VOIP/SIP Best Practice For Ports

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Pook
Pook Posts: 153 image  Master 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: 2,315 image  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.

    Zyxel_Judy

    Untitled Image

All Replies

  • Zyxel_Judy
    Zyxel_Judy Posts: 2,315 image  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?

    Zyxel_Judy

    Untitled Image
  • Pook
    Pook Posts: 153 image  Master 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: 2,315 image  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.

    Zyxel_Judy

    Untitled Image

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