Ports and protocols

Read on 2026-10-15. Confirm before relying.

• 80 TCP Outbound HTTP for sign-in, reporting, and support pages. Community port article
• 443 TCP Outbound HTTPS for sign-in, reporting, and support. Community port article
• 1024-65535 UDP Outbound RTP between Five9 applications. Without a stateful firewall, allow the return path. WebRTC also sends STUN on these ports. WebRTC community article
• 2200-2300 TCP Outbound Encrypted Java RMI on the community softphone table. Java Agent and Supervisor desktops left the customer portal after 1 August 2026. Confirm whether your site still launches Java admin. Java application requirements
• 5060-5067 UDP Outbound SIP for the agent application. Community port article
• 5080 UDP Outbound SIP signaling on the Five9 SIP proxy. Community port article
• 5081 TCP Outbound SIP over TLS on the Five9 SIP proxy. Community port article
• 8000-8015 UDP Outbound Source ports the article lists for desktop RTP. Community port article
• 8080/8081 TCP Outbound Network assessment at quality.five9.com. Community port article
• 8083 TCP Local Five9 Softphone Service. The article says to keep other processes off it, and to open it on the host firewall when VDI needs it. Community port article
• 8843 TCP Outbound HTTPS download of Five9 applications and API. Community port article
• 8880 TCP Outbound HTTP download of Five9 applications. Community port article
• 443 TCP Outbound Supervisor PC to WEM cloud, application access. Supervisor workstation requirements
• 4443 TCP Outbound Supervisor or admin workstation to the VO cloud for the Interaction Analytics UI. Supervisor workstation requirements