IP-Tables and Security in General

[Aruna Hewapathirane]

Hi Everyone,

I recently noticed lots of incoming connections on my fire-starter ( its
the firewall I use ) and my load average kicked up considerably but I am
unable to identify what is specifically causing all this sudden unwanted
incoming traffic as am no network specialist :-)

Does anyone have any information on how to secure Ubuntu with iptables for
newbies to system administration and security in general ?

Do we have a best practices model for preventing intrusions and securing
one's system ?

Thank's - Aruna
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