4551
Summary
- // if you see it open
- RFC 5677 does not provide mechanisms to secure communication between a mobile node and Mobility Server; it assumes lower-layer or system-specific protections and recommends careful analysis before deployment.
About port 4551/tcp.
IANA registers TCP port 4551 as ieee-mih for “MIH Services” and cites RFC 5677. RFC 5677 describes discovery and transport for IEEE 802.21 Media Independent Handover (MIH) mobility-service messages. It does not establish that any particular host runs this service or that it should be reachable from the public internet.
The framework covers information, event, and command services used to support handover preparation and decisions. RFC 5677 says MIH peers can exchange messages over TCP or UDP after discovery; this profile covers only the registered TCP assignment. The supplied evidence does not identify specific implementations or observed deployments.
RFC 5677 states that it does not provide mechanisms to secure communication between a mobile node and Mobility Server, relying instead on lower-layer or system-specific protections. It recommends careful analysis before deployment. Treat an exposed listener as requiring deployment-specific verification of protections and intended peers; the sources do not establish a general public-facing audience or justify an internet-facing access policy.
- Exposure
- Unknown. The supplied protocol description does not establish a public-internet audience or recommended access category.
- Protocol
- IANA registers TCP 4551 as
ieee-mih(“MIH Services”), citing RFC 5677. - Security
- RFC 5677 specifies no mechanisms for securing mobile-node to Mobility Server communication; it assumes lower-layer or system-specific protections and recommends careful analysis before deployment.
- Service name
ieee-mih— MIH Services [Confirmed] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
Protocol role
transports IEEE 802.21 MIH mobility-service messages between discovered peers
- RFC reference
- RFC 5677, IEEE 802.21 Mobility Services Framework Design (MSFD) [Confirmed] — https://www.rfc-editor.org/rfc/rfc5677.txt
- Transport options
- RFC 5677 describes TCP or UDP for MIH peer messages; this entry concerns TCP only [Confirmed] — https://www.rfc-editor.org/rfc/rfc5677.txt
- Security mechanisms
- this framework does not provide mechanisms to secure mobile-node to Mobility Server communication [Confirmed] — https://www.rfc-editor.org/rfc/rfc5677.txt
- Public-internet audience
- not established by the supplied protocol description [Unknown] — https://www.rfc-editor.org/rfc/rfc5677.txt
About port 4551/udp.
IANA assigns UDP port 4551 the service name ieee-mih and describes it as “MIH Services,” referencing RFC 5677. This identifies the registered purpose, not what runs on a particular host. The supplied evidence does not establish deployment, traffic prevalence, or whether a specific endpoint is reachable from the public internet.
RFC 5677 describes transport options for IEEE 802.21 Media Independent Handover messages between discovered MIH peers. It says MIH information may use UDP or TCP; that protocol-level option does not establish observed traffic on this UDP port. The framework covers mobility-service discovery and transport for handover support.
RFC 5677 does not provide mechanisms to secure communication between a mobile node and a Mobility Server. It assumes lower-layer or system-specific security and recommends careful analysis before deployment. A service using this protocol therefore needs suitable protections in its deployment; the supplied evidence does not establish implementation security or a recommended public exposure category.
- Exposure
- Unknown — the assignment and protocol description do not establish intended public reachability or deployment.
- Security
- RFC 5677 provides no communication security mechanisms between a mobile node and Mobility Server; it assumes lower-layer or system-specific protections.
- Analyst note
- The registration identifies an assigned service purpose, not a verified host, active service, or observed traffic.
- IANA service
ieee-mih, described as “MIH Services” [Confirmed] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
Protocol purpose
Transport framework for IEEE 802.21 Media Independent Handover messages between discovered peers
- Transport options
- RFC 5677 describes MIH peer exchange over UDP or TCP; this does not establish observed use of UDP port 4551 [Confirmed] — https://www.rfc-editor.org/rfc/rfc5677.txt
- Endpoint deployment or public reachability
- Unknown [Unknown] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
Service assignments.
| Name | Protocol | Description | Open frequency |
|---|---|---|---|
| ieee-mih | UDP | MIH Services | 0.03% |
| ieee-mih | TCP | MIH Services | 0.00% |
Service assignments from the IANA Service Name and Transport Protocol Port Number Registry, with open-frequency data from nmap-services.