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// Other services

Port 700: Extensible Provisioning Protocol

Port 700 is assigned by IANA to epp (Extensible Provisioning Protocol).

700

How epp works

Other services
client:700eppresponse client:700eppresponse

The client sends a request to port 700 and the epp service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Well-known (0-1023)
Category
Other services
01 Security

Is port 700 dangerous?

We have no specific security note for port 700. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 700

ServicePortTransportDescriptionReferenceUpdated
epp 700 TCP, UDP Extensible Provisioning Protocol RFC 5734 -

// source: IANA service name and port number registry

03 Check it

Which program uses port 700, and is it reachable?

Linux

sudo ss -ltnup 'sport = :700'      # process listening on 700
sudo lsof -nP -i :700

macOS

sudo lsof -nP -i :700

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 700 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 700
netstat -ano | findstr :700

From another machine

nmap -p 700 -sV <host>
sudo nmap -sU -p 700 <host>
nc -zv <host> 700

Block it in the firewall

sudo ufw deny 700/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 700" -Direction Inbound -LocalPort 700 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 700 used for?

Port 700 is assigned by IANA to epp (Extensible Provisioning Protocol).

Is port 700 TCP or UDP?

Port 700 is registered for TCP and UDP.

Is it safe to open port 700?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Close the port if nothing on the host needs it.

How do I check if port 700 is open?

On Linux run "ss -ltnup 'sport = :700'", on macOS "lsof -nP -i :700", and on Windows "netstat -ano | findstr :700" to see the local process. From another machine, "nmap -p 700 <host>" shows whether it is reachable.

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