Source note · SIP scanning and telephony denial of service
For a Webex Calling Local Gateway, Cisco describes the IP address trusted list as the list of hosts and networks from which the gateway expects legitimate VoIP calls, and uses it to protect against toll fraud.
Checked 2026-09-25
To protect against toll fraud, the trusted address list defines a list of hosts and networks from which the Local Gateway expects legitimate VoIP calls.
- Vendor
- Cisco
- Product
- Webex Calling Local Gateway (IOS XE)
- Subsystem
- Toll fraud prevention
- Deployment
- hybrid
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Configure Local Gateway on Cisco IOS XE for Webex Calling — Cisco Systems, Inc. (Webex Help Center) · tier 2 current vendor documentation · Toll Fraud Prevention section
Cite this note
APA
WarmTransfer. (2026, September 25). SIP scanning and telephony denial of service: source note sip-scanning-tdos-lgw-trusted-list-purpose. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-lgw-trusted-list-purpose
BibTeX
@misc{warmtransfer-claim-sip-scanning-tdos-lgw-trusted-list-purpose,
title = {SIP scanning and telephony denial of service: source note sip-scanning-tdos-lgw-trusted-list-purpose},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-lgw-trusted-list-purpose},
note = {Source note sip-scanning-tdos-lgw-trusted-list-purpose, checked 2026-09-25}
}