Secure Shell (SSH) is a protocol primarily for encrypted shell connections. This tag is also used for questions about sshd and openssh, the two standard applications for using SSH.

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Kerberos on Centos 6 systems accessed via PuTTY?

So I have a bunch of servers running Centos 6, I've recently been playing around with Kerberos on a VM to figure out how to set it up and run it on my systems so that we can get rid of using passwords ...
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0answers
19 views

SSH key not authorizing, log says 'possible break in attempt'

I've followed the steps that everyone says to set up ssh key authentication. Make the authorized_keys file on the server in .ssh from the .pub file, set permissions on the file and the directory. ...
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0answers
11 views

SSH over WAN to server in VPN

I have a server that is sometimes in a VPN and sometimes isn't and a client that wants to ssh to it using a public domain name. When the server is in the VPN, sometimes the client can't ssh to it. ...
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1answer
33 views

Can't ssh, permission denied

I have created new user using useradd USER, but I can't SSH to the server and login with it. I already have another account to which I can SSH easily. Running ssh -v USER@domain.tld is returning this ...
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0answers
25 views

Solaris - SCP without a password not working

I have created a key pair on my source server using ssh-keygen -t rsa accepting all defaults (no passphrase etc) as the root user and then copied the contents to the remote server authorized_keys file ...
-1
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0answers
15 views

Scheduled execution of files over network

forgive my ignorance as I'm a Mac user and have been out of the Windows world for a long time. I am looking for direction on how I might be able to achieve the following: Have a windows computer ...
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3answers
20 views

Amazon EC2 Security Group inbound rule with a dynamic IP

I'm looking for clarification on what I see as a potential problem with EC2 Security Groups. I'm setting up a Security Group for connecting to linux instances. I've created "anywhere" rules for HTTP ...
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votes
2answers
31 views

Using same port for http/ ssh on two ip's [on hold]

How could use two diferent services using the same port on two diferent IP addresses? Example: IP 1 : 192.168.10.10: Service: Http Server Ports: 443 IP 2 : 192.168.10.11: Service: SSH Server ...
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2answers
26 views

Cannot ping / ssh server after installing VirtualBox on CentOs 6.6 [on hold]

Our server was running fine this morning. I installed VirtualBox and rebooted the server. Since rebooting the server I do not recieve a response when pinging the IP address and I cannot connect ...
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1answer
30 views

Does Git has built-in SSH server? [on hold]

I'm trying to setup Git's remote SSH server to access this using SSH, but I haven't found any info how to make this. So, does Git has built-in SSH tools to establish such connection to use this ...
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4answers
104 views

How can I limit SSH access to my own 2 IP addresses? [on hold]

I am getting > 100 attempted logins per minute in my /var/log/auth.log so a quick search online on how to limit SSH access to a particular IP address lead me to a question and answer on here. However ...
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1answer
19 views

ssh How dose a second user log in with a ssh key file?

I am new to VPS, I have linux centos 6 and have followed instructions here to get started. I have create ssh key for the root user from instructions here I have disabled root log in and created a ...
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0answers
56 views

Why can't my root user log in to ssh anymore?

I recently add a new system user and now my root user can no longer log in via ssh. My /etc/ssh/sshd_config is below. cat /etc/ssh/sshd_config # Package generated configuration file # See the ...
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0answers
13 views

SSH Connect to hosts by using tunnel [migrated]

I want to ssh connect from host A to host C directly with one ssh command. +---+ +---+ +---+ | A | -> | B | -> | C | +---+ +---+ +---+ Host A already have keys ...
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0answers
15 views

Occasionally encounter error “ssh_exchange_identification: read: Connection reset by peer”

When I try to connect a remote Linux server using ssh, sometimes I got the error ssh_exchange_identification: read: Connection reset by peer while other times I can connect to the server successfully. ...
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1answer
28 views

How to enable ssh access without public/private keys [closed]

I want to access my server via terminal like this: ssh username@host.com Password: (enters password) ... I have access to cpanel for this server. There is a section called "SSH access" where I can ...
0
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1answer
26 views

SSH: How to get the list of servers that autocomplete when hitting tab after ssh?

When I tab complete after typing ssh, I get a list of servers that I can ssh into. How would I get that same list with a single command? The pseudo command would be: ssh --list-available-servers ...
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0answers
22 views

Putty SSH connection timed out but OVH KVM ok

I dont know why today SSH give me an error but i can ping server and connect to SSH via OVH panel with KVM I reboot my server, load new config in putty, change try alive option to 200, change user ...
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1answer
22 views

Restrict access to .ssh folder over network shares

I run a small server running Ubuntu Server 14.04 and have just noticed that the .ssh folder in the users home directory is accessible via SMB and NFS. The SMB and NFS are both secured, however I ...
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0answers
10 views

After a while cannot ssh to amazon aws ec2 machine

I've read several similar questions, and checked my username is ubuntu as I'm running ubuntu instance, my pem key is 400 permissions and .ssh folder is .600 ssh -i ~/.ssh/my-key.pem ubuntu@myserver ...
0
votes
1answer
18 views

Add SSH user with sudo privilege, using pubkey

I need to add an account for someone to be able to SSH into my server and have sudo privileges. He has given me his pubkey which is something like: ssh-rsa AAAAfbfi40fdsfodudksjflksjdf..... ...
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2answers
23 views

Running ssh/netcat in the background

I'm trying to run a network throughput test between an OS X and a Linux host. I'd like to be able to measure the sustained throughput from the Linux host to the OS X host over time. I'd like to wrap ...
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1answer
41 views

How can I find my Teamviewer ID via SSH? [duplicate]

So I tried doing this command root@server:~# teamviewer --info print version, status, id TeamViewer 10.0.35002 teamviewerd status teamviewerd start/running ...
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votes
2answers
24 views

Is it possible to have two host identifications for a single domain?

I'm running a docker container that expects SSH traffic on port 22. The host machine also expects SSH traffic, but on port 2222. While SSH-ing on port 2222 works without hickups, my SSH client ...
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1answer
37 views

How to use two ssh daemons on one server using nginx or haproxy

First of all, I am new to haproxy and nginx. I would like to know if it is possible to use nginx or haproxy to receive all ssh requests, and forward them to two different ssh deamons based on the ...
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0answers
34 views

My CentOS 6.x server terminate SSH Access after login [closed]

I change the server /etc/security/limits.conf to unlimited. After that can´t login to SSH. I found the issue here: Now, my question is, my host provider put the server in recovery mode, but I dont ...
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votes
1answer
40 views

How can I route SSH traffic based on a subdomain? [duplicate]

I have a home server running ubuntu 10.04 that is running two services: an SSH service a dockerized gogs service I would like to essentially reverse-proxy incoming SSH connections based on the ...
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0answers
27 views

How do I install OpenSSH 6.7 or 6.8 via Putty? [closed]

Long story short, I need one of my sites to be PCI compliant and one of the modifications that I need to do to it is to install OpenSSH 6.7 or higher. I found a tutorial for installing version 6.1 ...
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votes
1answer
14 views

Specify forwarded port to be used in authorized_keys

My Current SSH Situation. I got a few SSH Clients and an SSH Server. I deploy an autosshserver.script to the clients. The script creates a reverse SSH tunnel (plus it forwards port 22 and 5900) to ...
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0answers
25 views

fail2ban wont ban ssh from local hosts

I'm trying to configure fail2ban to block ssh from a local hosts. Fail2ban is install on CentOS 7 with firewall (Linux 3.10.0-229.4.2.el7.x86_64 x86_64 ). I have copied the jail.conf to jail.local i ...
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votes
1answer
24 views

Setup Tunnel via ssh and use it's Internet for VPN clients

I have two VPS centos 6.6 x64 with Public IP addresses example:1.1.1.1 and 2.2.2.2 VPS with 1.1.1.1 is a VPN server I Need to connect 1.1.1.1 via ssh to 2.2.2.2 so My VPN clients on 1.1.1.1 can Have ...
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0answers
27 views

How do I to run a python script only once on multiple machines remotely? [closed]

I have a deployment scenario where I need to run a python script on multiple Linux machines. The script will then download and install software from cloud. Since it is downloading and installing a ...
0
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1answer
20 views

ssh session stuck after some time of iddleness

I'm using fedora 19 and bash 4.2.53(1)-release If I leave an ssh connection opened for some minutes and don't do anything with it, the terminal get stuck. Here's netstat's output: tcp 0 ...
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3answers
69 views

Host key verification failed even though known_hosts is correct

I am running a Debian 7 Wheezy server and are having problems with connecting to other servers over SSH. This problem only occurs while running SSH through crontab, and not otherwise (logged in as the ...
7
votes
1answer
457 views

Copying SSH IDs between servers

Is it good practice to copy SSH IDs a la ssh-copy-id between remote servers in production, so that they can perform various SSH tasks with one another easier? In particular, I'm setting up SSH ...
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1answer
22 views

which port is used on nagios check_nrpe, is the ssh connection is must between nagios master and client server

I have configured the nagios master server and nagios client servers, still after lot of debugging i couldn't achieve the communication btwn these two :( i am getting this generic error CHECK_NRPE: ...
0
votes
1answer
17 views

How to manage access to nodes in a cluster?

I am about to set up a server cluster for our company's web applications. At the beginning there will be 3 hardware servers in Proxmox HA setup in a remote datacenter running about 20-30 VMs all ...
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0answers
32 views

Disabled ssh root logins without creating a new user. Centos 6

I am new to VPS hosting and was informed that I should disable root ssh logins. I have done that by following instruction online but my problem is I stupidly didn't create myself a new user for me to ...
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0answers
34 views

Can not ssh to openstack instance using floating Ip address?

I've setup openstack using http://docs.openstack.org/developer/devstack/guides/single-machine.html machine has single Ethernet Port Eth0 With ip address 192.168.1.22 and i've created instance which ...
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votes
0answers
14 views

scp copy from one server to another in background [duplicate]

I was trying SCP from one external server to another and I understand that completely but how can I do this in the background? My files are like 100 Gb and I really don't want to wait around for it ...
1
vote
1answer
37 views

SSH fails often when contacting VM from remote machine

I have a Windows 8.1 Host in which I installed ubuntu server 15.05 in a virtual machine. I set an SSH server in the guest (ubuntu) and then I create a forwarding rule from the host port 2222 to the ...
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1answer
71 views

Dropbear equivalent to rsync with ssh proxy command

I am trying to guess the dropbear equivalent to this regular rsync command (using ssh with a proxy) rsync -avz --delete -e "ssh -o 'ProxyCommand ssh user@proxyhost exec nc %h %p 2>/dev/null'" ...
0
votes
1answer
21 views

SSH and SSHFS not completely connecting

I'm trying to connect between an Ubuntu and CentOS and reverse. From both sides I get black screen where I can press enter but nothing happens, not being asked for password. examples: SSH ...
1
vote
1answer
22 views

Adding address to known_hosts command line

I am having trouble adding an IP to known_hosts from command line. I have a mysql backup script that is supposed to upload files to an other server using sftp. The script works fine, but you have to ...
0
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0answers
31 views

kdm and ssh detecting different fully qualified domain name when using kerberos authentication

I'm attempting to setup Kerberos login support (Windows AD domain providing the kerberos) for Kubuntu 12.04 Linux workstations at the company I'm at. It's almost completely working but I can't get ...
0
votes
1answer
23 views

Port forwarding between 3 machines

I have 3 machines that are connected as a chain, A,B,C. A-->B-->C A is my machine, B is server, and C is other machine with some services and web server on it. Because of some issues I need ...
1
vote
1answer
24 views

VPN Tunnel Migration

I need to do a VPN tunnel migration from 1 Cisco Asa to another one on 20 remote routers. I wrote a little script that can automaticaly migrate the routers to the new ASA. However, when I run this ...
2
votes
1answer
116 views

A proper way to create a chrooted SSH on CentOS 7 [closed]

There are a lot of tutorials of how to create a chrooted SFTP, but I would like to use SSH, because it is much faster to simply wget, unzip, mysql and mysqldump than tossing around the FTP and ...
0
votes
1answer
26 views

Can you configure per-network SSH settings?

I'm talking about ssh_config(5). I wonder if you can define a config section or file based on the currently connected network. I'm thinking about that scenario where the corporate firewall blocks ...
0
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2answers
29 views

ssh connection from linux via windows to server

I have a linux computer and a windows computer which are connected to different networks. I would like to connect from my linux machine to a remote ssh server. From my linux computer I can access ...