command ifdown ...
0
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1answer
30 views

rsync over ssh without typing the password each time [duplicate]

I got a bash script to synchronize data between two computers. It works fine but I have to type my password every time the rsync command is called. #!/bin/bash sourceIP="192.168.178.128" ...
0
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1answer
31 views

Rental server refuses SSH connection; won't allow authorise me to download my SSH key

I am attempting to connect to my rental server via ssh to install MemSQL for a project. I have written the following in ~/.ssh/config: HOST eHosts HostName e9.ehosts.com Port 2222 User orderof3 But ...
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0answers
24 views

Strange X11 forwarding issue [closed]

I have a strange issue regarding ssh x11 forwarding. Assume I have an host named node71. Firstly, I start Cygwin/X and mintty in Windows, now the local DISPLAY=0.0 Next, I can do ssh root@node71 -Y, ...
0
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2answers
26 views

How to suppress debug2 messages during SSH session?

When I am logged into my home Linux machines via SSH, I get the following debug output a few times every minute: debug2: channel 0: request window-change confirm 0 When I am editing files in nano, ...
0
votes
1answer
25 views

Source ~/.bashrc when using the shell recorder `script`

I am using the first answer from How to automatically record all your terminal sessions with script utility to record my terminal sessions, however, I can not figure out how to get my bashrc to be ...
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0answers
29 views

run commands via proxy in centos [closed]

i want run some commands in my centos but i need tunnel my commands to another ip. for example my server ip is: 111.111.111.111 and i have another server with this ip: 222.222.222.222 when i run ...
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0answers
14 views

How to connect Ubuntu 14.04 NIS Client to a IRIX NIS Server

I'm trying to connect a new Ubuntu 14.04 Server (64Bit) as NIS Client to an SGI Irix NIS Server. It's a standard installation of Ubuntu, only ssh, nfs and nis (pam and other stuff came along by ...
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2answers
33 views

linux + ssh login took time from one server to another

I have a central Linux server (Red Hat version 6.5), and from this server I establish SSH sessions to other servers. To one server the SSH login took around 5 seconds, while to all others it took ...
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votes
1answer
29 views

How To Copy Files From Local Windows Machine To Remote Server [closed]

I want to copy a file from my local machine to a remote server. My local machine is running on Windows 10 and I use PuTTY to connect to the remote server, which is running Ubuntu.
0
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1answer
56 views

Why “lsof” is not working when it used in ssh? [duplicate]

I found this command line is not working ssh i01n10 "/usr/sbin/lsof -p $(pgrep -nf a.out)" it shows the error lsof: no process ID specified However ssh i01n10 "$(pgrep -nf a.out)" ...
1
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1answer
30 views

How can a daemon user connect through SSH? [closed]

I have launched process named redmine that launched by deamon user – redmine. Some inner redmine (as process) plugin needs SSH connection to outer service and make it from redmine (user), but this ...
0
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1answer
19 views

Instantly getting Write Failed: Broken Pipe with SSH to an embedded system

As said above, when I try to SSH into my embedded system (a De0-Nano-SoC FPGA development board running Angström with Kernel 4.1) I get a "Write Failed: Broken Pipe"-Error and get disconnected. I read ...
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0answers
43 views

Permission denied when accessing SSH server

So, a little background. I'm trying to host my own git server, and I decided to use SSH to log into it. I started two days ago, trying to configure SSH, to no avail. I'm hosting the server on my home ...
2
votes
1answer
54 views

bash: cannot create temp file for here-document: No space left on device

one day I was doing some stuff and I might have changed something which I shouldn't (I was working on the /etc/network/interfaces file). By the way, this is my OS: $ uname -a Linux ribas ...
1
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1answer
29 views

Setting up port forwarding on router for reverse SSH tunnel

My home PC is behind NAT but my router has static ip address. My work PC uses 3G stick for Internet (So I guess it is like being behind NAT). I would like to create a reverse SSH-tunnel to connect to ...
0
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4answers
93 views

How to run subshell commands over SSH?

I have a cluster of computers which are connected via passwordless SSH and I have written a utility which runs a command over the entire cluster. The way it does it is by picking up machines present ...
1
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0answers
10 views

Share socks5 connection to a 2nd NIC system wide

I'm trying to accomplish the following: I have a server with two NICs. One is wireless (wlan0) made as an access point (using hostapd) and the other one (eth0) is connected to a network that doesn't ...
1
vote
1answer
27 views

How to force low ssh-encryption

I regulary backup my computer to my BananaPi with a Hard Disk connected. The Problem is, that the transfer speed over ssh is pretty low because the Pi can't handle AES 256 encryption quick enough. ...
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0answers
24 views

.bashrc - Create an alias for SSH declare Function [duplicate]

So, I have a function: function () { command1; command2; } When I do ssh root@server "$(declare -f function) function parameter" It works fine. So, I want to make it simplier - through an ...
0
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2answers
39 views

SSH timeout to everywhere after a fresh RHEL7 install

[user@desktop ~]$ ssh root@foobar ... $ sudo su - [YOU HAVE NEW MAIL] root@foobar:/home/root # cd /etc root@foobar:/etc # Connection to 1.2.3.4 closed by remote host. Connection to 1.2.3.4 closed. ...
0
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1answer
29 views

SSH tunnel with different ssh port

I am trying to make a ssh tunnel connection to a remote server that has different SSH port. My PC hostname: fooserver.com IP address: 10.25.0.186 SSH port: 63354 My Remote PC hostname: ...
1
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1answer
91 views

Automatically enter SSH password without using SSH Key, 'expect', 'sshpass' or Python

I have small device that starts up a tiny VM of PowerPC linux that I need to SSH into from a script on a tiny version of Yocto linux. The PowerPC VM SSH passwords stay the same, but it resets most of ...
0
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1answer
32 views

Xming for Linux? (Aka run a display/x11 server inside a window)

With Xming I can run an X11 server inside a window and then run mate-session to get a very fast remote desktop inside a window. On Linux, I'm not entirely sure how to X11 forward mate-session to just ...
0
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2answers
24 views

How to forward ssh X11 from an ssh session to base computer?

I am working from out of town, so I need to connect my computer at campus. Normally, when I am around the campus I can just use my ip of lab computer to forward x11 like; ssh -X acc@lab-computer ...
1
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1answer
20 views

Allow the restricted rsync (rrsync) script for arbitrary directories with authorized_keys

Automating Backups I would like to implement a backup solution with copies data from various directories from a Web server (WebServer) to a local backup server (BackupServer). The backup should run ...