ssh Connection

Arjun · 07-21-2012, 05:34 AM

I am new to this.

I want to make connection to localhost via ssh. I have read some tutorials but they were for remote machine & so doesnt working on localhost.

So i want to know that how can i connect to localhost via SSH.

Thanks

Nylex · 07-21-2012, 05:37 AM

If you have the SSH daemon running, you can just do "ssh localhost" or "ssh 127.0.0.1". Why do you want to do this, though?

Arjun · 07-21-2012, 05:47 AM

I have tried this but the output i got is

Quote:

ssh: connect to host localhost port 22: Connection refused

Nylex · 07-21-2012, 05:48 AM

Did you check whether the SSH daemon is running?

sharadchhetri · 07-21-2012, 08:25 AM

Quote:

Originally Posted by Nylex

Did you check whether the SSH daemon is running?

do cat /etc/hosts

find the hostname

if localhost is written.Use that ip address.
then do ssh ip_address_of_localhost

Arjun · 07-22-2012, 07:25 AM

Ok

I have checked it

SSH was not running

But now i am getting this error on input of this command

sshd 127.0.0.1

Quote:

sshd re-exec requires execution with an absolute path

Now when i did this

/usr/sbin/sshd 127.0.0.1

I got this message

Quote:

Extra argument 127.0.0.1.

What is this ?

tshikose · 07-22-2012, 08:31 AM

Hi Arjun,

There are two totally different binary sshd (for the server aka dameon) and ssh (for client).
To ensure that the server is running, you should launch something as root

Code:

service sshd status

and look at the output

To connect to your local server from your local client, type (as any user)

Code:

ssh 127.0.0.1

Maybe will need to first search for a tutorial for SSH (just google).

Arjun · 07-22-2012, 08:39 AM

Quote:

Originally Posted by tshikose

Hi Arjun,

There are two totally different binary sshd (for the server aka dameon) and ssh (for client).
To ensure that the server is running, you should launch something as root

Code:

service sshd status

and look at the output

To connect to your local server from your local client, type (as any user)

Code:

ssh 127.0.0.1

As i input

service sshd status

I got

Code:

sshd: unrecognized service

As i entered

service ssh status

I got

Code:

ssh start/running, process 2958

Seems to be running ,then how can i make it work ?

Quote:

Originally Posted by tshikose

Maybe will need to first search for a tutorial for SSH (just google).

I have already mentioned that i didnt got any tutorial related to ssh on localhost

spiky0011 · 07-22-2012, 09:34 AM

Hi

What happens if you

Code:

ssh user@ip-of-host

xtpeqii · 07-22-2012, 11:29 AM

Quote:

Originally Posted by Arjun

I have tried this but the output i got is

First do this.

Code:

vi /etc/ssh/sshd_config

Then search for "Port [number]", default is 22.BUT it's ok even if it's not 22. remember this port number.

Second

make sure you get the root previlige, then proceed

Code:

service iptables -A INPUT -p tcp --dport [the number you just remembered] -m state --state NEW -j ACCEPT

then,

Code:

service iptables save

and then

Code:

service iptables restart

it works fine for me, ssh [username]@localhost

also MAKE SURE the user of username really exists on you local machine...

for more reference, please read this article:
http://wiki.centos.org/HowTos/Network/IPTables

PS: if you are totally new to this, it really takes some time ...

chrism01 · 07-22-2012, 06:49 PM

Try (as root)

Code:

# This shows listening tcp services
netstat -tanp |grep ssh

# Looking for
#AddressFamily any
#ListenAddress 0.0.0.0
#ListenAddress ::

more /etc/ssh/sshd_config

if this is on RHEL/Fedora

Arjun · 07-23-2012, 04:56 AM

Quote:

Originally Posted by spiky0011

Hi

What happens if you

Code:

ssh user@ip-of-host

When i do this
ssh root@127.0.0.1

I get this

Code:

Read from socket failed: Connection reset by peer

So when i do this
sshd root@127.0.0.1

I get this

Code:

sshd re-exec requires execution with an absolute path

But when i do this
/usr/sbin/sshd root@127.0.0.1

I gets this message

Code:

Extra argument root@127.0.0.1

Quote:

Originally Posted by xtpeqii

First do this.

Code:

vi /etc/ssh/sshd_config

Then search for "Port [number]", default is 22.BUT it's ok even if it's not 22. remember this port number.

Second

make sure you get the root previlige, then proceed

Code:

service iptables -A INPUT -p tcp --dport [the number you just remembered] -m state --state NEW -j ACCEPT

I am getting this error message on above command

Code:

iptables: unrecognized service

I am running it as root.

Nylex · 07-23-2012, 06:07 AM

Quote:

Originally Posted by Arjun

So when i do this
sshd root@127.0.0.1

As others have mentioned above, "sshd" is the server binary so you'd never try to make an SSH connection using it. "ssh" is the client binary and that's what you use to connect.

spiky0011 · 07-23-2012, 11:14 AM

Hi

What is wrong with using the true ip 192.168.xx.xx what ever it is?
Or am I missing something.

I cant ssh in using @localhost or 127.0.01 but I can using the ip add @10.42.43.1

xtpeqii · 07-23-2012, 07:57 PM

Quote:

Originally Posted by Arjun

I am new to this.

I want to make connection to localhost via ssh. I have read some tutorials but they were for remote machine & so doesnt working on localhost.

So i want to know that how can i connect to localhost via SSH.

Thanks

COULD YOU provide us the following content:

content in /etc/ssh/sshd_config

THOUGH YOU'D BETTER ASK SOMEONE WHO USE FEDORA in case of some difference between multiple distros.