Enterprise HD PoE IP Phone
VIP-2020PT
8.3.7.2 FIREWALL
Firewall Configuration
In this web interface, User 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 types of rules: input access rule and output access rule. Each type
supports at most 10 items.
Through this web page, User 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 User an instance for User reference.
Field name Explanation
Enable Input Rules Select it to Enable Input Rules.
Enable Output Rules Select it to Enable Output Rules.
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 Filter protocol type. User can select TCP, UDP, ICMP, or IP.
Port Range Set the filter Port range.
Src Address
Set source address. It can be single IP address, network
address, complete address 0.0.0.0, or network address similar to
*.*.*.0.
