Web portal and reverse proxy rules can be used along with DNAT and port forwarding rules to publish the company's internal resources to Internet users.
If there are internal resources published using DNAT, port forwarding, reverse proxy, and web portal rules, the rules are processed in the following order:
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DNAT/port forwarding rules.
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Web portal rules. If the host name in the request matches the web portal's host name, and the port number in the request matches the one specified for the web portal, web portal rules are processed.
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Reverse proxy rules.