I am new to Ubuntu, I have it installed on my computer (not on a virtual machine) and I am trying to connect to my Ubuntu machine remotely through PuTTY. I am getting the IP address of the Ubuntu machine using ifconfig. I'm trying to connect to this IP address with PuTTY but I am getting the following error message:
Network Error: Connection Timed Out As shown below:
Can anyone help me?
11 Answer
Well, AFAIR correctly you need the openssh server for that which is NOT installed by default.
So try
aptitude install openssh-server and try again.
So when the openssh-server is installed, try to see if it is running and to which port it listens to.
E.G.
[simmel]@[mars]$ service ssh status ssh start/running, process 1279 so mine is running, let's see to which ip(s) it listens to.
[simmel]@[mars]$ sudo netstat -tlpn Aktive Internetverbindungen (Nur Server) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1279/sshd So it's running and listening on all interfaces, which is the way it's setup by default.
Now try to connect to the server from localhost, does this work?
[simmel]@[mars]$ ssh -p22 simmel@localhost Enter passphrase for key '/home/simmel/.ssh/id_rsa': It's working too. So the service itself is up an running and waiting for connections.
Now go to the system from where you would like to connect and install nmap and then scan the system, you should see the open ports after the scan.
sudo aptitude install nmap and then (as root)
nmap -sS 10.128.225.177 Starting Nmap 6.40 ( ) at 2015-04-01 14:33 CEST Nmap scan report for 10.128.225.177 Host is up (0.00075s latency). Not shown: 995 closed ports PORT STATE SERVICE 22/tcp open ssh Nmap done: 1 IP address (1 host up) scanned in 8.45 seconds Alternatevly you could try
telnet <ip-adress> 22 If both don't work your system def. blocks these request, possibly as suggested with a firewall. Most common is iptables. So give it a try and check on the system you installed the openssh-server
iptables -L If it looks different like this
[simmel]@[mars]$ sudo iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination an active iptables might be blocking these requests.
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