08-05-2014 05:28 PM - edited 03-16-2019 11:38 PM
When a CUCM is encrypted;
1) It uses TLS for signaling and can fallback to TCP, correct?
2)for UDP it uses SRTP , correct?
3)any doc showing the encrypted ports uses?
thanks
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08-05-2014 08:29 PM
Correct, TLS fallbacks to TCP in mixed mode.
Voice uses SRTP if the Phone security profile is set for SRTP (Encrypted).
Here is the port list:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/10_0_1/CUCM_BK_T537717B_00_tcp-port-usage-guide-100/CUCM_BK_T537717B_00_tcp-port-usage-guide-100_chapter_01.html
08-06-2014 10:37 AM
08-05-2014 08:29 PM
Correct, TLS fallbacks to TCP in mixed mode.
Voice uses SRTP if the Phone security profile is set for SRTP (Encrypted).
Here is the port list:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/port/10_0_1/CUCM_BK_T537717B_00_tcp-port-usage-guide-100/CUCM_BK_T537717B_00_tcp-port-usage-guide-100_chapter_01.html
08-06-2014 09:44 AM
thanks George. Now, for the SRTP ports, can they be the same as the RTP ports? Reason I asked is we are already allowing the RTP ports and wondering if I have to create another firewall rules just for SRTP
thanks
08-06-2014 10:37 AM
RTP and SRTP uses the same port range.
08-06-2014 12:13 PM
thanks
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