VOIP/SIP Best Practice For Ports

Pook
Pook Posts: 143  Ally Member
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in Nebula

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.

All Replies

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,327  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Second Anniversary Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula

    Hi @Pook ,

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

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  • Pook
    Pook Posts: 143  Ally Member
    Fourth Anniversary 100 Comments First Answer Nebula Gratitude

    That would nelp, USG/ATP Flex Series using Nebula Cloud please.

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,327  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Second Anniversary Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Engineer Level 1 - Nebula

    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.

    image.png

    Note

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

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