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

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2
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2answers
882 views

Help updating OpenSSH to v6.6

My system is vulnerable to OpenSSH Wildcards on AcceptEnv Vulnerability, CVE-2014-2532. I have tried to update openssh to version 6.6 for centos but I can not get repository[sic] for that version. ...
1
vote
1answer
41 views

Throttle accounts after failed SSH login attempts

I have to set up a server that will allow remote logins. Obviously security is an issue. In this first pass we are discussing:- Locking a person for 15 minutes if they fail to login correctly three ...
15
votes
1answer
9k views

sshfs mount, sudo gets permission denied

I am using sshfs to mount a folder with some python projects over ssh to my ~/ directory. $ mkdir -p ~/mount/my-projects $ sshfs user@example.com:/home/user/my-projects ~/mount/my-projects I can ...
4
votes
2answers
2k views

SCP Lost Connection

I can successfully connect to my server via ssh but when trying to run the scp command I get a connection time out. $ scp ~/.ssh/id_rsa.pub root@192.168.12.2:id_rsa.pub ssh: connect to host ...
20
votes
2answers
5k views

Using an already established SSH channel

I have an already established ssh connection between two machines. Is there a way to send commands to the remote machine from a shell script that is run on the local machine, using the already open ...
1
vote
0answers
33 views

Setup SSH tunnel on existing connection from script

I want to establish an SSH tunnel on an existing connection. The tricky part is doing it from a script (a custom shell I need to allow users only some specific things, like setting up this tunnel). ...
2
votes
1answer
1k views

How to change ssh log location from /var/log/secure to custom location in rhel 6?

By default in RHEL 6, SSH server logs are sent to /var/log/secure. I want to change this location to a custom one. Is it possible to do that? I have tried modifying the rsyslog.conf file, but it does ...
1
vote
2answers
86 views

How do I automate opening Firefox over an ssh tunnel?

My university has access to some academic journals that I cannot access from home. To be able to download papers while I am away, my current proccess is: Create an ssh tunnel to my university ...
1
vote
2answers
36 views

Host key verification failed.#015

I am trying to execute a script on a remote computer. Lets call this (Secondary), the script is as follows, for simplicity porposes, #!/bin/bash echo "This is the Remote Machine (Secondary)" > ...
0
votes
0answers
28 views

Difference in the permissions of the file created by SSH and SFTP

I have a question and want to know how can I fix it so that the files created by SSH and SFTP by always have the same permissions in the case is 0644 for files. It is possible to make the permissions ...
2
votes
1answer
64 views

SSH public keys not working; my home directory is encrypted

I installed Ubuntu LTS 14.04 server edition on a remote computer, and added my local public key to ~/.ssh/authorized_keys on the remote computer. I found that I still needed to use password to log in ...
7
votes
4answers
19k views

rsync without prompt for password

I need to execute rsync, without it prompting me for password. I've seen in rsync manpage that it doesn't allow specifying the password as command line argument. But I noticed that it allows ...
0
votes
1answer
28 views

Modify username in ssh

When ssh into my home router, I use the admin credentials provided by my isp. How do I list all users along with their details (group/privilege) and as the superuser how do I modify their (and my) ...
-3
votes
1answer
52 views

Help needed with ssh! [closed]

I am new to the linux OS and the other day, I was reading about ssh. What I wanted to do is Write a shell script to open terminal on 2 PCs simultaneously (the other PC being the guest OS (ubuntu) ...
3
votes
3answers
877 views

How can I set default settings for htop?

Occasionally, I need to check resources on several machines throughout our data-centers for consolidation recommendations and the like. I prefer htop, mostly because of the interactive feel and the ...
2
votes
1answer
550 views

Chroot gone wrong, can't ssh with user

Distribution: Scientific Linux 6.5 (Carbon), not exactly your typical brand of linux. Tried to chroot a user using these instructions for SSH and quite obviously failed, and now I can't even log in ...
4
votes
4answers
7k 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 ...
0
votes
1answer
37 views

Linux Debian strange putty connection

I have just installed Linux Debian 7.8 on my VMWARE. Installed SSH and SSH-Server. I'm able to connect via putty with the local IP (192.168.x.x). When I try to connect from another computer after ...
1
vote
1answer
20 views

How can I configure Linux to reopen my SSH tunnels after the connection has been restored?

I am currently working with some SSH tunnels configured. Many times when I loose connection to the Internet or hibernate my laptop, I need to reconfigure the tunnels (i.e., do killall ssh and then set ...
2
votes
2answers
53 views

menu script over ssh

I have a script that asks for input from the user. When I run this locally it does what I want however I'd really like to run it over ssh. I've tried the regular ways I'd run a script: ssh ...
6
votes
2answers
940 views

Detecting SSH agent forwarding

How can I find out whether an SSH connection has been established with or without agent forwarding? I'm trying to do the following: ssh-add -D (delete all stored keys) ssh --vvv something ssh-add ...
0
votes
1answer
25 views

Why can't I see the output of scripts ran using ForceCommand in sshd_config?

I set up sshd_config with ForceCommand /path/myscript.sh for the user "tester": myscript.sh: #!/bin/sh echo test1 echo test2 | tee -a /home/tester/test.log The script is executed properly on login ...
0
votes
2answers
87 views

Shell script for ssh into a Unix/Linux server from MacOS X 10.10

I am attempting to ssh into a server by using a bash script from MacOSX. #!/bin/bash spawn ssh username@gatewayserver expect "password" send "Mypassword\r" interact spawn ssh ...
1
vote
0answers
26 views

Restrict SSH access to git usage only

Using: ssh-keygen -O force-command="/bin/restricted-command", or command="/bin/restricted-command" at the beginning of an authorized_keys line one can force a key-based SSH connection to execute ...
0
votes
2answers
507 views

SSH failed public key authentication

I have a server, and I want to be able to SSH in with two different users. I have setup public key authentication for the first user, and it works just fine, however, I can't login with the second ...
0
votes
2answers
555 views

tmux with iterm2 attach a remote session

I'm using the Tmux integrating with ITerm2, which can create a tab in ITerm 2 for each window created by Tmux. But somehow this doesn't make much sense for the usual SSH scenario, where we first SSH ...
2
votes
2answers
90 views

Installing SSH via Cygwin

I have a laptop with windows 8. I'm trying to setup SSH from this laptop to a windows 2012 server via Cygwin64. I followed the steps as described here. However, when I am at the step: ...
1
vote
1answer
34 views

“Permanently added the RSA host key” what does it mean?

I'm very new to Unix and things around it, particularly for this question is SSH and authentication. I know that I can create identities (create a pair of public/private key), put it into ssh-agent ...
2
votes
1answer
52 views

ssh and run script on remote host and answer expect answer automate

The ssh from server0 to (server1,server2,server3) (no password need to SSH (trust exists between all servers and private key exists on all servers)) but a remote script on server (server1,server2 ...
1
vote
1answer
45 views

I want to create a cron job that runs a command on a remote linux box using ssh but I want ssh to answer password [duplicate]

Thank you for the reply.This is not what I am after. The ssh from server 0 to (1,2,3) (no password) but a remote script on server (1,2 & 4 ) which starts a service/application needs a password for ...
2
votes
1answer
20 views

GPG agent doesn't remove my SSH key from the keyring

I have a really troubling problem. I can't get gpg-agent to remove my SSH key from its keyring and it even persists there after many reboots. $ ssh-add -D SSH_AGENT_FAILURE Failed to remove all ...
0
votes
0answers
13 views

Eclipse over X11 forwarding is not showing all icons/assets

I have a virt running RHEL5 which has Eclipse installed on it. I'm using ssh -Y to start eclipse on my Ubuntu host. My problem is that not all assets in Eclipse seem to be shown. Some of the menus ...
0
votes
0answers
38 views

firewall-cmd doesn't work when called through OpenVPN connection, why not?

I recently set up OpenVPN to run on a remote CentOS 7 server. Once I establish an OpenVPN connection to the remote server from my local machine, I am able to ssh through the VPN tunnel with ssh ...
2
votes
1answer
100 views

Cannot ssh into a fresh install of CentOS minimal on lan

I've downloaded CentOS 7 Minimal and installed on an old laptop. I want to be able to ssh to the machine from other machines on the same lan. But I keep getting this error .. ssh: connect to host ...
28
votes
7answers
5k views

My server is constantly being attacked [closed]

I am fairly new to the system administration world. I've been working on an application recently and when I check my application server logs, I constantly get various IP addresses trying to ssh into ...
1
vote
0answers
22 views

How to set gnome-terminal to the remove server name without touching PS1? [closed]

There are various servers with various OS, we cannot touch the PS1 of them. There is a "sysadmin" notebook, having CentOS 6.5/GNOME, so using gnome-terminal. We log in via SSH to the servers in ...
19
votes
3answers
13k views

Why SSH takes a long time to Connect

I have noticed that some Linux Servers in Network takes long time to connect using ssh. Situations: There are two situations I have faced: On some servers some times it takes a long time to ask ...
1
vote
1answer
25 views

Transfer file from remote computer without console

I need help to transfer file from remote Server A to server B (login to B with Terminal (putty)), but I also need to do that in background (so I can close terminal and move away). What have I tried is ...
1
vote
1answer
35 views

Play crawl-tiles over SSH from Windows with PuTTY

I have a headless Raspberry Pi running PiBang (swapping to Raspbian soon since PiBang is no longer supported) which I'd like to play Dungeon Crawl Stone Soup over ssh. When I try to run crawl-tiles ...
3
votes
1answer
49 views

A consistent and safe approach to passwordless accounts with SSH

I must admit that I like servers without passwords in some cases. A typical server is vulnerable to anyone who has physical access to it. So in some cases it is practical to lock it physically and ...
4
votes
5answers
255 views

Open file from remote computer on host computer

I'm trying to edit a file from a remote computer connected via ssh. How can I open the remote file on my local computer to edit?
2
votes
0answers
19 views

What's the approximate data scale that an ssh session will consume?(without file exchange)

When traveling during holidays, sometimes I need use my mobile as a WiFi hotspot to let my notebook connect to server to do some task. Then a question comes to my mind: How much web data will be ...
1
vote
2answers
56 views

Copy files to multiple computers over LAN

Good day, I am pretty new to Unix and I need to do this simple task. I have a few files, let's name them file01, file02, file03 etc. and I need to copy each of them to one computer from a list. The ...
1
vote
1answer
55 views

How to pipe scp/ssh file transfer(pull) through tar (remote->local transfer initiated from local machine)

I would like to pipe an scp pull operation(sample without tar below) through tar, so that only one tar file is written for about 10 directories: user@localhost:/home/user> scp -r ...
1
vote
1answer
24 views

Running process on a remote browser

I work on remote machine using the ssh protocol. I try to test a tool which is a process running on the port 5000. Code: tcp 0 0 0.0.0.0:5000 0.0.0.0:* LISTEN ...
0
votes
3answers
1k views

SSH public key authentication works on LAN and not from WAN

I've setup my SSH server to use public key authentication. When I connect to my server on local network, it authenticates. But it doesn't when I connect over the internet. I don't think the problem ...
14
votes
3answers
11k views

What difference between openssh key and putty key?

I've found ssh-keygen ("ssh" package) comand produce another keys that puttygen command ("putty" package). If I create public and private keys with ssh-keygen some ssh-servers can not accept my keys. ...
2
votes
5answers
6k views

SSH XForwarding fails - xauth bad display name

I'm trying to setup XForwarding over ssh, but it fails. The same result happens whether I use the argument -X or -Y for ssh. The error I get. a@ASUS-N53SM:~$ ssh -X -p 6623 pinker@192.168.0.200 ...
28
votes
6answers
38k views

Uploading directories with sftp?

I'm having some trouble uploading directories(which contain other directories a few levels deep) by sftp. I realize I could work around this by gzipping, but I don't see why that's necessary. Anyway, ...
3
votes
2answers
51 views

Seeing file names in SCP

I'm using scp to copy files from a remote server to a local one. What's really uncomfortable is that I need to type the file path precisely. I'm used to relying on autocompletion, because file names ...