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// Other services

Port 2238: AVIVA SNA SERVER

Port 2238 is assigned by IANA to aviva-sna (AVIVA SNA SERVER).

2238

How aviva-sna works

Other services
client:2238aviva-snaresponse client:2238aviva-snaresponse

The client sends a request to port 2238 and the aviva-sna 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 2238 dangerous?

We have no specific security note for port 2238. 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 2238

ServicePortTransportDescriptionReferenceUpdated
aviva-sna 2238 TCP, UDP AVIVA SNA SERVER - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2238, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2238'      # process listening on 2238
sudo lsof -nP -i :2238

macOS

sudo lsof -nP -i :2238

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2238 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2238
netstat -ano | findstr :2238

From another machine

nmap -p 2238 -sV <host>
sudo nmap -sU -p 2238 <host>
nc -zv <host> 2238

Block it in the firewall

sudo ufw deny 2238/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2238" -Direction Inbound -LocalPort 2238 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2238 used for?

Port 2238 is assigned by IANA to aviva-sna (AVIVA SNA SERVER).

Is port 2238 TCP or UDP?

Port 2238 is registered for TCP and UDP.

Is it safe to open port 2238?

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 2238 is open?

On Linux run "ss -ltnup 'sport = :2238'", on macOS "lsof -nP -i :2238", and on Windows "netstat -ano | findstr :2238" to see the local process. From another machine, "nmap -p 2238 <host>" shows whether it is reachable.

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