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

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SSH showing “Message from syslogd@webhost at…” after inactivity [closed]

I was logged-in on server through SSH, After few minutes of inactivity I saw following messages appeared on terminal Message from syslogd@webhost at Aug 11 08:10:30 ... kernel:nf_ct_ftp: dropping ...
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1answer
40 views

Does rsync over any type of checksum? [duplicate]

I need to transfer files from several servers to a single remote host using Rsync over SSH. However, I need to be sure that before the file is deleted on the source using the --remove-from-source ...
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1answer
39 views

SSH Automatic login With Floating Profile

I've floating profile on server. There's no local account. All machines load same profile. I tried to use public key for automatic login without any luck. Is there any way to automatic login without ...
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2answers
56 views

Open the SSH Door to a Knocking Friend

I am logged into my Debian machine. I want my friend to get in via SSH. He comes to authenticate as the user friend. My machine asks him for a password. He does not know the password. I want to ...
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45 views

Work on a remote project with Eclipse via SSH and SVN+SSH (2 remote Linux)

I have the following boxes: a) A Windows box with Eclipse CDT(or PTP) b) A Linux box,including Compiler, accessible for me only via SSH. c) A Linux box, including SVN Source, accessible for me only ...
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1answer
32 views

Start Server Remotley

I am trying to start my server remotely with this ssh root@xxx.xx.xx.xx /sbin/reboot And keep getting this back ssh: connect to host xxx.xx.xx.xx port 22: Operation timed out Why can't I start ...
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29 views

Password entry only responds to Ctrl + D, and password cannot be read

I am trying to run build-key-pkcs12 user on my OpenWRT NSLU2, to generate some client keys for the users of my VPN. Everything runs normally until I get to the enter export password part, and the SSH ...
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1answer
17 views

Running ssh from chroot jail in SuSE

I'm trying to make a server that acts as sort of an access point for lots of other machines. I want to give one user jailed access to it so they can ssh to other machines in the network. I've got ...
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How to configure fail2ban on proftpd CentOS 6.6

I've looked every forum, fail2ban official website, everything that have word fail2ban, and every config that I tried didn't work. After reaching maxretry that I setted in jail.conf the user don't ...
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45 views

sftp (ssh_exchange_identification: read: Connection reset by peer)

I'm trying to sftp to a remote host, yet keep getting following output: $ sftp -v X.X.X OpenSSH_6.6.1, OpenSSL 1.0.1e-fips 11 Feb 2013 debug1: Reading configuration data /home/alexus/.ssh/config ...
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35 views

can't log in to centos 7 VPS /lib64 missing?

Never happened to me before but cannot log in as root, after typing in password it says Last failed login: bin/bash: No such file or directory Connection closed. Besides contacting my ...
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3answers
48 views

How to start two processes piggie-backed? So the first finishes when the second finishes?

I'm running a script with ssh commands to a server behind a jump-host. Each time I want to run a command on my server in the secure network, I need to ssh into the jump-host (bastion) server and run ...
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55 views

“Too many open files ssh” when the number of open files is far below ulimit

I was trying to set up 2000 concurrent ssh connections, but got the error message in server log (i.e. journalctl): sshd[1356]: error: reexec socketpair: Too many open files I've set both the soft ...
4
votes
1answer
60 views

unable to connect to forwarded port over ssh

I have two servers. Server 1 has access to an Oracle instance on a server I have permission to hit but not login to via SSH. I would like to use SSH port forwarding to connect from server 2 to server ...
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1answer
34 views

OpenWrt bricked router is not connected via USB to serial cable

I am a newbie in OpenWrt development. I have a problem in my router when I try to upgrade my router (TP-Link TL-WDR-3600) to openwrt firmware via web ui. Now my router is bricked and I can't ...
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0answers
78 views

scp does not honor .ssh/config

Used for a few years arcfour as default cipher for SSH2 connection in my ~/.ssh/config file host namaka hostname localhost port 2022 ciphers arcfour IdentityFile ~/.ssh/virtualbox ...
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2answers
50 views

Can connecting to a SSH tunnel result in a vulnerability?

it's probably a noob question, but I haven't found a real answer yet. I bought a proxy service. In order to setup my browser I have to establish a SSH tunnel to their server. Since I do not want to ...
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1answer
29 views

Vim pausing randomly for a minute or so at a time

I'm running Linux Mint Maya 13.2 on a laptop from a USB stick, and SSHing onto that install from my own work computer. When i'm editing a file with Vim, i keep getting a pause of about a minute where ...
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1answer
33 views

If I use an SSH tunnel to forward a remote port to a local one, and my IP address changes, will that tunnel still work?

Simple - trying to use my personal computer as a server, by forwarding a public static IP address's port to mine, but I'm worried about Comcast pulling out the rug from underneath my feet and changing ...
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3answers
47 views

Check services running on the server and restart them if they have stopped?

I am trying to write a python script which shows me the services which are running on my server. The thing is that mongodb keeps going down on the server and each time it happens I have to manually ...
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131 views

Enable Massive Concurrent SSH to a single server

My goal is to allow 10000 concurrent sshs running on a single server. For simplicity I am ssh-ing to localhost: for i in `seq 1 10000`; do ssh localhost "echo ${i}; sleep 100" >>./info ...
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1answer
88 views

Issue with ':' character in Bash script over SSH

I am currently writing a script that will perform backups on a set of databases, comress them, encrypt them, transfer them to a separate storage machine, and verify that the file made it successfully. ...
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1answer
39 views

How to programatically control X11 forwarded apps?

I'd like to set-up X11 Forwarding to run remote X applications on the server and X11 client can handle the UX interaction. However I would like to configure the X11 client or fake it to actual do the ...
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11 views

Chroot Users to /opt and subdirectories [duplicate]

I'll make this short and hopefully I make sense. Im trying to give a user ssh access, but, he/she must only be able to access /opt and the few subdirectories that live under it. However, here's ...
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50 views

How to use tty allocation to run GPG through SSH?

I am trying to encrypt and sign a local file using a distant GPG installation via SSH: pv file | ssh -tt [ssh server] gpg -se -r [receipt key] > file.gpg Using the double t option removes the ...
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1answer
34 views

running screen in a shell can't find sessions but running screen during ssh login can

I am using the RemoteLoginAutoScreen script to start a screen session when I ssh into a host. Differences from linked script: I am using zsh and the RemoteLoginAutoScreen uses bash The problem that ...
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1answer
37 views

How do I configure SSH so that OTP can be used with ssh-copy-id and then only keypair authorization is accepted?

As you may be able to tell from the title of this post, part of my confusion may stem from an inability to express the question, so please bear with me. Here is what I am trying to accomplish: ...
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1answer
50 views

How do I run X11 applications over ssh from a Gentoo server that does not have a GUI installed (with minimal added software)?

Currently I am renting a VPS from VPS.net running Gentoo. How can I run "X11" applications remotely without installing a full GUI on the VPS. What is the minimum pieces of "X11" I would have to ...
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1answer
21 views

X11Fowarding not working on Arch Linux ARM

I am trying to setup X11Forwarding between my Arch Linux ARM server and my OSX computer. I am accessing the server locally (always). /etc/ssh/ssh_config: X11Forwarding yes AddressFamily any ...
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1answer
38 views

ssh over unix pipe or pty device [closed]

Ok, I don't even know how to put this into words. I have a /dev/myDevice which automatically connects to some ssh server when opened. How do I connect to it with ssh? Is this even sane? If it's insane ...
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2answers
58 views

Git config forwarding

I don't know if this even possible or not. I was wondering if there is any way like SSH Agent forwarding by which we can forward our .gitconfig on the remote server, and git automatically picks the ...
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2answers
51 views

How can I maintain open ssh connection and use it from shell scripts?

Currently i invoke the following: $ ssh me@host.com my_cmd This is slow and not easy to automate safely. I would like to establish ssh connection once and have some script that will forward my ...
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36 views

Why won't MOTD display output from a Python script it calls outside of /etc/update-motd.d/ unless it's in this directory?

The Situation We're running a headless Ubuntu 14.10 Server to fulfill various needs and tests. I was experimenting with changing the MOTD for SSH sessions via /etc/update-motd.d/ so as to display ...
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64 views

Rlogin prompting for remote password (Kali / Metasploitable)

I am following a tutorial that can be found here. http://www.kalitutorials.net/2014/05/metasploitable-2-vulnerability.html Specifically the "Remote access vulnerability - Rlogin" section. When I ...
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37 views

Flash OpenWrt Routers from Telnet

I have two routers. One has Chaos Calmer and the other has Attitude Adjustment. When I turn them on and check arp, nothing comes up. When I check route, the hardware address says (incomplete) but the ...
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1answer
16 views

Working with screen via another screen session

I connect to Host1 using ssh and start a screen session. From one of those windows I ssh into the Host2, which launches a screen session on login. How can I create new/switch between screen windows ...
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37 views

SSH multi hop with certificate

I need make a SSH multi hop connection from A --> B --> C B is a bastion host and C is the target. In my client (A) we are the two SSH certificate, for B and for C, how to make a connection to C ...
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1answer
50 views

Why the number is rounded over ssh? [duplicate]

localhost:~ $ df -k / | awk '{print $3/1024/1024/1024}' 0 0.00618061 localhost:~ $ ssh localhost "df -k / | awk '{print $3/1024/1024/1024}'" 01 01
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1answer
41 views

Disabling ssh password authentication does not work on my debian VPS

I have a Debian 7 VPS setup. I just enabled SSH Key authentication and disabled password authentication but the disabling did not work. When I attempt to SSH into my VPS, it prompts me for my SSH Key ...
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96 views

Give a user permission to one folder

I have made so my group "sftponly" can access the users home folder. But right now the user in the group don't have permission to other folders, but they have permission to see them. How can I do so ...
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30 views

OpenWrt with Nodogsplash

I have a web application in MVC4 for Hot Spot Management system. I using it with OpenWrt and Nodogsplash, Now i need to authenticate the users in to external website. Is there any way to allow to ...
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2answers
40 views

transfer many similar files over ssh

A service on a linux server is only able to do full backups, where each backup is a .tar archive (no compression). Many contents of the archive do not change from day to day. Each .tar file size is ...
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38 views

Error installing java on Virtual Machine

I am trying to deploy a server app (BaasBox) to Google app Engine BaasBox requires java 1.6 or higher to execute. when I check for java on the virtual machine using java -version, I get this: ...
2
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2answers
42 views

Simple notification on program completion

I'm running something while ssh'ed into a machine (through mosh). I would use sendmail to get a notification on termination of a program, but this machine cannot connect to the network for security ...
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1answer
46 views

Pinentry fails with gpg-agent and SSH

I'm running Fedora 22. I'm trying to setup GnuPG to have my SSH connections authenticated using my PGP authentication subkey that is located on my Yubikey Neo. I have a systemd unit starting the ...
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1answer
88 views

Possible to pipe command using su via ssh

I'm trying to write a python script to remotely update the login passwords for a set of account I administer - I can already successfully use python to pipe remote commands via the stdin of an ssh ...
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1answer
29 views

dropbox process stops when I log out of ssh

I tried every solution from How to run Dropbox daemon in background? and nothing solves my problem: Basically, I already installed dropbox on my Ubuntu 12.04LTS headless server. I got init.d setup ...
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49 views

SSH connection breaks after executing commands (broken pipe)

I am connecting to a remote machine on WAN and LAN networks using SSH. After logging in with username & password I type some commands in the shell. After the 2nd or 3rd command PuTTY throws the ...
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47 views

How to capture tail -f output from remote host indefinitely

I am trying to monitor a remote, embedded host that is writing output to a file: /var/log/myapp.log This host may lose power for hours. The app may be killed and restarted. On my local machine, I ...
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51 views

Difference between ssh manually and in a script

I am using AIX. I am trying to open pvcs Serena application which is present in a Linux server. If I manually ssh to Linux server, set DISPLAY variable and invoke pvcs it is working properly. However ...