December 2018
Beginner
320 pages
8h 57m
English
Content preview from CentOS Quick Start Guide
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Firewalld zones
The firewalld segregates incoming traffic into zones. Each zone is a collection of rules. To select which zone is to be used for an incoming connection, firewalld uses the following three rules to match in the given order:
- The source address on the incoming packet is matched with the source address rule configured for the zone. If the source address matches, the packet is routed through that zone.
- If the source address does not match, then the incoming interface for a packet is matched with the interface set up for the zone and that zone is used.
- If neither the incoming interface of the packet nor the source address of a packet matches, then the rules given in the default zone are applied on that packet. The default zone ...
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