Twilio strongly recommends configuring credentials on Elastic SIP trunks because IP ACLs alone do not protect against certain types of attacks.
Checked 2026-10-02
It is highly recommended that you configure User Credentials. IP ACL's alone does not protect against certain types of attacks.
- Vendor
- Twilio
- Product
- Elastic SIP Trunking
- Subsystem
- termination authentication
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Elastic SIP Trunking — Twilio · tier 2 current vendor documentation · Section 'Authentication'
Cite this note
APA
WarmTransfer. (2026, October 2). SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-twilio-acl-alone-weak. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-twilio-acl-alone-weak
BibTeX
@misc{warmtransfer-claim-sip-trunk-authentication-models-twilio-acl-alone-weak,
title = {SIP trunk authentication: registration and static IP and mutual TLS: source note sip-trunk-authentication-models-twilio-acl-alone-weak},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-trunk-authentication-models-twilio-acl-alone-weak},
note = {Source note sip-trunk-authentication-models-twilio-acl-alone-weak, checked 2026-10-02}
}