Linux as Internet Gateway

This post is for small office use / for beginners.

Many would require to use Linux as Internet gateway. Connecting DSL links over Linux server you can filter URL & get proxy caching to reduce link consumption, use DHCP server, use internal DNS server, create internet usage report & block unwanted traffic using iptables.

Configure DHCP to avoid ip address conflicts.

Use your own DNS for internal / external world.

You can use squid proxy over gateway for caching & url filtering.

Squid with ClamAV.

Generate proxy usage report. Sqstat for realtime log monitoring.

You can use iptables from shell OR fwbuilder to block unwanted traffic.

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