https://community.cisco.com/t5/network-security/how-to-allow-rtp-protocol-in-nat-and-access-list-in-fmc/m-p/5076897#M1111561 <P>You need to inspect control plane protocol which initiates RTP connections, e.g. SIP, and allow traffic of this protocol in Access Control Policy. In this case firewall will open pinholes for RTP and do NAT automatically. Inspection of VoIP protocols, like SIP, should be enabled on FTD by default. Look at "show run policy-map".</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 24 Apr 2024 07:41:33 GMT tvotna 2024-04-24T07:41:33Z https://community.cisco.com/t5/network-security/how-to-allow-rtp-protocol-in-nat-and-access-list-in-fmc/m-p/5076709#M1111556 Wed, 24 Apr 2024 03:26:49 GMT https://community.cisco.com/t5/network-security/how-to-allow-rtp-protocol-in-nat-and-access-list-in-fmc/m-p/5076709#M1111556 Pradip Bhattacharya 2024-04-24T03:26:49Z https://community.cisco.com/t5/network-security/how-to-allow-rtp-protocol-in-nat-and-access-list-in-fmc/m-p/5076897#M1111561 <P>You need to inspect control plane protocol which initiates RTP connections, e.g. SIP, and allow traffic of this protocol in Access Control Policy. In this case firewall will open pinholes for RTP and do NAT automatically. Inspection of VoIP protocols, like SIP, should be enabled on FTD by default. Look at "show run policy-map".</P><P>&nbsp;</P><P>&nbsp;</P> Wed, 24 Apr 2024 07:41:33 GMT https://community.cisco.com/t5/network-security/how-to-allow-rtp-protocol-in-nat-and-access-list-in-fmc/m-p/5076897#M1111561 tvotna 2024-04-24T07:41:33Z