> ## Documentation Index
> Fetch the complete documentation index at: https://koreai.mintlify.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Europe (EU) Firewall Rules

## Voice Gateway

| Component                           | Protocol | Source IP | Source Port † | Destination     | Destination Port |
| :---------------------------------- | :------- | :-------- | :------------ | :-------------- | :--------------- |
| **Session Border Controller (SBC)** |          |           |               |                 |                  |
| (Agent SBC)                         | TCP/UDP  | ANY       | ANY           | `18.133.179.73` | 5060             |
|                                     | TLS      | ANY       | ANY           | `18.133.179.73` | 5061             |
|                                     | TCP      | ANY       | ANY           | `18.133.179.73` | 8443             |
|                                     | TCP/UDP  | ANY       | ANY           | `13.43.133.73`  | 5060             |
|                                     | TLS      | ANY       | ANY           | `13.43.133.73`  | 5061             |
|                                     | TLS      | ANY       | ANY           | `13.43.133.73`  | 8443             |
|                                     | UDP      | ANY       | ANY           | `18.133.179.73` | 6000-65535       |
|                                     | UDP      | ANY       | ANY           | `13.43.133.73`  | 6000-65535       |

***

## Media Twilio Gateway

| Secure Media (ICE/STUN/SRTP) Edge Locations | Protocol | Source IP | Source Port † | Destination IP Ranges | Destination Port Range |
| :------------------------------------------ | :------- | :-------- | :------------ | :-------------------- | :--------------------- |
| ↳ Stun server                               | UDP      | ANY       | ANY           | `168.86.128.0/18`     | 10000-65535            |

***

## FQDN

| Domain        | Protocol | Source IP | Source Port † | Destination    | Destination Port |
| :------------ | :------- | :-------- | :------------ | :------------- | :--------------- |
| Kore Domain   | TCP      | ANY       | ANY           | `*.kore.ai`    | 443, 8443        |
| Twilio Domain | TCP      | ANY       | ANY           | `*.twilio.com` | 443, 8443        |

***

## Twilio STUN

| Protocol       | Source IP | Source Port † | Destination IP Ranges             | Destination Port Range |
| :------------- | :-------- | :------------ | :-------------------------------- | :--------------------- |
| TCP (TURN TLS) | ANY       | ANY           | `18.156.18.128 - 18.156.18.255`   | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `18.195.48.224 - 18.195.48.255`   | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `52.59.186.0 - 52.59.186.31`      | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `3.249.63.128 - 3.249.63.255`     | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `54.171.127.192 - 54.171.127.255` | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `52.215.127.0 - 52.215.127.255`   | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `52.215.253.0 - 52.215.253.63`    | 443/5349               |
| TCP (TURN TLS) | ANY       | ANY           | `18.156.18.128 - 18.156.18.255`   | 3478                   |
| TCP (TURN TLS) | ANY       | ANY           | `18.195.48.224 - 18.195.48.255`   | 3478                   |
| TCP (TURN TLS) | ANY       | ANY           | `52.59.186.0 - 52.59.186.31`      | 3478                   |
| TCP (TURN TLS) | ANY       | ANY           | `3.249.63.128 - 3.249.63.255`     | 3478                   |
| TCP (TURN TLS) | ANY       | ANY           | `54.171.127.192 - 54.171.127.255` | 3478                   |
| TCP (TURN TLS) | ANY       | ANY           | `52.215.127.0 - 52.215.127.255`   | 3478                   |
| TCP (TURN TLS) | ANY       | ANY           | `52.215.253.0 - 52.215.253.63`    | 3478                   |

***