Firewall 

  • Clients (Browser and App) should allow outgoing UDP connections to the public internet and allow return traffic in response. Since our service provider uses dynamic IP addresses, it is not possible to specify a range of IP addresses requests go to.
  • Clients (Browser and App) must also allow incoming connections from chunderm.gll.twilio.com and matrix.twilio.com. Also, they must be allowed to make outgoing connections from any port in the ephemeral range (1024-65535).

 

The following ports / port ranges must be opened in order to ensure the continued usage of voice services:

 

Phone on the browser

 

Component Address Client-side port used Server-side port used Protocol
Signaling chunderw-gll.twilio.com
chunderw-vpc-gll.twilio.com
au1: chunderw-vpc-gll-au1.twilio.com
br1: chunderw-vpc-gll-br1.twilio.com
ie1: chunderw-vpc-gll-ie1.twilio.com
jp1: chunderw-vpc-gll-jp1.twilio.com
sg1: chunderw-vpc-gll-sg1.twilio.com
us1: chunderw-vpc-gll-us1.twilio.com


Any 443 TCP
Presence matrix.twilio.com
Any 443 TCP
RTP Any static IP pulled from the ranges mentioned Any 10,000-20,000 UDP
 Insights  eventgw.twilio.com  Any  443  TCP

 

 Testing firewall and port configuration

For more details, refer to our service provider’s list of network connectivity requirements.