Firewall Rules

Firewall Rules - SIP Proxy




Traffic From To Source Port Destination Port
SIP/TLS SIP Proxy SBC 1024 – 65535 Defined on the SBC
SIP/TLS SBC SIP Proxy Defined on the SBC 5061



Firewall Rules - Media Processor


Traffic From To Source Port Destination Port
UDP/SRTP Media Processor SBC 49152 – 53247 Defined on the SBC
UDP/SRTP SBC Media Processor Defined on the SBC 49152 – 53247



The SIP Proxy and Media Proxy above should resolve to all IP Addresses of sip-all.pstnhub.microsoft.com


When defining the Ports always a minimum of 2 ports per concurrent call