computer security questions - luv-beginners

7 Oct 2019

Hello,

          This is a follow up email in the hope that someone as confused 
as me might find it useful.

I have solved my computer security issues for now using the following 
script.

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#!/bin/sh

sudo apt install -y apparmor
sudo apt install -y apparmor-profiles
sudo apt install -y apparmor-profiles-extra
sudo apt install -y apparmor-utils
sudo aa-enforce /etc/apparmor.d/*

fireholpath="/usr/sbin/firehol"

sudo apt remove -y ufw
sudo apt install -y firehol
sudo crontab -u root -l > temp.txt
if grep 'firehol' temp.txt;
then
     echo "no need to update crontab"
else
     echo "updating crontab"
     echo "@reboot $fireholpath start" >> temp.txt
     sudo crontab -u root temp.txt
fi

sudo firehol start

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I don't know how smart the above script is , but it works for me.I found 
that the default firewall with linux mint (ufw) was not working 
effectively.At least with the default settings it comes with.My 
computers were getting hacked through using firefox with attackers 
gaining root access in about 20 minutes no matter how strong the 
password was.In such times, changing the hostname and password helped 
things temporarily.

Enjoy your linux.

regards Peter