Source note · SRTP and media encryption negotiation
Cisco's CUBE hardening guide recommends trimming SRTP ciphers to prefer AEAD_AES_256_GCM and then AEAD_AES_128_GCM, and warns that some older Cisco or peer devices may not support AEAD ciphers.
Checked 2026-09-23
- Vendor
- Cisco
- Product
- Cisco Unified Border Element (CUBE) Enterprise
- Subsystem
- hardening
- Deployment
- on-premises
- Region
- not restricted
- Release range
- guide revision 2023-04-10
- Checked
- 2026-09-23
Sources
- Cisco Guide to Harden Cisco Unified Border Element (CUBE) Enterprise Devices — Cisco Systems · tier 2 current vendor documentation · Section on trimming insecure SRTP ciphers
Cite this note
APA
WarmTransfer. (2026, September 23). SRTP and media encryption negotiation: source note srtp-media-security-cube-hardening-aead-first. WarmTransfer. https://warmtransfer.net/knowledge/claims/srtp-media-security-cube-hardening-aead-first
BibTeX
@misc{warmtransfer-claim-srtp-media-security-cube-hardening-aead-first,
title = {SRTP and media encryption negotiation: source note srtp-media-security-cube-hardening-aead-first},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/srtp-media-security-cube-hardening-aead-first},
note = {Source note srtp-media-security-cube-hardening-aead-first, checked 2026-09-23}
}