Source note · SIP scanning and telephony denial of service
Cisco's hardening guide recommends Layer 3/4 access control lists at interface entry points, applied before CUBE processes the traffic, plus the Zone-Based Firewall for inspection.
Checked 2026-09-25
- Vendor
- Cisco
- Product
- Cisco Unified Border Element (CUBE)
- Subsystem
- Hardening - network filtering
- Deployment
- on-premises
- Region
- not restricted
- Release range
- as of 2023-04-10
- Checked
- 2026-09-25
Sources
- Cisco Guide to Harden Cisco Unified Border Element (CUBE) Enterprise Devices — Cisco Systems · tier 2 current vendor documentation · Access control lists / Zone-Based Firewall sections
Cite this note
APA
WarmTransfer. (2026, September 25). SIP scanning and telephony denial of service: source note sip-scanning-tdos-harden-acl-zbfw. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-harden-acl-zbfw
BibTeX
@misc{warmtransfer-claim-sip-scanning-tdos-harden-acl-zbfw,
title = {SIP scanning and telephony denial of service: source note sip-scanning-tdos-harden-acl-zbfw},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-scanning-tdos-harden-acl-zbfw},
note = {Source note sip-scanning-tdos-harden-acl-zbfw, checked 2026-09-25}
}