All Questions
111
questions
0
votes
0
answers
10
views
Abaqus CAE Fails to Launch via RDP/VNC on CentOS but Works with SSH and Physical Login
I'm experiencing an issue with launching Abaqus CAE or Abaqus viewer on a CentOS system when accessing it remotely via RDP or VNC. The software loads without problems when I log in physically or use ...
1
vote
0
answers
124
views
SCP silently ignored on the remote machine
When I'm trying to copy a file using scp (in whatever direction), there's no error displayed (although the returned $? code is 1), all I can see is the message that normally the REMOTE machine prints ...
- 111
1
vote
1
answer
404
views
Why I get refused when connect my remote host with domain name using ssh?
I added two A DNS records on my domain name whose HOSTNAME is @ and www,
I'm wondering why I get refused when use davidzhu.xyz
$ ssh [email protected]
ssh: connect to host davidzhu.xyz port 22: ...
- 33
0
votes
1
answer
1k
views
Enable ssh in emergency mode for centos 9
I'm trying make a backup system for my Centos Stream 9 headless server by installing a cloned system disk on a newer machine.
No surprise, the newer machine booted into emergency mode (hardware ...
- 149
1
vote
0
answers
676
views
Limit maximum ssh connections per user does not work when shell is /sbin/nologin
I'm having a Centos 7 server and when I limit the maximum connections per user using the config file /etc/security/limits.conf it works just fine. See below an example of my configuration in that file:...
- 111
0
votes
1
answer
95
views
ssh_config auto restored after some time
I need to connect to git using an ed25519 SSH key, but the /etc/ssh/ssh_config only has the entries below for IdentityFile, so I receive error Permission denied (publickey) when accessing the git repo:...
0
votes
0
answers
223
views
Issue with add Multiple user account and SSH key using Bash script
As per our requirement we provided our devloper group: devs:r-x to /var/log/httpd directory.
What is the best way to create a user account (in my case Dev User) in a Group using bash scrip, with the ...
0
votes
1
answer
445
views
Is it possible to grand SSH access (using username and password) to a Centos 7 machine configured with an user using private key to connect?
first of all I am not a system engineer (I am mainly a software developer).
I am working on a Centos 7 machine and I have the following doubt.
Using MobaxTerm client I can access to this machine via ...
- 7,201
0
votes
1
answer
42
views
SSH clients (putty, GCP web) often displays remnants of previous command [duplicate]
I saw it in different SSH clients but can at least guarantee Putty and GCP web-console (SSH in a web browser) have this.
When you scroll your history and then run a previous command - sometime (more ...
- 2,444
1
vote
1
answer
908
views
Launch GUI application on remote host (Linux CentOS 8) via SSH
I'm having some questions trying to run an GUI app remotely from SSH. My Linux skills are limited and I'm having some issues trying to achieve it through the following scenario:
I have a host with ...
- 11
0
votes
0
answers
280
views
Create an SSH user who has permission to access root directory but limited commands
I want to constrain the user to only have permissions for specific commands in Centos but he need to access root directory.
I want to prevent user from removing, restart, shut down
But he should be ...
- 101
0
votes
1
answer
662
views
ssh gives 'Permission Denied' on valid username/password credentials (ssh set to accept password log in)
I have a strange issue on a CentOS 7 machine.
If I login from the console, as two different usernames, I'm able to log in.
However, when I try that same username/password combinations, I get ...
- 1,163
0
votes
0
answers
95
views
ssh a CentOS machine installed in VMWare in different machine
I have installed a Centos7 in VMWare WorkStation in my wife's laptop and we can use putty to login in to the machine and access it from my wife's laptop.
I am trying to access the CentOs7 from putty ...
- 101
2
votes
1
answer
436
views
Create new SSH user and give him permission to an existing directory
Im trying to create new user called svecias and give him permission to connect via SFTP only to existing directory and deeper (/usr/share/nginx/itsupply).
Currently directory is owned by nginx in ...
- 21
0
votes
0
answers
727
views
How can I stop firewalld from interrupting an existing outgoing ssh exec session when it is started or restarted?
I have a java program running on a Centos7 server that continuously "tails" a file on another Centos7 server using the JSch library to run an ssh exec process to run a shell script on the ...
- 1
1
vote
2
answers
3k
views
How can I enable SSH login for this brand new user created on CentOS 7 machine?
I am not a sysadmin (I am s software developer) and I am finding the following difficulty working on a Linux CentOS 7 remote machine of a customer.
I am using MobaxTerm to connect to this machine. ...
- 7,201
0
votes
1
answer
96
views
CentOS8 SSH Public Key auth and Nginx
I have an issue with making SSH pubkey auth work the way I'd like and I don't know if it's possible to make it work or not.
I have a few websites hosted under different /home/$USER. All webfiles are ...
- 3
0
votes
1
answer
796
views
ssh failing on a user with a password that contains special char on the first symbol
When trying to do: ssh -oBatchMode=yes -4 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null
ssh fails when the password of the remote linux user starts with a special char(for example !...
- 1
-2
votes
1
answer
1k
views
Windows SSH into CentOS using Private Key - Not working
I'm on Windows 10. Need to ssh into a Linux CentOS server. Trying both Putty and Windows SSH (turned on in Features.. Powershell?).
Using PuttyGen, I generated a private & public RSA key pair - ...
- 127
0
votes
1
answer
214
views
Cannot ssh and ping into my CentOS VirtualBox
I downloaded the virtualbox image from this website: https://www.osboxes.org/centos/#centos-782003-info I uses CentOS 7.8.2003 I am able to start the VirtualBox but I cannot ssh into it. Then, I ...
- 101
1
vote
0
answers
82
views
Multiple SSH keys on CentOS
Scenario: I have a project using Bitbucket as a remote repo for Git. Local environment is a MacBook Pro, remote (production) environment is CentOS.
Generated a keypair on the MacBook Pro, placed the ...
- 13
0
votes
0
answers
4k
views
SSH connection is immediately closed by remote host after successful login
When I am trying to take ssh of a remote network router, the connection closes immediately after successful login. However, if I send command also with ssh login, like ssh user@remote-ip "command", ...
- 1
0
votes
2
answers
4k
views
Access denied when trying to SSH into VM as root
Starting today, when I try to connect to my CentOS VM as root, using Putty, or indeed any SSH client, I can no longer login. The connection is made, but the login itself fails. I know for a fact that ...
- 113
0
votes
0
answers
159
views
Can't ssh from macbook pro to CentOS installed on a VirtualBox
After executing:
ssh demo@localhost -p 10022 -v
The trace looks like this:
OpenSSH_7.9p1, LibreSSL 2.7.3
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config ...
0
votes
1
answer
42
views
External Access to Server
I've set up a basic CentOS 7 server as an attempt to learn server architecture and maintenance, as well as for personal use. I am currently attempting to set up secure access to the server via ssh ...
0
votes
2
answers
2k
views
xshell - how to display the command line and the result line in different colors?
Could anyone give me some instructions on how to display the command line and the result in different colors.
Currently, they have the same color so it is difficult to read.
I am using XShell 5.
- 1
0
votes
1
answer
646
views
Windows SSH keys on CentOS
I have an internal CentOS 7 server which acts as a staging environment for our websites.
I, for the last year or so via SSH from a Linux Mint machine. Now, some other people are trying to get access ...
- 239
2
votes
1
answer
2k
views
Receiving error when trying to use ~/.ssh/config "ssh: Could not resolve hostname"
I have scoured the internet for a solution, but no solution is working for me!
I am trying to create a bastion server with a public AWS EC2 instance that will connect to a private EC2 instance.
...
- 21
0
votes
1
answer
760
views
SSH to CentOS VirtualBox from PuTtY on an External Windows System
I have created a VM on my personal machine and the VM is running CentOS and I can ssh to that machine from my local Windows 10 machine via PuTty. However, I am not sure of how to ssh to the VM from a ...
1
vote
1
answer
481
views
how do I ssh Linux VM over virtualbox from windows
I spin up a Centos7 virtual machine over Virtualbox and trying to access via ssh from putty over windows from another machine in a same network, below are the details of my VM:
IP addresses:
Windows ...
- 111
1
vote
1
answer
1k
views
SSH agent forwarding mixed with su user -
If I ssh to my server as such:
ssh root@<ip> -A
Then I do this remotely:
ssh [email protected]
# Hi username! You've successfully authenticated
Then this remotely:
su user -
Then this ...
- 261
2
votes
2
answers
382
views
ArchLinux Virtual Machine can only be logged in through SSH after logging in through virt-manager
I installed two ArchLinux virtual machines on my CentOS server with virt-manager on KVM. The ip addresses are 192.168.1.138 and 192.168.1.183. After installation, I installed OpenSSH and copied the ...
- 73
1
vote
0
answers
972
views
Tunnel Gre between two hosts (vps and dedicated server)
Hello guys i need to resolve this problem (all server have installed centos 7): i'm trying to create a gre tunnel through vps (in Italy - OpenVZ) and a dedicated server (in Germany), but they do not ...
0
votes
1
answer
2k
views
Working ssh but cannot use scp. How?
We have this requirement that we may able to communicate with each other by SSH but we cannot copy files from the other computer using SCP.
For example, we have 2 computers, which is computers 1 and ...
- 9
0
votes
0
answers
674
views
How to SSH second user to Linux server (CentOS)
I connect to my DigitalOcean droplet (linux CentOS server) through SSH with root user. It's workin fine without any problem. But when I try to connect to my server through second non root user it ...
- 101
0
votes
1
answer
2k
views
Losing Kerberos Ticket after SSH to Current Host and Exit
I am running on CentOS 7.3.
How may I prevent losing my Kerberos TGT in the scenario below?
I understand the security implications of not destroying Kerberos tickets upon logout, and I will be ...
- 1,049
1
vote
1
answer
849
views
CentOS 7 Virtualbox VM SSH Connection Suddenly Refused
I am new to linux and am working with a minimal CentOS 7 installation on a VM running on Virtualbox with a Win10 host.
Up until today, I was able to use PuTTy and WinSCP to SSH into the VM from the ...
- 11
1
vote
1
answer
708
views
Terminal doesn't show the server name after using ssh - Centos7
Please notice that I don't have any problem with hostname and I can change the hostname by configuring /etc/hostname , and it is easily shown on the terminal.
My problem:
I just setup two servers on ...
- 11
2
votes
1
answer
11k
views
How can I backup remotely the entire Linux server using rsync over SSH?
I own a CentOS 6.9 box
I need to backup remotely my entire CentOS installation to my Rsync.net storage account through SSH.
How would that be possible including incremental updates and excluding ...
- 260
1
vote
0
answers
45
views
Moving files from an SFTP directory
I have followed this tutorial to configure a Centos 7 server using sftp. The tutorial includes hardening the sftp target directory and user.
The sftpuser is able to sftp files to /var/sftp/uploads
...
- 111
0
votes
1
answer
431
views
One SSH key for accessing the server from any operating system
Can I generate one SSH key and then use this key to SSH server from any operating system like mac, windows, sunsolaris or linux command shell?
UPDATE:
I have a dedicated server and I may access it ...
0
votes
2
answers
2k
views
Unable to SSH to LXC Ubuntu container
I'm trying to connect from a CentOS host to my LXC Ubuntu container and it fails with this error:
packet_write_wait: Connection to 192.168.122.92 port 22: Broken pipe
The CentOS I'm using is:
...
- 101
0
votes
1
answer
488
views
Unable to connect to CentOS from Windows server
I'm trying to connect to a CentOS virtual machine from a Windows 2012 server via the Jenkins CI engine. This is the error message I'm getting:
Connection refused: connect
SSH Connection failed with ...
- 101
3
votes
2
answers
131
views
Add ssh key file for linux server - Key generated, then what?
I want to build a CentOS7 server by myself.
Now I already followed the steps mentioned in this link: https://www.digitalocean.com/community/tutorials/initial-server-setup-with-centos-7, which ...
- 33
0
votes
2
answers
281
views
Why can't I access a folder I am the owner of?
I am running a CentOS vm in EC2. I ssh as ec2-user, and want to create a log folder for my application that I am about to deploy:
sudo mkdir /var/log/search-api
sudo chown ec2-user /var/log/search-...
- 187
0
votes
0
answers
274
views
How do I remove el7 and it's packages on CentOS 6.9?
I'm trying to install Centreon from ssh and I got this error:
Error: Package: centreon-clib-1.4.2-3.el7.centos.x86_64 (centreon-stable)
Requires: libstdc++.so.6(GLIBCXX_3.4.15)(64bit)
Error: ...
0
votes
0
answers
125
views
CentOS Server network is accessible but terminal not responding
I run a CentOS7x86 Server.
The follow problem happens so frequently but I got no clue where to look at.
Run Server
Run some docker containers (Jenkins, gitlab ...)
It looks fine, but several days ...
- 687
0
votes
1
answer
657
views
Yet again confused why ssh key auth does not work from WSL on W10 to my Centos 7 server
I have ssh keys generated, I have pubkey authentication uncommented and set to yes in my /etc/ssh/sshd_config file. Anyone see anything I am missing/don't understand in my config? Makes me sad to type ...
- 428
33
votes
5
answers
140k
views
Where to find SSH Login log files on centos
I have shared a .pem file with few a developers and now something went wrong on the server. I would like to track logins in a log so that I can see who (IP) made changes and when (if even possible) ...
- 433
0
votes
1
answer
2k
views
SSH not working on first attempt
We are having an issue with some of our Linux CentOS machines whereby SSH won't connect on the first attempt. If you start a session, wait 5 seconds then restart the session it works fine and ...
- 67