700
Summary
- // typical exposure
- Restricted (trusted networks only) — RFC 5734 describes EPP as client-server provisioning and recommends firewall or router filtering to restrict inbound access to known, trusted clients.
- // common applications
- EPP client-server provisioning Client-initiated TCP sessions to an EPP server, with TLS-protected EPP messages.
- // if you see it open
- RFC 5734 requires TLS protection and mutual client-server authentication. It describes risks including credential compromise and TCP denial-of-service attacks, and recommends restricting inbound access to known, trusted clients.
About port 700.
Port 700/tcp is assigned to the Extensible Provisioning Protocol (EPP). RFC 5734 maps each EPP session to a single TCP connection between a client and server. The server returns a greeting, then processes client commands and sends responses on that connection.
EPP carries provisioning messages as XML data units framed by a 32-bit length field. RFC 5734 requires TLS to protect exchanges and provide mutual client-server authentication. It also recommends limiting inbound access to known, trusted clients as a defense against denial-of-service attacks.
The assignment and protocol specification establish the intended protocol, but do not show whether a particular host uses this port or how often it appears in traffic. No supplied evidence establishes malware associations or unofficial uses. For an EPP service, restrict access to authorized clients and validate the server and client identities during TLS setup.
- Intended use
- EPP client-server provisioning over TCP, as specified in RFC 5734.
- Recommended exposure
- Restricted to known, trusted clients; the protocol specification recommends inbound filtering.
- Security
- TLS protection and mutual authentication are required by RFC 5734.
- Observed deployment or prevalence
- Unknown; assignment does not establish host use or traffic volume.
- Service
- Extensible Provisioning Protocol (EPP) [Confirmed] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
- Transport mapping
- EPP session over a single TCP connection; TLS protection required [Confirmed] — https://www.rfc-editor.org/rfc/rfc5734.txt
- Port assignment
- IANA assigned TCP system port 700 to EPP [Confirmed] — https://www.rfc-editor.org/rfc/rfc5734.txt
- Deployment and prevalence
- Unknown from supplied evidence [Unknown] — https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
Service assignments.
| Name | Protocol | Description | Open frequency |
|---|---|---|---|
| epp | UDP | Extensible Provisioning Protocol | 0.03% |
| epp | TCP | Extensible Provisioning Protocol | 0.03% |
Service assignments from the IANA Service Name and Transport Protocol Port Number Registry, with open-frequency data from nmap-services.