I'm using SIP inbound calls for Vapi Assistants. Is there any way to create a secure authentication with username and password, or by source IP? Just to avoid any problem of receiving unexpected calls, or call attacks. #1245660177953194066

@Marcelo Ferracini Absolutely, securing your SIP endpoints is crucial to prevent unauthorized use and potential call attacks. VAPI supports several methods to authenticate SIP calls: 1. **Username and Password**: You can use SIP Digest Authentication, which requires a username and password when setting up the SIP endpoint. This is a common method for authenticating SIP users. 2. **IP Whitelisting**: You can configure your system to only accept inbound SIP calls from known, trusted IP addresses. This method is known as IP whitelisting and ensures that only calls from these IPs are allowed through. 3. **TLS Encryption**: For an additional layer of security, consider using Transport Layer Security (TLS) to encrypt the signaling. This prevents eavesdropping and tampering with the SIP messages. 4. **SRTP**: Secure Real-time Transport Protocol (SRTP) can be used to encrypt the media stream, ensuring that the voice data is also secure. To implement these security measures, you'll need to configure your SIP infrastructure accordingly. If you need specific instructions on how to set up these authentication methods with VAPI, please ask support for more info on this.

How can I set up these authentication methods with VAPI in my Assistant ?

You can read this guide; it showcases how you can connect with your SIP provider. https://www.notion.so/SIP-be5179f856e046688c69eba817e7fcc3 https://www.notion.so/SIP-Inbound-Guide-1f0789ae62024748a62a6d81076b9f32 https://www.notion.so/SIP-Outbound-Guide-997d66df35284295b7149fc10c82f3e8 And do let me know if you need any other help.