CLiDon'tKnow

$ ./ccna --labs --free --mobile

Know the CLI.Free CCNA labs online — on your phone.

CLiDon'tKnow is a Cisco IOS-style command line in your browser: configure real lab topologies, get graded as you type, and practice anywhere — even offline on the train.

Start a free lab → Install on your phone

Lesson 0: your first SSH session

A Cisco IOS-style router is listening right here. SSH in, look around, configure an interface and ping a PC: 7 steps, about three minutes, nothing to install.

guest@center-of-learing: ~

    Practice where you are

    CCNA labs without a lab: no Packet Tracer install, no VM, no laptop required.

    Real IOS habits

    Modes, abbreviations, TAB completion, ? help and show commands — routing, switching, ACLs, NAT, DHCP and more.

    Graded as you type

    Every lab has objectives that check the whole topology, with hints when you're stuck. Ping and traceroute from the PCs to prove it.

    Follows the course

    CCNA labs line up with the free Jeremy's IT Lab video course, Day by Day, so you can watch, then lab.

    Put the lab on your home screen

    Install CLiDon'tKnow like an app: it opens full-screen, the terminal fits your thumbs, and every free lab works with no signal. Labs on your phone, not just your desk.

    1. Open this page on your phone (Chrome, Edge, Samsung Internet or Safari).
    2. Use the browser menu: Install app or Add to Home screen.
    3. Launch it from your home screen — it works offline.

    Pricing

    Start free with no signup. Upgrade when you want the whole library — a license key unlocks it on every device you use.

    Early access: every lab — CCNA, CCNP and CCIE — is free right now, with no signup. The paid plans below are coming soon.

    Free

    Get started on the CCNA, today.

    $0 forever

    no card, no signup

    • The first 8 CCNA labs
    • The Daily Lab, every day (any track)
    • Saved projects in your browser
    • Works offline after the first visit
    Start free

    Pro

    The full CCNA study path.

    $79 /year

    or $9/month

    • All 19 CCNA labs, mega lab included
    • Everything in Free
    • One key for phone, tablet and laptop
    Coming soon

    EVERY TRACK

    Pro+

    CCNA, then on to CCNP and CCIE.

    $129 /year

    or $15/month

    • Everything in Pro
    • The CCNP track: OSPF, EIGRP, BGP, VRF, HSRP, QoS, ZBF, NetFlow
    • The CCIE track: MPLS L3VPN, DMVPN, troubleshooting scenarios
    Coming soon

    Lifetime

    Pay once, keep every track.

    $199 once

    no subscription

    • Everything in Pro+, forever
    • CCNA, CCNP and CCIE tracks
    • One payment, no renewals
    Coming soon

    Prices in USD. Checkout is through PayPal: pay with PayPal, Venmo or a card. Have a coupon? Enter it at checkout. Cancel a subscription any time. Already bought? Enter your license key.

    FAQ

    Are the CCNA labs really free? Do I have to sign up?

    Yes. Every lab is free, CCNA through CCNP and CCIE, with no signup, no email and no key. It runs entirely in your browser and keeps working offline.

    Yes. The first 8 CCNA labs and the Daily Lab stay free forever with no signup, no email and no key. They run entirely in your browser and keep working offline.

    Can I do CCNA labs on my phone?

    That's what CLiDon'tKnow is built for. Add it to your home screen and it opens full-screen like an app, with a touch-friendly terminal, and works without a connection.

    Is this real Cisco IOS?

    It's a simulator that behaves like the IOS command line: modes, abbreviations, TAB completion, ? help, show commands and real protocol behavior, graded against lab objectives as you type. It isn't Cisco software, so there's nothing to install.

    How do Pro and Pro+ work without an account?

    They're coming soon. Checkout will be through PayPal: pay with PayPal, Venmo or a card. You get a license key by email; paste it in Settings and the labs unlock on that device. Use the same key on your phone and your laptop. No account, no password.