Firewall - One way audio - FIXED

Discussion in '3CX Phone System - General' started by Anarethos, Mar 7, 2008.

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  1. Anarethos

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    Hi all!

    I have searched the forum, but did not find any solution that worked, so maybe you can help.

    Here is my configuration

    My 3cx server is on the router/firewall (Kerio Winroute firewall).
    I have 1 Linksys PAP2 that connect to my 3cx server. Works ok.

    What I want to do, is when I am travelling, is to connect with an Voip Sip client to my 3cx server to make call/receive regular call.
    My laptop will act as a regular "internal" extention.

    Here is the settings I put in Kerio
    Source : Internet Destination : Firewall (Server) Port : 5060-5070 Protocol : Tcp + Udp
    Source : Internet Destination : Firewall (Server) Port : 9000-9015 Protocol : Udp
    Source : Internet Destination : Firewall (Server) Port : 5040 Protocol : Tcp
    Source : Internet Destination : Firewall (Server) Port : 3487 Protocol : Udp

    when I do call/receive call from my laptop, I can hear, but my voice is not sent.

    When I run the Firewall Checker, I got Error 10 for all my 9000-9015 ports.


    Anyone can help me?

    Thanks!
     
  2. Anarethos

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    Re: Firewall - One way audio

    Okay!
    FIXED!

    Here is how (may help others)

    by DEFAULT, Kerio as the following rule

    1) Source : Local trafic/Dial-Up Destination : Internet Action : Nat
    2) Source : Firewall Destination : Internet Action : Permit

    You simply have to swap them...
    1) Source : Firewall Destination : Internet Action : Permit
    2) Source : Local trafic/Dial-Up Destination : Internet Action : Nat

    so, when the firewall (running also 3cx in my case) try to access the internet, there is no nat.

    Is it normal that I still receive an error about the fact that I use a public Ip?
     
  3. landfiets

    landfiets New Member

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    It sounds all very strange but congratiolations that you fixed your problem. You can also switch your firewall off, and only have it running on your laptop. Saves a lot of troubles. You don' t need two firewalls.
     
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  4. viktora

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    I would not recommend switching off firewalls for they are quite important regarding the security of your networks. It is always better to work out a reliable way through it...
     
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