We have 2 different organisations who both use Cisco UCM's. We have sip trunks set up between us (leased line) for internal dialing. It works.
I'm looking at the Network Protection menu (VoIP) and wondering if I should use this instead? And how would we use it? Is there any advantage?
ORGANISATION A (Cisco ASA)
CUCM 1, 2, 3 & 4 (10.3.1.1-4)
Voice Networks A (10.3.0.0/16)
ORGANISATION B (Sophos UTM)
CUCM 5, 6, 7 & 8 (10.10.0.1.1-4)
Voice networks B (10.10.0.0/16)
We allow:
B > ANY > A (A sets the firewall rules for incoming traffic) eg only allow SIP from CUCM 5,6,7,8 to CUCM 1,2,3,4 & RTP from Voice Networks B > Voice networks A
A > ANY > B (B sets the firewall rules for incoming traffic) eg only allow SIP from CUCM 1,2,3,4 to CUCM 5,6,7,8 & RTP from Voice Networks A > Voice networks B
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