SSH (Secure SHell) is a protocol for running commands on a remote computer.
2
votes
1answer
94 views
Getting no tty present and no askpass program specified when using git over ssh
I'm trying to push a git commit from my laptop to my server but keep getting the following error message:
remote: sudo: no tty present and no askpass program specified
To ...
1
vote
1answer
27 views
How to troubleshoot failed X11 forwarding with ssh?
When I try to establish an X11-forwarding connection to myserver, I get the following error:
% ssh -X myserver xlogo
X11 connection rejected because of wrong authentication.
X11 connection rejected ...
16
votes
3answers
4k views
Restricting an SSH/SCP/SFTP user to a directory
Is there a simple way to restrict an SCP/SFTP user to a directory? All methods that I've come across require me to set a chroot jail up by copying binaries, but I don't think that should be necessary.
...
1
vote
1answer
70 views
SSH disconnects when screen locked with vlock
I'm using tmux + PuTTY to get all the UNIX goodness I need when using Windows. I have the following settings in my .tmux.conf:
set-option -g lock-command vlock
set-option -g lock-after-time 1800
As ...
0
votes
2answers
26 views
can't update with this error messg
I got this message:
not enough free disk space.... The upgrade needs a total of 31.8 M
free space on disk '/boot'. Please free at least an additional 31.8 M
of disk space on '/boot'. Empty ...
1
vote
2answers
160 views
Use socks proxy for commands in terminal
I connect to a remote ssh server by running this command:
ssh -D 12345 bob@myserver.com
This creates a socks proxy that I can use with Firefox to bypass censorship in my country. However, I can't ...
1
vote
1answer
116 views
Passwordless ssh on archlinux (after ssh-copy-id still prompts for password) [duplicate]
On ubuntu/mint, all I need to do for passwordless ssh login is:
ssh-keygen -t rsa # on both pc
ssh-copy-id targetpc
ssh targetpc # does not prompt from password anymore
and that's all..
I do the ...
2
votes
2answers
69 views
End process from another SSH window
I forgot to use screen and I have a task that has been running for quite some time, and I do not want to lose the saved data. Basically Ctrlc will end the task and save the data if I am on the same ...
0
votes
2answers
46 views
DenyHosts and no-ip.com
I recently installed DenyHosts and after a few remote logins I noticed that sshd: 8.23.224.110 had been added to the host.deny file after /var/log/auth.log showed a few sshd: Did not receive ...
3
votes
2answers
72 views
Grant ssh access for single session
I wonder if there is a tool/modified ssh-server/ssh option which enables me to grant ssh access for a single session to a given user. What I want to avoid is creating a user account and password for ...
0
votes
2answers
45 views
scp hangs on SSH2_MSG_SERVICE_ACCEPT received
I frequently scp my file to remote host. But suddenly it started taking more than 30 seconds to copy 20kb file.It used to take not more than half a second.
After referring to some blog I appended
...
2
votes
2answers
475 views
Can't do SSH public key login under encrypted home
I can't do ssh public key login to my server and I think this issue is related to the fact my home is encrypted. I chose the option "encrypt my home folder" under the Ubuntu install setup. The ...
1
vote
0answers
61 views
preventing the screen from being cleared when exiting an ssh session
I have rdist set up to push out some of my dot files to all the remote machines that I need to ssh into. I also have zsh as my default shell on all of those machines.
When I ssh into a machine and ...
2
votes
1answer
110 views
Restrict two way SSH and Apache authentication to non-local networks
I am using Google's open-source PAM module for two-way authentication for SSH logins and certain Apache directives. It works great, however I would like to use this only when trying to log in from an ...
0
votes
1answer
130 views
Unable to login to my server using ssh
Yesterday I was migrating to my new server, needed to use rsync, I created a RSA key, so that rsync could connect, I saw an error that says add to trusted key in location x I didn't have that location ...
6
votes
5answers
3k views
Copy input to clipboard over SSH?
Here's my usage case:
I'm often connected to other computers over SSH for work and I often need to copy and paste documents/text from the server to locally running editors for writing examples and ...
0
votes
2answers
79 views
Transfering files using ssh
I've found the following command pretty convenient for transferring files to servers I have ssh access to:
cat myfile.txt | ssh my.host.edu "cat > myfile.txt"
Is there a similarly convenient ...
8
votes
3answers
3k views
Given keys in ~/.ssh/authorized_keys format, can you determine key strength easily?
~/.ssh/authorized_keys[2] contains the list of public keys.
Unfortunately, each public key does not specify the key strength ( number of bits ).
Is there a utility that can process this file line by ...
0
votes
1answer
73 views
non root ssh keys help
I'm having issues setting up a different CentOS account with its own pair of SSH keys.
I have created the required files but when connecting with Putty it says Connection refused, here's the putty ...
3
votes
1answer
151 views
How are loaded SSH keys referenced by name?
I'm using chef's knife ec2 tool which requires the name of a loaded SSH key (that was created in the Amazon EC2 control panel)
It seems strange to me that it uses a name to reference the keypair - ...
0
votes
2answers
1k views
ssh root@localhost error; help me hack this box :)
I need to gain a root shell on a linux vm for a security class. I have a user account on the system and a means to write to any file (i.e. /etc...) and want to escalate my privileges with:
ssh ...
2
votes
1answer
93 views
How to list keys added to ssh-agent with ssh-add?
How and where can I check what keys have been added with ssh-add to my ssh-agent ?
0
votes
1answer
33 views
Copy modified files from one server to other
Scenario:
2 Servers (*.12 and *.13)
CakePHP "application" on both of them.
*.12 is "Production" Server
*.13 is "Development" Server
Now i want to copy all files modified the last 2 days from test ...
3
votes
1answer
148 views
scp and compress at the same time, no intermediate save
What is the canonical way to:
scp a file to a remote location
compress the file in transit (tar or not, single file or whole folder, 7za or something else even more efficient)
do the above without ...
0
votes
0answers
49 views
Why can't the sudo user overwrite files by SFTP?
What permission is needed to let user (sudo) overwrite the files on my VPS over SFTP?
2
votes
1answer
97 views
How to password-less log on via ssh alias
Suppose I have access to pc via a server. I can directly log-on to pc by using How do I connect to a pc through another pc using ssh
Such that my .ssh/config looks like:
Host short
Hostname pc
User ...
13
votes
1answer
6k views
ssh-add complains: Could not open a connection to your authentication agent
I've been trying to get ssh-add working on a RaspberryPi running Raspbian.
I can start ssh-agent, when I do it gives the following output into the terminal:
...
1
vote
1answer
115 views
How to put value of echo pipe netcat commands into variable [duplicate]
I have this command succession:
echo -ne "/dev/shm/test.sh" | netcat 89.196.167.2 4567
and let's say it return a string like, for example "Hello...bla".
(on the 89.196.167.2 i have made a server ...
0
votes
0answers
56 views
Local host always being added to /etc/hosts.deny when trying to SSH
I have a rather odd problem with my server. For some reason the local hostname for my workstation keeps getting added to the /etc/hosts.deny and when I try to SSH I get:
ssh_exchange_identification: ...
0
votes
2answers
95 views
Automated ssh-keygen without passphrase, how?
I would like to make an automated script that calls ssh-keygen and creates some pub/private keypairs that I will use later on. In principle everything works fine with....
ssh-keygen -b 2048 -t rsa -f ...
1
vote
1answer
43 views
doing an rsync across multiple machines
I have the following setup: Machines A, B , C running linux. I have to do a continuous rsync from machine A to machine C and have a script for that. However, the access to machine C from machine A is ...
0
votes
0answers
19 views
Using rsync without adding ssh user [duplicate]
How to give an user access to rsync (as www-data user), without giving him an ssh user (because i afraid that he could do something with my computer), how can i do this?
0
votes
3answers
397 views
How can I share files between two Linux machines over LAN?
I am currently running Fedora 18 with Gnome on two computers which are connected to the same router. I have been using Samba to share files between the two, but I know there must be a better way.
On ...
3
votes
4answers
5k views
Can a linux user change their password without knowing the current password?
I'm setting up a few ubuntu boxes, and using opscode's chef as a configuration tool. It would be fairly easy to install public keys for each user on each of these servers, and disable password ...
1
vote
2answers
142 views
How to transparently monitor SSH access/network traffic in Gentoo/general linux?
What's the most effective way to monitor SSH access in Gentoo Linux?
My Gentoo box is operating locally behind my broadband router. I have SSH port forwarding on the router and a DNS entry pointing ...
1
vote
2answers
114 views
Connecting to host by SSH client in Linux by proxy
I am really struggling with this.
My host (A) is behind a proxy/firewall (PF) and needs to connect to
host H.
The proxy has HTTP/FTP/SOCK proxy configured and I have no issue to configure in ...
0
votes
1answer
28 views
How to identify which application is trying to access the unixbuild server?
The error message I am seeing is:
Failed publickey for raj from 10.*.*.** port 34355 ssh2
Mar 18 05:22:34
unixbuild sshd[16956]: [ID 1000034 auth.info] Failed password for raj from 10.*.*.* port ...
-1
votes
1answer
57 views
SSH File Transfer
Is it possible for me to use SSH to transfer files from my linux computer to my macbook, if so, can anyone post a brief tutorial? I kind of understand how to use SSH, but I need to know how to find ...
2
votes
2answers
4k views
sshfs always asking for password in fstab?
I'm trying to enter an sshfs mount in /etc/fstab with the following line:
sshfs#oli@192.168.0.2:/media/usb0 /media/ExtHD fuse defaults,nonempty,allow_other 0 0
So that this volume is mounted at ...
2
votes
1answer
102 views
SSH via Corkscrew to a remote server not working
I am trying to SSH to a remote server from my college network (proxy). However, I am getting this error whenever I try to SSH to the host
ssh_exchange_identification: Connection closed by remote host
...
2
votes
1answer
54 views
Configure SSH keys for production and DR server
Here is the case, we have successfully configured SSH keys (and hence password-less SFTP connection) between ProdServer-A to ProdServer-B. It works, or so I thought still yesterday. Yesterday ...
-2
votes
1answer
56 views
How to fetch logs from diffrent servers using one command? [closed]
How to fetch logs from diffrent servers using one command?
For example, suppose I want to fetch logs for same id in different servers.
I have to go to each server and search for logs.
Is there any ...
12
votes
2answers
421 views
(SSH) Is it dangerous to close terminal without “exit”?
This happened many times.
While the SSH active, I'm so tired and just close the terminal without exit
Is it dangerous to doing like that?
2
votes
2answers
61 views
Remote access SSH problem
I have been asked to setup a lab with 1 PC (fedora 18 OS) and 4 SGI (IRIX 6.5 OLD OS).
I am using a switch to connect them to university's network, and I asked tech guys to assign static IPs to them. ...
0
votes
1answer
47 views
SSH -L Tunnel no longer working
Local machine running my scripts needs to access a remote server's DB.
Last week I could do, on the local machine
ssh -f -N -T -L1081:localhost:3306 ueser@remoteserver -p2222
on the local machine:
...
1
vote
2answers
82 views
SSH client side problem: hanging and timing out on some hosts
From my laptop I'm trying to connect to HOST1 and I get:
$ ssh -vvv user@HOST1
OpenSSH_6.0p1 Debian-3ubuntu1, OpenSSL 1.0.1c 10 May 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: ...
5
votes
2answers
313 views
Prevent SSH client passing TERM environment variable to server?
I'm currently using Fedora 18 gnome-terminal, then started tmux multiplexer in it. After I connected to a CentOS 5 server via ssh command, I find:
ls result has no color
tmux, screen, hexedit, htop ...
1
vote
0answers
43 views
Why isn't hydra being disconnected?
I have SSHD running on port 5800 on some machine. (It is a my machine at home.)
If I run this manually in a terminal:
# ssh someIP -p 5800
The connection is lost because I am disconnected after 3 ...
1
vote
0answers
55 views
ubuntu:terminal+ssh+vim, resize
Background:
OS:ubuntu 12.04
Display: two, one is laptop, and another is a extended monitor, which is bigger.
Problem:
Open a gnome-terminal in the bigger display, and log on the remote Linux ...
1
vote
2answers
49 views
ssh_exchange_identification: Connection closed by remote host
OpenSSH_5.9p1 Debian-5ubuntu1, OpenSSL 1.0.1 14 Mar 2012
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: ssh_connect: ...
