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// Other services

Port 2578: RVS ISDN DCP

Port 2578 is assigned by IANA to rvs-isdn-dcp (RVS ISDN DCP).

2578

How rvs-isdn-dcp works

Other services
client:2578rvs-isdn-dcpresponse client:2578rvs-isdn-dcpresponse

The client sends a request to port 2578 and the rvs-isdn-dcp 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 2578 dangerous?

We have no specific security note for port 2578. 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 2578

ServicePortTransportDescriptionReferenceUpdated
rvs-isdn-dcp 2578 TCP, UDP RVS ISDN DCP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2578, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2578'      # process listening on 2578
sudo lsof -nP -i :2578

macOS

sudo lsof -nP -i :2578

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2578 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2578
netstat -ano | findstr :2578

From another machine

nmap -p 2578 -sV <host>
sudo nmap -sU -p 2578 <host>
nc -zv <host> 2578

Block it in the firewall

sudo ufw deny 2578/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2578" -Direction Inbound -LocalPort 2578 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2578 used for?

Port 2578 is assigned by IANA to rvs-isdn-dcp (RVS ISDN DCP).

Is port 2578 TCP or UDP?

Port 2578 is registered for TCP and UDP.

Is it safe to open port 2578?

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 2578 is open?

On Linux run "ss -ltnup 'sport = :2578'", on macOS "lsof -nP -i :2578", and on Windows "netstat -ano | findstr :2578" to see the local process. From another machine, "nmap -p 2578 <host>" shows whether it is reachable.

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