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Thread: Linux Mint machine blocks all incoming connection from a single PC on Network

  1. #1
    Join Date
    May 2008
    Location
    Tampa, FL Area
    Beans
    40
    Distro
    Ubuntu 12.04 Precise Pangolin

    Linux Mint machine blocks all incoming connection from a single PC on Network

    I'm flabbergasted by this. I was editing /etc/network/interfaces, and then decided to change my settings over VNC instead. This halted my SSH session and also my VNC. I'm not sure if this locked me out or not, but I set cron up to restore an old copy of /etc/network/interfaces later that night and was able to SSH into the machine. Now I find that all connections from that machine--both Windows 7 and Ubuntu 14.04 can't reach the Mint Machine.

    Here's output from ssh -vv.

    Code:
    debug1: Reading configuration data /etc/ssh/ssh_config
    debug1: /etc/ssh/ssh_config line 19: Applying options for *
    debug2: ssh_connect: needpriv 0
    debug1: Connecting to xxx.xxx.xxx.xxx [xxx.xxx.xxx.xxx] port 22.
    debug1: Connection established.
    debug1: identity file /home/user/.ssh/id_rsa type -1
    debug1: identity file /home/user/.ssh/id_rsa-cert type -1
    debug1: identity file /home/user/.ssh/id_dsa type -1
    debug1: identity file /home/user/.ssh/id_dsa-cert type -1
    debug1: identity file /home/user/.ssh/id_ecdsa type -1
    debug1: identity file /home/user/.ssh/id_ecdsa-cert type -1
    debug1: identity file /home/user/.ssh/id_ed25519 type -1
    debug1: identity file /home/user/.ssh/id_ed25519-cert type -1
    debug1: Enabling compatibility mode for protocol 2.0
    debug1: Local version string SSH-2.0-OpenSSH_6.6.1p1 Ubuntu-2ubuntu2
    ssh_exchange_identification: read: Connection reset by peer
    This isn't just SSH, because Putty can't get in, VNC can't get in, Remmina can't get in, nor can SMB on either OS on the machine.

    All other devices on the network get SMB, VNC, and SSH without issue.

    I'm just blown away. HOW can I fix this?

  2. #2
    Join Date
    Aug 2009
    Location
    Makati City, Philippines
    Beans
    2,269
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: Linux Mint machine blocks all incoming connection from a single PC on Network

    If it's Linux Mint it has a GUI, if you want to set static IP address, you the GUI network Manager. Now it seems that you are completely locked out, last resort would be to go the machine itself and configure what you want.

  3. #3
    Join Date
    May 2008
    Location
    Tampa, FL Area
    Beans
    40
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Linux Mint machine blocks all incoming connection from a single PC on Network

    Truly excellent username.

    After resetting the network settings with VNC on another PC and rebooting three times and walking away for a few hours (and then doing a hard reset after the PC had locked down all network traffic) it's back to normal. Computers are weird. I have no idea what fixed it but I'm calling this solved.

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