198
edits
Changes
→Part 1: How do you use ssh to tunnel other traffic.
# On your '''centos1''' VM (i.e. the http server), confirm everything is working locally by using a browser to connect to '''http://localhost'''
# Set the default firewall configuration on centos1 to '''REJECT''' incoming requests to http (TCP/80)
# NOTE: '''centos1''': if '''http://localhost''' stops working locally, add the following iptables rule to centos1, as root <br /><b><code><span style="color:#3366CC;font-size:1.2em;">iptables -I INPUT -i lo -j ACCEPT</span></code></b> # Confirm On '''centos2''' confirm that you can't connect by using firefox on centos to connect to centos1 '''http://centos1/'''
# On '''centos2''' confirm that the httpd service is stopped so it cannot interfere with your observations.
# The next step is to establish a <u>tunnel</u>. When you establish a tunnel you make an ssh connection to a remote host and open a new port on the local host. That local host port is then connected to a port on the remote host through the established tunnel. When you send requests to the local port it is forwarded through the tunnel to the remote port.