Port 2000: SCCP
Port 2000 is SCCP, Cisco's Skinny Client Control Protocol used by Cisco IP phones to talk to a Cisco Unified Communications Manager. It is a lightweight alternative to SIP within Cisco VoIP deployments.
TCPVoIP & streamingUnencrypted by defaultIANA assigned
| Port number | 2000 |
|---|---|
| Service | Cisco Skinny Client Control Protocol |
| Protocol | TCP |
| Category | VoIP & streaming |
| Default encryption | No |
Security note. Port 2000 is not encrypted by default. Restrict it to trusted networks, or use an encrypted alternative where one exists, to avoid exposing credentials and data in transit.
Frequently asked questions
What is port 2000 used for?
Port 2000 is SCCP, Cisco's Skinny Client Control Protocol used by Cisco IP phones to talk to a Cisco Unified Communications Manager. It is a lightweight alternative to SIP within Cisco VoIP deployments.
Is port 2000 TCP or UDP?
Port 2000 (SCCP) uses TCP.
Is port 2000 secure?
Port 2000 is not encrypted by default. Where possible, use an encrypted alternative or tunnel it over TLS or a VPN.
Should I open port 2000 on my firewall?
Only if you specifically need SCCP. Expose it to the smallest set of trusted sources, and never open database or Windows-service ports to the whole internet.