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Linux Building Rules For The Cluster With Firewall Builder

Now that all objects are ready and heartbeat is configured on the machines, we can move on and build some firewall rules. Since this is a cluster configuration, all rules go into the rule set objects that belong to the cluster rather than its member firewalls.
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Block Outgoing Network Access For a Single User Using Iptables

Iptables has a special module called owner (ipt_owner), which is attempts to match various characteristics of the packet creator, for locally generated packets. It is valid in the OUTPUT and POSTROUTING chains.
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