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// Other services

Port 2945: H248 Binary

Port 2945 is assigned by IANA to h248-binary (H248 Binary).

2945

How h248-binary works

Other services
client:2945h248-binaryresponse client:2945h248-binaryresponse

The client sends a request to port 2945 and the h248-binary service answers.

Transport
TCP · UDP · SCTP
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 2945 dangerous?

We have no specific security note for port 2945. 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 2945

ServicePortTransportDescriptionReferenceUpdated
h248-binary 2945 TCP, UDP, SCTP H248 Binary - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2945, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2945'      # process listening on 2945
sudo lsof -nP -i :2945

macOS

sudo lsof -nP -i :2945

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2945 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2945
netstat -ano | findstr :2945

From another machine

nmap -p 2945 -sV <host>
sudo nmap -sU -p 2945 <host>
nc -zv <host> 2945

Block it in the firewall

sudo ufw deny 2945/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2945" -Direction Inbound -LocalPort 2945 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2945 used for?

Port 2945 is assigned by IANA to h248-binary (H248 Binary).

Is port 2945 TCP or UDP?

Port 2945 is registered for TCP and UDP and SCTP.

Is it safe to open port 2945?

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 2945 is open?

On Linux run "ss -ltnup 'sport = :2945'", on macOS "lsof -nP -i :2945", and on Windows "netstat -ano | findstr :2945" to see the local process. From another machine, "nmap -p 2945 <host>" shows whether it is reachable.

05 Related
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