Firewall Configuration
This article is intended for network administrators, particularly firewalls and web security administrators. It will help you configure and test your network to support Blitzz.
Some firewalls will not permit applications such as Blitzz (or any applications you have not specifically allowed) to access the internet and it is necessary to open ports for Blitzz servers in the corporate firewall/proxy. It's necessary that the customer's on-premise infrastructure allows the Transmission Control Protocol (TCP) to flow for incoming and outgoing network traffic for Blitzz.
Required IP Addresses/ports to whitelist
| Domains / IP Address | Protocol | Purpose | |
| 1 | *.blitzz.co (recommended) | (HTTPS/443) | Recommended to recognize any subdomains of blitzz.co. |
| 2 | {company-subdomain}.blitzz.co | (HTTPS/443) | Replace {company-subdomain} with your subdomain. Eg. acme.blitzz.co |
| 3 | services.blitzz.co | (HTTPS/443) | Used to connect to backend services and Push notifications |
| 4 | media.blitzz.co | (HTTPS/443) | Used for uploading media |
| 5 | analyticapi.blitzz.co | (HTTPS/443) | Data analytics |
| 6 | storageapi.blitzz.co | (HTTPS/443) | Accessing and storing media |
| 7 | blitzzmedia.blob.core.windows.net | (HTTPS/443) | Accessing and storing media |
| 8 | *.launchdarkly.com | (HTTPS/443) | Used for Preview of new features and access to premium features. |
| 9 | 159.69.72.82 138.201.23.91 94.130.129.237 | (HTTPS/443) | Localization Strings to support region-specific languages |
| 10 | api.twilio.com | (HTTPS/443) | REST API for Creating rooms |
| 11 | video.twilio.com | (HTTPS/443) | REST API for video-related features |
| 12 | global.vss.twilio.com | (WSS/443) | Signaling Communication |
| 13 | sdkgw.us1.twilio.com | (WSS/443) | Video SDK for Android, iOS, and JavaScript |
Recommended for logs and debugging
We use Google Firebase for capturing logs when you encounter an issue or need help. We recommend enabling these IP addresses as well:
| * | 5228 (TCP) 5229 (TCP) 5230 (TCP) | If your organization has a firewall that restricts the traffic to or from the Internet, you'll need to configure it to allow connectivity with GCM. The ports to open are 5228, 5229, and 5230. GCM typically only uses 5228, but it sometimes uses 5229 and 5230. GCM doesn't provide specific IPs. It changes IPs frequently. https://firebase.google.com/docs/cloud-messaging/concept-options |
For Call Recordings
Call Recording
Following ports are required only if you are using the Call Recording feature
If you have recording enabled, these are the servers through which your calls can be routed. The default configuration is US West Coast. If you prefer to change the region, please contact our support team. Learn more about media regions here.
You only need to whitelist any one region. Please note that this is not where your final recordings will be stored. Final recordings will be stored in your custom storage endpoint (learn more)
| Server IP Address Range | Ports | Region | |
| 1 | 34.216.110.128 - 34.216.110.159 54.244.51.0 - 54.244.51.255 44.234.69.0 - 44.234.69.127 | 10,000 - 60,000 UDP/SRTP/SRTCP | US West Coast (Oregon) - Default |
| 2 | 34.203.254.0 - 34.203.254.255 54.172.60.0 - 54.172.61.255 34.203.250.0 - 34.203.251.255 3.235.111.128 - 3.235.111.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | US East Coast (Virginia) |
| 3 | 13.210.2.128 - 13.210.2.159 54.252.254.64 - 54.252.254.127 3.25.42.128 - 3.25.42.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | Australia |
| 4 | 18.231.105.32 - 18.231.105.63 177.71.206.192 - 177.71.206.255 18.230.125.0 - 18.230.125.127 | 10,000 - 60,000 UDP/SRTP/SRTCP | Brazil |
| 5 | 52.59.186.0 - 52.59.186.31 18.195.48.224 - 18.195.48.255 18.156.18.128 - 18.156.18.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | Germany |
| 6 | 52.215.253.0 - 52.215.253.63 54.171.127.192 - 54.171.127.255 52.215.127.0 - 52.215.127.255 3.249.63.128 - 3.249.63.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | Ireland |
| 7 | 52.66.193.96 - 52.66.193.127 52.66.194.0 - 52.66.194.63 3.7.35.128 - 3.7.35.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | India |
| 8 | 13.115.244.0 - 13.115.244.31 54.65.63.192 - 54.65.63.255 18.180.220.128 - 18.180.220.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | Japan |
| 9 | 13.229.255.0 - 13.229.255.31 54.169.127.128 - 54.169.127.191 18.141.157.128 - 18.141.157.255 | 10,000 - 60,000 UDP/SRTP/SRTCP | Singapore |
Test your network
Run these diagnostic tests to ensure your network is configured correctly: https://help.blitzz.co/support/solutions/articles/44001950025-diagnostic-tests