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s.ouchene
Asked: 2016-10-11 06:34:37 +0800 CST

Cannot connect to another machine via ssh

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I was able to connect to my xubuntu system installed in a virtual box via ssh from my PC (running Ubuntu 16.04): 

ssh [email protected]

Later, in the same machine (xubuntu) I executed the following commands to enable FTP access: 

sudo ufw disable
sudo iptables -F

Now I cannot connect to it via ssh, I get the following error:

ssh: connect to host 192.168.8.103 port 22: Connection timed out

How can I solve this issue?

ssh

2 Answers

  1. Can you please restart your computer to undo this iptables -F?

    If you want to allow FTP why not running: ufw allow 21/tcp ufw enable

    next please install nmap and check if the port is reachable at all: apt-get install nmap

    then: nmap -p 22 192.168.8.103 and nmap -p 21 192.168.8.103

    Post the results, I am curious if the ports are reachable at all.

    • 1
  2. Best Answer

    The problem was that ssh was not allowed by the firewall, so :

    sudo ufw allow ssh

    solved my problem.

    • 0