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Firewall Checker

Discussion in '3CX Phone System - General' started by petewatterschats, Feb 28, 2016.

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  1. petewatterschats

    petewatterschats New Member

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    Firewall Checker

    Setup port forwarding, firewall checker gave errors on ports 9000-9255
    every 21 port gave error "no response received or port mapping is closed - Port forwarding not configured correctly"

    Ports 9256-9500 not checked by firewall checker

    Use Liksys example as a guide for setting up port forwarding
     
  2. leejor

    leejor Well-Known Member

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    How many ports you open in the 9000 range all depends on how many VoIP channels, and services, you plan on using. If it is a simple system, then you won't use all of them.

    http://www.3cx.com/blog/docs/ports-used/

    I just do 9000 to 9049 , which is sufficient (used to be the 3CX default a while ago) for basic VoIP traffic. I believe it is two channels per call.

    Some ports may be "intercepted" by other processes running on your system.
     
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