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// Other services

Port 1948: eye2eye

Port 1948 is assigned by IANA to eye2eye (eye2eye).

1948

How eye2eye works

Other services
client:1948eye2eyeresponse client:1948eye2eyeresponse

The client sends a request to port 1948 and the eye2eye 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 1948 dangerous?

We have no specific security note for port 1948. 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 1948

ServicePortTransportDescriptionReferenceUpdated
eye2eye 1948 TCP, UDP eye2eye - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1948, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1948'      # process listening on 1948
sudo lsof -nP -i :1948

macOS

sudo lsof -nP -i :1948

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1948 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1948
netstat -ano | findstr :1948

From another machine

nmap -p 1948 -sV <host>
sudo nmap -sU -p 1948 <host>
nc -zv <host> 1948

Block it in the firewall

sudo ufw deny 1948/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1948" -Direction Inbound -LocalPort 1948 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1948 used for?

Port 1948 is assigned by IANA to eye2eye (eye2eye).

Is port 1948 TCP or UDP?

Port 1948 is registered for TCP and UDP.

Is it safe to open port 1948?

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 1948 is open?

On Linux run "ss -ltnup 'sport = :1948'", on macOS "lsof -nP -i :1948", and on Windows "netstat -ano | findstr :1948" to see the local process. From another machine, "nmap -p 1948 <host>" shows whether it is reachable.

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