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Check port 2222 is open on a remote host

 
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Top Forums UNIX for Dummies Questions & Answers Check port 2222 is open on a remote host
# 1  
Old 09-26-2013
Wrench Check port 2222 is open on a remote host
I am able to connect to a remote host using the legacy IP and port 2222.
Today the remote has a new IP I am unable to connect.

How to check if the remote host is blocking or if its my server is unable to connect.

Code:
Err Msg : telnet: Unable to connect to remote host: Connection refused
Err Msg : ssh: connect to host b port 2222: Connection refused
Connection closed

Let me know if you need more details.
Last edited by Scott; 09-26-2013 at 11:21 AM.. Reason: Code tags
# 2  
Old 09-26-2013
Can you connect to the host at all?
# 3  
Old 09-26-2013
No I cannot connect, this is the error when I telnet Unable to connect to remote host: Connection refused
# 4  
Old 09-26-2013
Are you sure you have the correct IP address?

Is it possible that the ssh server was configured to listen on a specific IP address (i.e. the ListenAddress 0.0.0.0 option in /etc/ssh/sshd_config).

Have you tried scanning the IP to verify that ssh is listening?

Code:
nmap -sV -p2222 <ip address>

# 5  
Old 09-26-2013
Assuming ICMP echo hasn't been disabled, traceroute will shed light on the reachability of the new ip address.

If all is well with traceroute, then you know that the issue isn't physical and that routing is correctly configured, and firewalled or disabled services are likely the problem.

Regards,
Alister
# 6  
Old 09-26-2013
Thanks for the advice. I am new to using traceroute, what options in traceroute should I focus on.
 
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