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A-8
Cisco SIP Proxy Server Administrator Guide
Appendix A SIP Compliance
RFC 3263
SIP Security
RFC 3263
SIP DNS Records Usage
Table A-6 SIP Security
Mode Supported?
Encryption Mode
End-to-end No
Hop-by-Hop Yes
Authentication Mode
Basic
1
1. Due to its weak security, basic authentication has been deprecated. This is a
change from RFC 2543. It is not disabled or removed from Cisco SPS, but will no
longer be supported or extended to interwork with new or modified functionality.
We strongly discourage the use of basic authentication.
Yes
Digest Yes
Proxy Yes
Table A-7 SIN DNS Records Usage
DNS Resource Record Type Supported?
AYes
NAPTR Yes
SRV Yes