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HPR - Ep0465: Failsafe security

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WARNING: It's easy to lock yourself out of a system implementing these changes so make sure you have physical access to the console of the system you are securing.To display all processes listening netstat -anp | grep -i listenDeny all connections to any port from any external IP address/etc/hosts.deny all:all/etc/hosts.allow sshd: # My other pcIPTables Tutorial: good starting point to block all except ssh: Disable root login via ssh: up ssh keys and disabling password logins.

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