VOIP/SIP Best Practice For Ports

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Pook
Pook Posts: 142  Ally Member
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Hi Guys

Can anyone advise best practice for making sure all required ports are open for cloud hosted handsets? Obviously this is not a NAT rule so that leaves using the security policy section for allowing the ports and IP addresses of the service provider.

Really appreciate any feedback as to what others are doing, we are using Callswitch.

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  • Zyxel_Judy
    Zyxel_Judy Posts: 1,209  Zyxel Employee
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    Hi @Pook ,

    Could you please let us know which model you want to configure for VoIP/SIP?

    Share yours now! https://bit.ly/4aO0BMF

    Judy

  • Pook
    Pook Posts: 142  Ally Member
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    That would nelp, USG/ATP Flex Series using Nebula Cloud please.

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,209  Zyxel Employee
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    Hi @Pook ,

    If your SIP server supports the SIP over NAT scenario, please go to Configure > Firewall > Firewall Setting > SIP ALG to enable SIP ALG and implement the configuration.

    Note

    SIP Signaling Port: If you are using a custom UDP port number (not 5060) for SIP traffic, enter it here.

    Share yours now! https://bit.ly/4aO0BMF

    Judy

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