CyberHunter
Local dataset, no network
// Other services

Port 2878: AAP

Port 2878 is assigned by IANA to aap (AAP).

2878

How aap works

Other services
client:2878aapresponse client:2878aapresponse

The client sends a request to port 2878 and the aap 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 2878 dangerous?

We have no specific security note for port 2878. 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 2878

ServicePortTransportDescriptionReferenceUpdated
aap 2878 TCP, UDP AAP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2878, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2878'      # process listening on 2878
sudo lsof -nP -i :2878

macOS

sudo lsof -nP -i :2878

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2878 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2878
netstat -ano | findstr :2878

From another machine

nmap -p 2878 -sV <host>
sudo nmap -sU -p 2878 <host>
nc -zv <host> 2878

Block it in the firewall

sudo ufw deny 2878/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2878" -Direction Inbound -LocalPort 2878 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2878 used for?

Port 2878 is assigned by IANA to aap (AAP).

Is port 2878 TCP or UDP?

Port 2878 is registered for TCP and UDP.

Is it safe to open port 2878?

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 2878 is open?

On Linux run "ss -ltnup 'sport = :2878'", on macOS "lsof -nP -i :2878", and on Windows "netstat -ano | findstr :2878" to see the local process. From another machine, "nmap -p 2878 <host>" shows whether it is reachable.

05 Related
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