[cisco-voip] Enabling CUCM/WebEx/B2B - firewall’ing thoughts?

[Lelio Fulgenzi]

We’re finally taking a turn (not to be confused with TURN - hahaha) at getting CUCM talking to WebEx. Im guessing this is simply a B2B setup with the need for licenses.

The question I have is whether or not I should be activating ACLs anywhere along the path to avoid the expressways from getting hammered and clogging up the logs.

We’ll be enabling this on the MRA expressway pairs for the time being.

From my understanding, MRA uses 5061, 8443, 5222 inbound and B2B uses 5060.

Would it be advisable, to build ACLs only allowing certain address (space) to connect?

This would be on top of any rules/zones we build into the ExpE and CUCM (css).

We’re trying to avoid the obvious impact of scanning Ip addresses/uri’s for sip connectivity.

What are people doing?


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Lelio Fulgenzi, B.A. | Senior Analyst
Computing and Communications Services | University of Guelph
Room 037 Animal Science & Nutrition Bldg | 50 Stone Rd E | Guelph, ON | N1G 2W1<x-apple-data-detectors://1/0>
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