Port 2427Cisco MGCP
**Cisco MGCP (Media Gateway Control Protocol)** is a protocol developed primarily by Cisco to control media gateways within Voice over IP (VoIP) infrastructures. It enables centralized management of signaling and call control for effective delivery of voice communications across IP networks..
- transport
- udp
- in transit
- cleartext
- assignment
- official
- risk
- 4/10
- lookups
- 7,878
single transport
payload readable on path
registered with iana
caution
rank 645 of 993 · top 65%
Technical Details
what runs on :2427Cisco MGCP (Media Gateway Control Protocol) is a client-server protocol standardized by the IETF (RFC 3435), widely utilized in VoIP networks to facilitate centralized call control architectures. MGCP delegates the intelligence of call setup and management primarily to a call agent, also known as a media gateway controller (MGC), which orchestrates the interaction between gateways and endpoints.
Port 2427 UDP is predominantly used by Cisco voice gateways and call control servers for MGCP signaling. The protocol conveys commands (such as creation, modification, and deletion of call endpoints) and notifications that manage call states. This architecture simplifies network provisioning by centralizing configuration and decision-making.
In use, MGCP enables complex call control scenarios, integrates with legacy telephony equipment, and allows for scalable VoIP deployments. Its centralized nature eases management but also introduces dependencies on the call agent’s availability and security.
Security Information
exposure of :2427risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
network services averages 3.9 across 604 ports — this one sits 0.1 above.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
official
registered with iana for this service — scanners fingerprint it by number
reachable over
udp
udp is connectionless — source addresses are trivially spoofed and it is a reflection favourite
security overview
Common Vulnerabilities:
- IP spoofing or packet interception could disrupt MGCP signaling, leading to call interception or denial of service.
- MGCP’s typical reliance on UDP without encryption makes it susceptible to packet forgery, replay attacks, or eavesdropping.
- Exploitation of poorly secured gateways could facilitate unauthorized call initiation or tampering.
Common Mitigations:
- Segregate VoIP traffic using VLANs and internal firewalls to isolate MGCP signaling from other networks.
- Employ network access controls and device authentication on MGCP-enabled hardware.
- Utilize VPNs or IPsec tunnels to encrypt signaling between gateways and controllers where possible.
- Regularly update device firmware to address known vulnerabilities and disable unnecessary protocols or services on devices.
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risk mix of the 8 listed
- caution100%
0 of 8 encrypted