Firewall Configuration for Flo:One

The below list details the firewall configuration for the Flo:One system to work as required.

Whilst the system typically uses either TCP or UDP we kindly ask that all the below is configured in case there’s a requirement to swap later down on in the service.

Important note: You must ensure SIP ALG is DISABLED across all firewall devices!

In general, it is best practice to use FQDNs and whitelist the domains:

  • callswitchone.com
  • yay.com
  • voipcp.com
  • yealink.com

If your firewall doesn’t support the use of FQDNs then please whitelist the following IP addresses.

‘Best practice’ settings for end users

Yealink Handset Auto-Provisioning #

  • 195.224.255.10 (Port 53)
  • 195.224.255.70 (Port 53)
  • 52.71.103.102 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)
  • 52.29.124.181 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)
  • 3.124.165.251 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)
  • 51.11.241.228 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)
  • 20.19.96.56 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)
  • 20.242.144.0 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)
  • 20.242.144.1 (TCP – Source Port – 1023 to 65535, Destination Port 80, 443, 8443)

Flo-One Auto-Provisioning #

  • 130.211.7.63 (Port 80 & 443 both LAN>WAN and WAN>LAN)
  • 35.186.240.208 (Port 80 & 443 both LAN>WAN and WAN>LAN)
  • 34.111.91.27 (Port 80 & 443 both LAN>WAN and WAN>LAN)

SIP Authentication #

  • 34.105.209.181
  • 34.147.142.100
  • 34.89.77.216
  • 34.89.33.0
  • 35.246.58.184
  • 34.147.181.186
  • 35.234.151.7
  • 35.197.230.12
  • 34.105.130.238
  • 34.89.66.152
  • 34.105.170.20
  • 35.242.140.109
  • 34.105.214.80

RTP Addresses #

  • 35.246.34.97
  • 34.147.198.83
  • 35.246.28.102
  • 34.147.171.124

SIP Ports #

  • 5060
  • 5061

RTP Ports (UDP) #

  • 9998
  • 10000 – 40000

Our industry leading unified communications platform is underpinned by a powerful VoIP telephony system, including a range of advanced call handling and management features, alongside video meetings, CRM Integrations, chat, presence, document sharing and more.

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