CyberHunter
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// Other services

Port 8770: Digital Photo Access Protocol (iPhoto)

Port 8770 is assigned by IANA to dpap (Digital Photo Access Protocol (iPhoto)).

8770

How dpap works

Other services
client:8770dpapresponse client:8770dpapresponse

The client sends a request to port 8770 and the dpap 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
Registered (1024-49151)
Category
Other services
01 Security

Is port 8770 dangerous?

We have no specific security note for port 8770. 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 8770

ServicePortTransportDescriptionReferenceUpdated
dpap 8770 TCP, UDP Digital Photo Access Protocol (iPhoto) - 2004-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 8770, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8770'      # process listening on 8770
sudo lsof -nP -i :8770

macOS

sudo lsof -nP -i :8770

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8770 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8770
netstat -ano | findstr :8770

From another machine

nmap -p 8770 -sV <host>
sudo nmap -sU -p 8770 <host>
nc -zv <host> 8770

Block it in the firewall

sudo ufw deny 8770/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8770" -Direction Inbound -LocalPort 8770 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8770 used for?

Port 8770 is assigned by IANA to dpap (Digital Photo Access Protocol (iPhoto)).

Is port 8770 TCP or UDP?

Port 8770 is registered for TCP and UDP.

Is it safe to open port 8770?

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 8770 is open?

On Linux run "ss -ltnup 'sport = :8770'", on macOS "lsof -nP -i :8770", and on Windows "netstat -ano | findstr :8770" to see the local process. From another machine, "nmap -p 8770 <host>" shows whether it is reachable.

05 Related
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