TCP/UDP ports used by 7960

[dearjwe]

Does anyone know if there is a specified range of ports that are used by the 7960 phones. In monitoring the network, I see the phones using different ports with each call. I want to close ports via a firewall.

[thisisshanky]

The RTP stream will use udp ports 16384 through 32767.

[dearjwe]

Thanks for the prompt response. Is there a document I can pull off Cisco that specifically states that?

[j.dyer]

http://www.cisco.com/go/safe

choose the IP Telephony Security in Depth whitepaper. Look at Appendix A, Validation lab -- it has a table with all the ports listed as well as example configurations.

John

[sdjono]

SCCP signalling port for Cisco IP Phones is 2000.

[rhegde]

I was trying to build an ACL which should allow those ports between Phones to CM and phones to phone communication. Can any one suggest a list of ports I can use it in the ACL.

Thanks

Rav