VOIP/SIP Best Practice For Ports

Pook
Pook Posts: 143  Ally Member
First Comment First Answer Friend Collector Nebula Gratitude
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.

Accepted Solution

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,498  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
    Answer ✓

    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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All Replies

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,498  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security 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
    First Comment First Answer Friend Collector Nebula Gratitude

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

  • Zyxel_Judy
    Zyxel_Judy Posts: 1,498  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
    Answer ✓

    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.

    Be a community MVP_1920x200.jpg

    Engage in the Community, become an MVP, and win exclusive prizes!

    https://bit.ly/Community_MVP

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