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

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ssh passwordless login not working on RHEL

After following this tutorial for setting up SSH pubkey auth, I cannot seem to get passwordless login to work, It always redirects me to the password authentication. As far as I am aware, I have ...
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2answers
37 views

which unix or linux command is used to change root password of remote machine(Just an IP address) without using SSH Login [closed]

which unix or linux command is used to change root password of remote machine(Just an IP address)? Suppose I just have an IP address of the target machine which is on my network, But I do not know ...
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2answers
39 views

Can't use SSH anymore after installing denyhosts

so I'm in a very tricky situation. I've installed denyhosts on my debian machine and suddenly I can't use SSH anymore. Hopefully I could still login through webmin, but with root, so I had to login ...
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1answer
44 views

Getting more output from NetCat

Currently I'm using the standard netcat -e /bin/sh to provide a remote shell for other computers to access. The problem is however that this shell is rather terrible, since it has limited output. For ...
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0answers
22 views

ssh-copy-id hangs with 8192-bit key

Having a bit of an issue with ssh-copy-id it seems to hang when i try to copy 8192-bit rsa keys accross to an OpenIndiana server. I running OS X as my client OS. Is anyone aware of issues with keys of ...
2
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1answer
38 views

Is it possible to have multiple SSH host aliases? [duplicate]

I have a laptop that can obviously be inside or outside of my home network at times. When I need to SSH into a machine inside of my network, the connection is fairly straightforward: localhost $ ssh ...
3
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1answer
31 views

How do I generate SSHFP records?

I need to setup SSHFP records in the DNS for my host. I have done some searching but I haven't found any good example. What are SSHFP records? What does SSHFP records look like? How do I create ...
0
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1answer
33 views

SSH E-mail login alert if SSH port is as NAT

Can you help me with this problem please? How can I set e-mail alerting after SSH login when port 22 is NATed? I use Linux Debian 7. I have used these iptables rules: eth0 - external network, eth1 - ...
1
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1answer
105 views

xterm no longer starting as root user on RHEL6

I am totally stuck even after reading both this and this (if it isn't already obvious I don't have much experience with Linux.) I am trying to install WebSphere 8.5 on RHEL6. Everything was going ...
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0answers
29 views

Mount a dropbox directory without installing the dropbox application

This is most likely to be a duplicate question, but I could not find a simple answer for my problem. My situation is as follows: I have multiple accounts on different computing clusters. I want to ...
1
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2answers
63 views

Having ssh tunneling itself for remote access from a third machine [duplicate]

I am struggling with understanding if and how the following is possible. Say that I have a machine T (target) which I want to access from remote (ideally via ssh). T is behind a router/firewall R ...
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2answers
107 views

How to input a network file using scp to ffmpeg

My problem is this. I have access to a server that hosts many video files, most of them are very large and not well compressed. I intend to make a reduced quality smaller size copy of these on my ...
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0answers
17 views

libpam load pam modules at every connection

I want to reduce ssh connection time, by debugging sshd have found that libpam is loading all pam modules specified in /etc/pam.d/sshd file at every connection. How to configure/modifiy libpam such ...
1
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2answers
59 views

How to inject data at the beginning of a child process's stdin?

TL;DR How can I fix this command line template, which fails when cat (on the client side) contends with ssh prompting for a password? { echo some stuff; cat; } | ssh SERVER cat { echo some stuff; ...
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0answers
29 views

Unexpected “authenticity of host can't be established.”

Few months ago, I logged to server1 and scp files to server2. Now I want to do the same, but after the scp command I get message: The authenticity of host ... can't be established. RSA key ...
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2answers
48 views

Can't access ssh in my VM Centos

My Cento's IP is diferent of the normal. And I cant access it in a ssh command And when I tried access using ssh noting I want to use ssh and samba client, but my IP is diferent. And I have ...
1
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2answers
34 views

How to log out of su and another user

So when I am logged in as a standard user in an ssh session and then su to root, how can I log out of both accounts with a single command? Rather than: root@host:/exit user@host:/exit something ...
1
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1answer
55 views

Can I configure apache to limit access to a directory only from my ssh connection?

I have a virtual machine running a number of websites. All users have access these via the external IP address of the machine. I am running Debian Stable on this machine. I can access the machine ...
1
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1answer
61 views

How can I start tmux automatically in fish shell while connecting to remote server via ssh

I switched from bash to fish shell. I liked it and decided to use it on my servers also. How can I start tmux automatically on ssh connection? I followed this instruction for bash but fish shell is ...
1
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1answer
129 views

Does Public and Private key remain the same for a user or system?

I had requested access to a git repository and it was granted after I gave my public and private keys. ( generated using the common method ssh-keygen -t rsa which gave me : <user> @ ...
1
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1answer
63 views

For loop not getting executed correctly over ssh

I have a script in which I am reading from a csv file where it contains SourceIp, DestinationIP,Source Ports, Destination Ports. First I am reading the sourceIp and trying to do ssh over it (I am ...
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0answers
38 views

Dropbear SSH on Cygwin won't allow passwordless login

I am using Dropbear SSH running on Cygwin, on Windows 7, on a VMware virtual machine, on Windows 8.1. On my physical OS I have Cygwin and I am trying to get passwordless login using openssh on ...
1
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1answer
22 views

Best mechanism for logging in and uploading backup files

I have a server that I want to regularly backup. I create backups with encrypted tar using OpenSSL, and now I want to connect to my home server and upload my backed up files there. I need a ...
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0answers
25 views

How to automatically launch a lxc container on ssh connection?

I'm attempting to setup a system that automatically creates a new sandbox on a ssh login to use as a temporary jump box into my server. So to do this I was wonder how to setup lxc to spin up a new ...
1
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1answer
46 views

ssh connection fails after login at one user

Have server with 2 users - (e.g. - user and root). SSH login to root works corrctly. But I can't login to user - it immediatelly fails with "write failed - broken pipe" after login. ssh -vvv ...
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0answers
24 views

SSH into servers each with different subdomain over one IP [duplicate]

I have several Ubuntu VMs (bridged) behind a router that I want to access remotely. I've also got an nginx reverse proxy that handles the port 80 traffic like this: sub1.example.com -> server1 via ...
2
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1answer
92 views

SSH agent forwarding, multiple hop

I tested this setup with Linux origin machine - everything is the same - only the first hop can use keys from origin machine. Initial problem I'm trying to set up SSH agent forwarding with multiple ...
2
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4answers
196 views

Running bash script on a remote Windows Machine

I am planning to run a bash script on a remote Windows system from my local Linux machine. For this purpose, I will have to log in to Windows machine from the local one and then execute the bash ...
3
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1answer
52 views

Is it possible to remove “ssh://” from git remote's URLs?

I'm used to create some manually-made repositories to push code to my pet server or share code inside my company. I use the URL ssh://user@ip/folder.git to add as remotes to my workspaces. I was ...
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1answer
31 views

How can I tell which ports have been used for reverse SSH tunnels?

I have two machines, client and server. client has created a reverse-tunnel on server with something like ssh -R 12345:localhost:12345 server. When logged into server how could I find ports which ...
1
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1answer
38 views

Can SSH proxy requests from the remote system through my local system to the internet?

I have SSH access to a *nix system over a VPN. I need to install some packages from the distro's repos to that system but that system does not have general access to the internet to reach the repos. ...
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2answers
44 views

Running Commands on Remote Linux Server Using SSH

I am writing a Bash Script wherein I need to run some set of commands on a remote Linux server from my local computer using SSH. I want the results to be displayed on the terminal screen or dump the ...
0
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1answer
23 views

Unable to generate ssh public key when installing Redmine

I am trying to set up a Redmine on my server, and I am following THIS setup guide. I have used this guide before on my VPS and it worked perfectly however on this server I get following error when I ...
3
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2answers
97 views

Execute bash commands over SSH while staying in interactive mode afterwards

Probably it is a weird thing I would like to achieve but: I would like to SSH to a remote host and then execute some bash commands like "alias" automatically to use them afterwards in an interactive ...
1
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1answer
53 views

Why can't I run Gnome apps over remote SSH session?

Logging into a remote host using ssh -X me@host, I successfully run gnome-terminal -e "tail -F /var/log/file" &. When I log off and then try the same thing the next day, I get this: Failed to ...
1
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2answers
78 views

How to find out all the files in other machines using bash shell script?

I am trying to find out which files are in machineB and which files are in machineC. And I need to run my shell script on machineA to figure out which files are in machineB and which files are in ...
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4answers
609 views

Is there a way to check a users SSH key to see if the passphrase is blank

I'm looking to lock down our Solaris 10, RHEL 5, and SLES 11.2 servers. It has come to my attention that some of the users have no passphrase for their SSH keys. Is there a way I can check for this ...
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0answers
28 views

How to add Public IP to Cent OS

I am trying to configure a Public(Static) IP in Cent OS 6.4. For this, I made a copy of eth0(added local IP, so that I can connect the system to Internet) and named it to eth0:0(added Public IP, so ...
2
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4answers
94 views

What are SSH_TTY and SSH_CONNECTION?

What are the SSH_TTY and SSH_CONNECTION variables for? On my Ubuntu system both of them are blank; what values should they have?
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1answer
44 views

Understanding interface forwarding with VPN

I have a server with static IP address that I rented (Debian on it), and I have a server with a server at home which I bought and setup as home server (with Ubuntu Server). What I would like to do ...
1
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1answer
62 views

Single command to login to SSH and run program?

Is there a way to structure a single command to login via SSH to a remote server and run a program on the remote login shell? In the OpenSSH manual, it reads "If command is specified, it is executed ...
1
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1answer
44 views

Security for a web server for multiple people?

I have an apache web server set up where multiple people have their websites hosted, mostly php based websites. The problem is, when these people upload their website files, it has read permissions ...
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2answers
46 views

what is the purpose of -i in front of scp and ssh commands?

What is the "-i" for in the command "scp -i key *username*@address: path 1 *path 2*"? Note: I've seen "-i" used in ssh commands as well.
2
votes
1answer
52 views

How do I fix this strange behavior with ssh, gnome terminal and gnu screen where function keys F1 through F4 are not accepted?

Here is what I am trying to do: open Gnome terminal launches with my command prompt ssh into work via VPN launch screen create two screen windows try to use F3 and F4 as "prev" and "next" with no ...
1
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1answer
124 views

ssh: Read from socket failed: Connection reset by peer

When I try to ssh to a remote host, I get the following error messages: root@cloudstack-server-1:~/.ssh# ssh ubuntu@172.17.4.17 -v OpenSSH_5.9p1 Debian-5ubuntu1.1, OpenSSL 1.0.1 14 Mar 2012 ...
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0answers
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Is it possible to attach `kinit` to the first attempt to `ssh` without a Kerberos ticket?

My university uses Kerberos-based authentication for login to our unix servers. One way to get passwordless login is to run kinit, type my password, and then run ssh@host. For this setup, I do the ...
0
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1answer
51 views

SSH to Linux Container from Other Machine

I am trying to learn about Linux Containers and this is my first encounter with servers, ssh and many other things that I do not know the terms yet. I create five different containers and authorized ...
1
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1answer
22 views

Share config among ssh aliases [duplicate]

I have a bunch of hosts that I set aliases for in my ~/.ssh/config. They are all part of a certain domain that has certain settings: Host apple GSSAPIAuthentication yes ...
1
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3answers
77 views

How do I start a server via ssh and have it run after I log out?

I ssh into a virtual server and start up a web server. Everything runs as expected. But when I close my terminal on my laptop, the process dies on the virtual server. How do I fix this?
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1answer
47 views

I cannot use yum command and ssh after mount drive.(CentOS)

As the title above, I cannot use yum command after I mount like below. mount /dev/xvdb3 /usr Filesystem Size Used Avail Use% Mounted on /dev/xvda ...