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because the port value less than 1024 is system port reserved.
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if you set 0 for the HTTP port, it will disable HTTP service.
4.3.4.4. Firewall Config
Firewall Configuration
In this web interface, you can set up firewall to prevent unauthorized Internet users from
accessing private networks connected to the Internet (input rule), or prevent unauthorized
private network devices from accessing the Internet (output rule).
Firewall supports two type of rules: input_access rule and output_access rule. Each type supports
at most 10 items.
Through this web page, you could set up and enable/disable firewall with input/output rules.
System could prevent unauthorized access, or access other networks set in rules for security.
Firewall, is also called access list, is a simple implementation of a Cisco-like access list
(firewall). It supports two access lists: one for filtering input packets, and the other for filtering
output packets. Each kind of list could be added 10 items.
We will give you an instance for your reference.
In_access enable Select it to Enable in_ access rule
Out_access enable Select it to Enable out_ access rule
Input/Output Specify current adding rule by selecting input rule or output rule.
Deny/Permit Specify current adding rule by selecting Deny rule or Permit rule.
Protocol Type Filter protocol type. You can select TCP, UDP, ICMP, or IP.
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