SSH login issue

kumarsalmeda · 08-21-2012, 01:51 PM

Am unable to login into my remote server using shh, how can i check shh services running or not and 22 port listen status
am trying to use nmap and telnet can you give exactly syntax
can anybody please help on this

Thanks

lleb · 08-21-2012, 02:10 PM

nmap -22 IP

you can not telnet to port 22, that is port 23.

the router the remote computer is behind has to have port 22 forwarded to the LAN IP of the computer you are trying to connect to, and in addition to that the computer must be properly configured to allow connection via ssh and sshd must be running.

kumarsalmeda · 08-22-2012, 10:19 AM

Quote:

Originally Posted by lleb

nmap -22 IP

you can not telnet to port 22, that is port 23.

the router the remote computer is behind has to have port 22 forwarded to the LAN IP of the computer you are trying to connect to, and in addition to that the computer must be properly configured to allow connection via ssh and sshd must be running.

=========
Dear Friend,

Some time the namp is not working or disabled or blocked that command,
how can i resolve the issue, how can i know problem of remote server how can i connect
how can i check port 22 is listening or not and how can check sshd services in remote server
can you please help me this
Thanks

chrism01 · 08-22-2012, 06:25 PM

Part of the problem may be that you have several typos in your posts; if you do this on the cmd line, it will appear as if the cmd doesn't exist.
If you can login to the ssh server eg at the console, you check if its running ssh

Code:

netstat -tanp | grep 22

check the firewall

Code:

iptables -nvL

jschiwal · 08-25-2012, 06:19 AM

You can use telnet as a debugging tool.
telnet <server> 22
The second number is the port number. If you can reach the server and the sshd server is running, you will see a message about the version of openssh. If this is the case, try using:
ssh -vv user@host
The -vv option will provide debug information on both sides.

If the telnet command doesn't make a connection, try pinging the server.