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Joined 1 year ago
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Cake day: June 2nd, 2023

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  • I would suggest more learn by doing approach. Learning OSI model etc is nice, but it is quite jargon :)

    Use some old PC as a server, and get some network cards into it, and use it as firewall/router. Route your home network/NAT/DNS/DCHP through it. Raspberry Pi’s are nice, but their hw is still bit limited.

    OPNSense is quite nice and easy free and open source firewall/router solution.

    If you want to add bit of flexibility, you can use some virtualization platform like VMware in to the machine, so that you can run OPNSense in it, with some other virtual servers.

    Then when you get things working, you can start looking in to VLAN’s, because they are quite important part of enterprise networking. Most cheap switches nowadays support VLAN’s out of the box.



















  • Filesystem itself is fully ok with it, space is just a character as any. Problem comes with console.

    e.g. you want to delete file called “not important.pdf”.

    You type in: rm not important.pdf, and hit enter. Didn’t hit tab because you knew the filename and didn’t arse with it.

    Outcome is that you just deleted important.pdf which contained your crypto wallet address which you were suppose to tattoo on your left arm.