4336
Summary
- // if you see it open
- TLS is specified. Call Home reverses the TCP connection initiator while retaining TLS-server and RESTCONF-server roles. Port assignment does not establish secure configuration or host exposure.
- // common applications
- RESTCONF Call Home The network element acting as RESTCONF server initiates the TCP connection to a RESTCONF client; host-specific traffic or listening state is not established.
About port 4336.
IANA assigns TCP port 4336 to restconf-ch-tls, RESTCONF Call Home over TLS. RFC 8071 describes a RESTCONF server initiating a secure connection to a RESTCONF client. The assignment identifies the protocol associated with the port; it does not establish that a particular host runs or exposes it. Whether this port belongs on the public internet is Unknown from the supplied evidence.
In call home, the network element initiates the TCP connection while retaining its TLS-server and RESTCONF-server roles. RFC 8071 frames the mechanism for network-management scenarios, including devices behind firewalls or NAT. The port number alone does not show which endpoint initiates a connection in a specific deployment.
The protocol uses TLS, but that does not by itself establish safe configuration or justify unrestricted reachability. Apply access controls appropriate to the intended management relationship and verify peer identity as required by the protocol. No supplied measurement establishes prevalence, observed exposure, or malware association.
- Protocol
- RESTCONF Call Home over TLS is the registered TCP 4336 service; actual deployment on a host is Unknown.
- Exposure
- Unknown. The evidence describes a network-management protocol but does not establish the intended audience or exposure policy for a particular deployment.
- Security
- TLS is specified, and call home reverses the TCP connection initiator while retaining the server's TLS and RESTCONF roles. Port assignment alone does not establish secure configuration.
- IANA service name
restconf-ch-tls[Confirmed] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
Protocol purpose
RESTCONF server initiates a secure connection to a RESTCONF client
- Registered description
- RESTCONF Call Home (TLS) [Confirmed] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
- Deployment on any particular host
- Unknown [Unknown] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
Service assignments.
| Name | Protocol | Description | Open frequency |
|---|---|---|---|
| restconf-ch-tls | TCP | RESTCONF Call Home (TLS) | 0.00% |
Service assignments from the IANA Service Name and Transport Protocol Port Number Registry, with open-frequency data from nmap-services.