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Need advice, Linux LAN monitoring — Parallax Forums

Need advice, Linux LAN monitoring

RsadeikaRsadeika Posts: 3,837
edited 2014-07-16 15:10 in General Discussion
Yesterday I had a power outage, for about three hours, they were working(upgrading) the power lines. So, when the power came back on, a lot of my equipment changed a bit. Specifically my headless Raspi pseudo NAS got a new IP address, if it wasn't for Look@Lan on one of the Windows machines, it would of been a real PIA to get to the ifconfig moment. I guess what I need to know is if there is a Look@Lan, or something like it, program for a Kubuntu 14.04 64-bit machine? Yes, I decided to give Kubuntu another look see, now I need a lot of tools for the machine, that I took for granted on my Widows box.

Thanks

Ray

Comments

  • NWCCTVNWCCTV Posts: 3,629
    edited 2014-07-16 12:15
    Most routers these days have a "Connected Devices" menu that will show IP Addresses of all Wired and Wireless devices on the Network.
  • Heater.Heater. Posts: 21,230
    edited 2014-07-16 12:31
    You might like nmap, http://nmap.org/, or then there is nagios,http://www.nagios.org/, and doscan, http://www.enyo.de/fw/software/doscan/. I think they are all available as Ubuntu packages.
  • Heater.Heater. Posts: 21,230
    edited 2014-07-16 12:43
    As mentioned above you should be able to find your Pi in the admin interface of your router. Whist you are there configure the router to always give the same IP address to the Pi.
  • GadgetmanGadgetman Posts: 2,436
    edited 2014-07-16 13:39
    I'm sorry to say it, but the problem here isn't monitoring, it's the wrong setup on the boxes.

    Many routers with DHCP-server built-in allows for assigning 'reservations'. And if that can't be done, it's usually possible to assign IPs manually on the boxes in question.
    (Just make certain the manually assigned address is outside the DHCP pool, but inside the IP-block that your subnet mask allows for)

    DHCP is preferred to using manual IPs as it means you only have to update one location.

    I'm administrating a Class C block of adresses, so I know that the only way to do this is to do it properly from the beginning.
    (The C-block is split into blocks of varying sizes, from 512 addresses, down to 8 address blocks... My organisation has a B-class block. And we're supplementing with 10.x.x.x for a lot of stuff)
    Stuff that by necessity has to use manual adresses still gets dummy reservations in the DHCP-server, so that it's obvious that the address is in use.

    Some stuff, such as Cisco switches NEEDS reservations as they're notoriously bad at reneweing IP leases.
    (They keep on using the IP even if they never ask the server if they can still use it. Sooner or later the server will 'free' the adress, and something else will try to use it. WHAM!)
  • RsadeikaRsadeika Posts: 3,837
    edited 2014-07-16 14:11
    JIBO fix my computers and associated mess, now.

    Ray
  • NWCCTVNWCCTV Posts: 3,629
    edited 2014-07-16 14:49
    JIBO fix my computers
    I think that is out of JIBO's Network!!!
  • Heater.Heater. Posts: 21,230
    edited 2014-07-16 15:10
    Ray,
    JIBO fix my computers and associated mess, now.
    JIBO cannot be reached. Check your network configuration.
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