RedMax EXtreme EX-LRT Anleitung zur Fehlerbehebung PDF herunterladen (Seite 118)

Oracle SBC Security Guide

The “mode” under the media-sec-policy should be set to ANY. Also, the profile should be configured

with the sdes/mikey-profile that would be used in case of SRTP and the protocol should be set to

SDES/MIKEY, depending on which protocol is required.

When inbound mode=any, the SBC will accept SDP with only RTP description, SDP with only SRTP

description and SDP with 2 m lines having both RTP and SRTP description.

When outbound mode=any, the SBC will insert an SDP with only RTP, only SRTP or with 2 m lines,

supporting both RTP and SRTP, this is controlled under the sdes/mikey-profile:

(sdes-profile)# egress-offer-format

<enumeration> format of offer SDP in 'any' mode

{same-as-ingress | simultaneous-best-effort}

 Same-as-ingress: The SBC will use to build the egress SDP offer the mode received in the ingress

realm. So if the SBC received only RTP in the ingress realm, it will insert only RTP in the egress

SDP, and if it received only SRTP in the ingress SDP, it will set the egress SDP to only SRTP.

 Simultaneous-best-effort: The SBC will insert additional SRTP description in the SDP if the

ingress SDP contained only RTP and vice-versa, so the resultant SDP should contain both RTP

and SRTP media profiles contained in 2 different media lines in the SDP.

# show running-config sdes-profile

sdes-profile

name sdes1

crypto-list AES_CM_128_HMAC_SHA1_80

AES_CM_128_HMAC_SHA1_32

srtp-auth enabled

srtp-encrypt enabled

srtcp-encrypt enabled

egress-offer-format same-as-ingress

use-ingress-session-params srtcp-encrypt

srtp-auth

srtp-encrypt

mki disabled

key

salt

(mikey-profile)# show

mikey-profile

name mikey1

key-exchange-method pre-shared

encr-algorithm AES-CM

auth-algorithm HMAC-SHA1-80 HMAC-SHA1-32

shared-secret

mki disabled

egress-offer-format same-as-ingress

use-ingress-session-params

(mikey-profile)#

(media-sec-policy)# show

media-sec-policy

1 2 ... 113 114 115 116 117 118 119 120 121 122 123 ... 141 142

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