Config Museum: SSH Config

certskills
By certskills August 2, 2012 09:32

Today’s post gives you another 10 minute config lab exercise, this time with SSH. Just like the previous lab post, this one starts with a cleanly-wiped router config (except hostnames), to making that one router being ready for SSH. As usual with this style of lab, no muss, no fuss, just a straightforward short exercise. Coming soon, I’ll add IP addressing, RIP, and EIGRP.

Problem: Configuring SSH

Cisco routers come ready to run Telnet, except for a few passwords. However, they require a little more work to support SSH connections into the router. The trick for today’s exercise is to decide just what that bare minimum of non-default commands happens to be to get a router ready for inbound SSH connections.

For today’s lab, configure only router R1 in the figure below. The initial config has all default configuration, except it already has a hostname R1 command, just so it is obvious which router is which. Your job is to list the configuration on R1 such that:

  1. A user at PC1, in the same VLAN as R1’s F0/0 interface, can connect successfully into R1 using SSH
  2. The router cannot rely on any server to list password info and authenticate the user
  3. Configure no unnecessary commands (use defaults)
  4. Assume PC1, as well as all LAN devices, have already been configured correctly

Figure 1 – Lab Topology for this Lab

Telnet Config (Answer)
Are You Ready to Pass?
certskills
By certskills August 2, 2012 09:32
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6 Comments

  1. P Ganesh May 7, 11:15

    Hi Wendell,
    Please note, the link to the answer does not work

    Reply to this comment
    • CCENTSkills May 7, 11:27

      Thanks! Just fixed it. Lots of those due to a change in WordPress… FYI, they’re usually nearby in terms of sequence. Regardless… thanks much!
      Wendell

      Reply to this comment
  2. John Z July 24, 12:14

    Hi Wendell,
    Help!
    Can’t find the answer to this lab.

    Reply to this comment
  3. Andrei August 30, 16:33

    Hello Wendell,

    This is exactly the same issue i encounter as in the previous lab named “Telnet Config”. Hopefully you got my question, in order to figure this lab as well.

    Thank you!

    Reply to this comment
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