Networking and the Black Arts - The case of the disappearing computers

  1.    #1

    Networking and the Black Arts - The case of the disappearing computers


    I have long considered computer networking to be a black art, and recent events have tended to confirm this opinion.

    Last week my home network comprised 2 PCs (my wife's and mine) and my laptop. Using File Explorer I could see each of these machines and and had full access from anyone to any other other one. They all happily co-existed and shared nicely.

    At the weekend, the laptop took umbrage and left. Won't speak to any of its mates. Today my PC can only see itself when I click on Network. My wife can see me but I won't let her have access!

    I appreciate that I have not given any sensible details for anyone to help solve the problem - just giving vent to my frustration. I know how to get it working again but why does this happen? Why do machines on networks suddenly disappear or change their access levels. Malware is of course a possibility but all machines are clean and I have good security, so unlikely to be the reason. MS updates frequently change things so that is my prime suspect.
      My ComputerSystem Spec

  2. jimbo45's Avatar
    Posts : 7,530
    Windows / Linux : Centos, Ubuntu, OpenSuse
       #2

    Hi there

    @Sigurd

    A possibility is that the LAN address of "the master browser" has changed so networking gets hosed up. Typical routers these days even when using DHCP to assign local IP addresses on your Lan e.g 192.168.0.xx for instance will re-assign addresses again after usually 1 day by default. In the router options on DHCP there's usually a "Lease time" -- set it to indefinite or a decently long time.

    In a Network one computer takes over "The master browser" function -- I agree with you Windows Networking seems just like Black Magic to me as well. !!

    Reset router and re-boot all the machines again after changing the lease time. To get into the admin panel on your router it's usually 192.168.0.1 or 192.168.1.1 -- should be on the router manual or check on the internet.

    Also re-start all phones / tablets /smart Tv's etc as well -- yes I know anybody under about 30 won't realize that phones actually do have a power off and a restart option !!!!!


    Depending on your router you should find settings similar to this -- screen will be different though for different routers :

    Click image for larger version. 

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    Cheers
    jimbo
      My ComputerSystem Spec

  3.    #3

    Thanks Jimbo - I'll have a look at that.
      My ComputerSystem Spec

  4.    #4

    Its a bit worrying saying you could conect to everything on other pc do you mean just shares or everything? If you can connect to everything so can hackers and malware
      My ComputerSystem Spec

  5. jimbo45's Avatar
    Posts : 7,530
    Windows / Linux : Centos, Ubuntu, OpenSuse
       #5

    Hi there
    I doubt whether it's hackers or malware - these problems on home computers are grossly overblown these days - especially for people just using computers "normally" !!!.

    Cheers
    jimbo
      My ComputerSystem Spec

  6.    #6

    Its a bit worrying saying you could connect to everything on other pc
    When I said everything I meant data I wanted to share, not literally everything. The system drives are not shared.

    especially for people just using computers "normally" !!!.
    I'm afraid/pleased to say that the contents of my PC would be very boring to a hacker!!!
      My ComputerSystem Spec


  7. jimbo45's Avatar
    Posts : 7,530
    Windows / Linux : Centos, Ubuntu, OpenSuse
       #7

    Sigurd said: View Post
    When I said everything I meant data I wanted to share, not literally everything. The system drives are not shared.


    I'm afraid/pleased to say that the contents of my PC would be very boring to a hacker!!!
    Hi there

    @Sigurd

    Bad enough when you are on a train and have to put up with people having the most inane and senseless conversations on mobile phones --usually the more unimportant the issue the louder the conversation -- just imagine the security service personnel having to listen to most of that type of drivel for 24/7 --there wouldn't be enough Mental Hospitals or Stress councillors on the planet to handle the need of those employees who had to endure that stuff --even after 1 week they'd go bonkers.

    My most hideous experience was on a Train from Sutton (SW London going to Wimbledon for the Tennis tournament) recently where there were about 3 people in the carriage -- great to find a not crowded train in London -- and the whole thankfully 20 min short journey to Wimbledon Station was an enormous lady (??? gender these days --who knows !!) screaming at a voice that would make a boot camp or drill sergeant jealous just talking about her bowels the whole way -- after 20 mins of this got off relieved at Wimbledon and found the nearest pub to Wimbledon station and had 2 large glasses of scotch to recover !!!!!.


    Total paranoia by most people if they think security services etc have time or inclination to monitor anything other than a tiny miniscule fraction of day to day civilian activities. !!!!

    I reckon I could cure world wide insomnia problems at a stroke --just listen to some of my mobile conversations --even I get bored !!!! although I wouldn't discuss bowel complications or other medical stuff on a mobile in a public place etc !!!!

    Cheers
    jimbo
      My ComputerSystem Spec

  8.    #8

    20 minutes discussing bowel problems? I don't think even I have ever had to put up with that - and I'm a retired GP!

    However I can't help thinking that you and your handful of fellow travelers exhibited the British reluctance to complain (!). Why didn't any one of you politely tell her to shut up, tone it down, or at least discuss something more interesting? There are even a few really interesting medical options!
      My ComputerSystem Spec


 

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