--- title: LearnCube Firewall Settings (updated Feb 2025) description: Configure LearnCube's Firewall Settings for uninterrupted access to our Virtual Classroom and Whiteboard. 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Although we use TURN and STUN servers to improve the connection behind firewalls, we recommend the following settings to help reduce any technical issues.  ### Requirements Ensure that non-web traffic can pass through this port, as some firewall or proxy settings may default to restricting traffic to HTTPS (port 443 only). ### IP Whitelist | **IP RANGE** | **PORTS** | **PORT TYPE** | | --- | --- | --- | | 54.172.60.0 - 54.172.61.255 | 443 | WSS | | 34.203.250.0 - 34.203.251.255 | 443 | WSS | | 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, 3478 |    UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | | 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, 3478 | UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | | 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, 3478 |   UDP/SRTP/SRTCP | ### Domain Whitelist **Please note:** Due to the use of load balancers, IP addresses for the following domains can change. Please whitelist using domain names. | **DOMAINS** | **DESTINATION PORTS** | **PORT TYPE** | | --- | --- | --- | | \*.learncube.com api.learncube.com vcapi.learncube.com vcapi2.learncube.com  vcapiws.learncube.com insights.learncube.com | 443 | HTTPS | | \*.pubnub.com  \*.pndsn.com  \*.pubnub.net.com  \*.pubnub.io  static.learncube.net  ajax.cloudflare.com  res.cloudinary.com  \*.amazonaws.com    mobile-endpoint.twilio.com  ecs.us1.twilio.com endpoint.twilio.com | 443 | HTTPS | | global.vss.twilio.com  sdkgw.us1.twilio.com  global.vss.twilio.com  au1.vss.twilio.com br1.vss.twilio.com  de1.vss.twilio.com ie1.vss.twilio.com  in1.vss.twilio.com   jp1.vss.twilio.com  sg1.vss.twilio.com  us1.vss.twilio.com  us2.vss.twilio.com    | 443 | WSS | |   \*.livekit.cloud    |   443 |   TCP | |   \*.turn.livekit.cloud     |   443 |   TCP | |   \*.host.livekit.cloud    |   3478 |   UDP | |   \*.livekit.cloud \*.turn.livekit.cloud \*.host.livekit.cloud   |   50000-60000 |   UDP | **IMPORTANT:** Once you have whitelisted the relevant IP addresses and domains, please complete a quick firewall test from inside your firewall here: [https://networktest.twilio.com/](https://networktest.twilio.com/) *Document updated: 14 January 2026* [![logo](https://go.learncube.com/hs-fs/hubfs/Assets%20March%202022/logo.png?width=160&height=35&name=logo.png "logo")](https://www.learncube.com/) © 2026 LearnCube. 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