The network traffic coming into and leaving the kiosk is also a concern. The only traffic that should be passing is http, https, dhcp requests, and icmp echo. The firewall implemention for the 2.4 linux kernel is call netfilter and it can be used to block any unwanted traffic. The
FirewallScript firewall.sh is called at boot and blocks unwanted network traffic.
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DavidCollie - 30 Sep 2004
