putty connection timeout - how to troubleshoot - ssh

when i try to make a ssh connection (port 22) connection to a server in my college it's giving "network error- connection timed out" error. I'm connected to internet through my home wifi. Then, I went to my friend's home any tried to establish the same connection, it worked fine. Is This the problem with my router or internet connection. please help me in troubleshooting.
PS. None of my roommates were able to establish the ssh connection in my home wifi.

"network error- connection timed out" I usually get either when I am not able to ping the SSH Server(connectivity issue) or IPtables on server is blocking my connection.

Related

Connection timeout while trying to SSH

Hope I'm doing this right as this is my first StackOverflow question. I'm trying to SSH into a server, but running the ssh command results in a connection timeout (using the MobaXTerm client on Win10). I'm trying to connect on port 22, and have gone through Windows Firewall to make rules to open the port, but it's still not working. Any ideas as to why this is happening? I can provide relevant information as needed.
Thanks in advance!
That error message means the server to which you are connecting does not reply to ssh connection on port 22. I think three possible reasons for that:
The server has not installed ssh
You are running ssh with different port
The machine has a firewall that doesnot allow you to connect

Database Connectivity Issue

I'm installing an application and getting following error:
Can't connect to SQL Server DB.
Error: The TCP/IP connection to the host , port 1433 has failed.
Error: : Connection timed out. Verify the connection properties.
Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connection at the port.
Make sure that TCP connections to the port are not blocked by a firewall.
Can someone please advise me?
Issue resolved with the help of SQL Server configuration Manager

I try to connect to local host and glassfish server and cannot establish connection

I have recently instaled glassfish-4.1. When i try to establish connection with the localhost page or to glassfish (127.0.0.1 or 127.0.0.1:8080) - i get an error reply. When I checked the Netstat- an command on my cmd - I couldnt find either ports in the log. I get "Error connection refused" What should i do?

Notepad++ NppFTP [SFTP] Connection failed : Error reading socket

Does anyone know why I am unable to connect to my server using the Notepad++ NppFTP plugin with SFTP?
I have a CentOS 6.4 server with SSH on port 22.
When I try and connect using NppFTP I get the following output:
[NppFTP] Everything initialized
Connecting
[SFTP] Connection failed : Error reading socket
Unable to connect
Disconnected
This used to work when I had my SSH port set to 3264 but when I changed the SSH port back to 22 NppFTP stopped working. All the settings for the profile are correct including the right IP, username, password and port (22).
I can connect with SFTP using FileZilla and WinSCP successfully with these same SFTP details and I can connect with SSH using PuTTY.
I can connect with SFTP to other servers using NppFTP so I believe there is an issue in my server config I'm just not sure where or what.
I looked at the access logs but found no attempt at a connection from NppFTP, I turned the firewall off and still nothing.
In the end I got in touch with my server company and it turns out it was a problem on their end. This is what they had to say:
"This was caused by an IPS rule inspecting the network packets coming into the infrastructure, which helps identify brute force attacks."
Very strange, but after they made the change NppFTP can now connect successfully.

ApacheDS suddenly stopped connection

I've setup ApacheDS on my windows7 machine. It was working fine but suddenly it says connection refused.
Server is up but when trying to connect it gives below error. Please help
Error while opening connection
- Cannot connect on the server: Connection timed out: no further information
org.apache.directory.ldap.client.api.exception.InvalidConnectionException: Cannot connect on the server: Connection timed out: no further information
at org.apache.directory.ldap.client.api.LdapNetworkConnection.connect(LdapNetworkConnection.java:564)
at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper$1.run(DirectoryApiConnectionWrapper.java:227)
at org.apache.directory.studio.connection.core.io.api.DirectoryApiConnectionWrapper.runAndMonitor(DirectoryApiConnectionWrapper.java:1174)
It says connection refused.
No it doesn't. It says 'connection timed out'. It's not the same thing.
You have a connectivity problem or a firewall problem between the client and the server.