Re: How to install anti virus
Linux does not suffer from Viruses like other OS, there are no known viruses in the wild, the main reason using AV on linux is to scan incase you share files with windows users.
It can still suffer from trojans, rootkits etc, but that comes down to vigilence and making sure you stick to the security model and not disabling passwords or enabling root etc.
Common sense, dont tell your system you want it to do something unless you are sure etc. Linux assumes you know what you are doing
In browsers you can still suffer from XSS or CSFR, other script related issues so use things like NoScript plugin for firefox, Ad-block etc.
See here for Anti-Virus information:
See below for Bodhi.Zazen's overview of Linux Security
Then these stickies:
security stickies (5 stickies)
Also see about sudo and why root account is disabled by default in Ubuntu:
rootsudo (very important you read this)
You might also want to look at Tor for anonymizing your connection:
Firewalls are not generally needed on a home desktop machine as that is taken care of by your router however there is a hardcoded firewall in Linux called Netfilter/IPTables and can be configured by reading here:
Though most people if use anything use UFW/GUFW which is a interface for managing IPTables without the complicated command line. see here:
Also look at apparmor for profiling your applications and there privelege:
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