Menu
humingqiang5262131
By:
humingqiang5262131

I can't establish a ssh connection to my server

March 7, 2014 9.3k views
as the title said: I try to execute the command $ nc -w 10 192.241.218.175 22 && echo true || echo false and I got false
Log In to Comment
4 Answers
kamaln7 MOD March 7, 2014
I'm able to connect to port 22 on 192.241.218.175. Is it still not working for you?
Reply
matthew.r.schwartz March 7, 2014
Your system appears up and responding to ssh connections
$ ping 192.241.218.175
PING 192.241.218.175 (192.241.218.175) 56(84) bytes of data.
64 bytes from 192.241.218.175: icmp_req=1 ttl=57 time=76.0 ms
64 bytes from 192.241.218.175: icmp_req=2 ttl=57 time=75.8 ms
64 bytes from 192.241.218.175: icmp_req=3 ttl=57 time=76.1 ms
64 bytes from 192.241.218.175: icmp_req=4 ttl=57 time=75.6 ms
^C
--- 192.241.218.175 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3000ms
rtt min/avg/max/mdev = 75.653/75.941/76.140/0.189 ms
$ nmap 192.241.218.175

Starting Nmap 5.21 ( http://nmap.org ) at 2014-03-07 18:10 EST
Nmap scan report for charmingwho.info (192.241.218.175)
Host is up (0.075s latency).
Not shown: 999 closed ports
PORT STATE SERVICE
22/tcp open ssh

Nmap done: 1 IP address (1 host up) scanned in 1.53 seconds
$ ncat 192.241.218.175 22 && echo true || echo false
SSH-2.0-OpenSSH_5.3
$ ssh 192.241.218.175
The authenticity of host '192.241.218.175 (192.241.218.175)' can't be established.
RSA key fingerprint is cc:70:82:29:42:b6:e1:92:6a:0b:61:7b:c9:7a:7f:2a.
Are you sure you want to continue connecting (yes/no)?
Reply
mrityunjaya.shukla March 8, 2014
I am also having this exact issue. I am doing ssh in windows through cygwin. Also tried it through Chrome ssh extension.

Response from cygwin

$ ssh root@128.199.218.65 -p 22
Could not create directory '/home/admin/.ssh'.
The authenticity of host '128.199.218.65 (128.199.218.65)' can't be established.
ECDSA key fingerprint is 30:b3:9b:12:d5:f2:bd:30:a7:61:7b:c5:d7:50:22:82.
Are you sure you want to continue connecting (yes/no)? yes
Failed to add the host to the list of known hosts (/home/admin/.ssh/known_hosts).
root@128.199.218.65's password:
Connection closed by 128.199.218.65

Response from chrome
Welcome to Secure Shell version 0.8.26.
Answers to Frequently Asked Questions: http://goo.gl/TK7876
[Pro Tip] Use 'Open as Window' to keep Control-W from closing your terminal!
[Pro Tip] See http://goo.gl/TK7876 for more information.
Connecting to root@128.199.218.65...
Loading NaCl plugin... done.
Connection closed by UNKNOWN
NaCl plugin exited with status code 255.
(R)econnect, (C)hoose another connection, or E(x)it?

Please let me know the issue here.

Thanks
Mrityunjaya
Reply
kamaln7 MOD March 9, 2014
@mrityunjaya.shukla: See http://ekawas.blogspot.com/2007/03/solving-pesky-ssh-issues-in-cygwin.html, does that fix it?

I'm able to connect to your server. Are you sure you set up your SSH key properly? Check out https://www.digitalocean.com/community/articles/how-to-set-up-ssh-keys--2.
How To Set Up SSH Keys
by Etel Sverdlov
SSH keys provide a more secure way of logging into a virtual private server with SSH than using a password alone. With SSH keys, users can log into a server without a password. This tutorial explains how to generate, use, and upload an SSH Key Pair.
Reply
Have another answer? Share your knowledge.