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OPS235 Lab 7

8 bytes added, 17:19, 22 June 2016
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# OpenSSH should have been installed by default. Let's confirm this by issuing the command:<br /> <b><code><span style="color:#3366CC;font-size:1.2em;">rpm -qa | grep ssh</span></code></b>
# You should see a number of packages installed including <b>openssh-clients</b> and <b>openssh-server</b>
# <b><code><span style="color:#3366CC;font-size:1.2em;">openssh-server</span></code></b> installs a service called '''sshd'''. Confirm that this service is running by issuing the command:<br /><b><code><span style="color:#3366CC;font-size:1.2em;">systemctl status sshd</span></code></b><br><br>'''NOTE:''' the ''netstat'' command is a very useful command for anything to do with networking. Read the man pages and make sure you understand the netstat command's output.<br><br>
# Now that you know the service is running, investigate what '''port number''' and '''protocol''' sshd uses by issuing the command:<br /><b><code><span style="color:#3366CC;font-size:1.2em;">netstat -atunp | grep sshd</span></code></b>
# What protocol and port is the sshd process using? What is the state of the port? Why would you think that UDP ports don't have a state?

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