Try a graded Cisco IOS lab, free in your browser
Every lab on Goldfish Networks is a problem to solve, not a walkthrough to copy: you build it, then get a pass/fail on your config against the answer key. Here's that grader, running in your browser on a real Cisco IOS config — no download, no sign-up.
Secure R1 for remote management (SSH)
R1 is reachable on the console but still permits nothing but a half-finished SSH setup — Telnet-style access is not locked down and SSH isn't fully enabled. Finish hardening it, then grade your work against the answer key. This is a real graded lab, shrunk to fit in your browser: no download, no account.
What the grader checks
- Set a domain name — R1 needs one before it can generate an SSH key.
- Create a local username that stores an encrypted secret (not a plaintext password).
- Restrict the VTY lines to SSH only, so Telnet can't be used.
- Have the VTY lines authenticate against the local user database.
- Force SSH to version 2.
Press Grade my config to check your work against the answer key.
- Set a domain name — R1 needs one before it can generate an SSH key.
- Create a local username that stores an encrypted secret (not a plaintext password).
- Restrict the VTY lines to SSH only, so Telnet can't be used.
- Have the VTY lines authenticate against the local user database.
- Force SSH to version 2.
This is one small lab. The real thing is a fresh one every day.
A new graded Cisco Modeling Labs scenario daily — build it on real IOS, grade your own config, own the ones you buy forever. Start with the full free sample.
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