CyberHunter
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// Other services

Port 2702: SMS XFER

Port 2702 is assigned by IANA to sms-xfer (SMS XFER).

2702

How sms-xfer works

Other services
client:2702sms-xferresponse client:2702sms-xferresponse

The client sends a request to port 2702 and the sms-xfer 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 2702 dangerous?

We have no specific security note for port 2702. 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 2702

ServicePortTransportDescriptionReferenceUpdated
sms-xfer 2702 TCP, UDP SMS XFER - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2702, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2702'      # process listening on 2702
sudo lsof -nP -i :2702

macOS

sudo lsof -nP -i :2702

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2702 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2702
netstat -ano | findstr :2702

From another machine

nmap -p 2702 -sV <host>
sudo nmap -sU -p 2702 <host>
nc -zv <host> 2702

Block it in the firewall

sudo ufw deny 2702/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2702" -Direction Inbound -LocalPort 2702 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2702 used for?

Port 2702 is assigned by IANA to sms-xfer (SMS XFER).

Is port 2702 TCP or UDP?

Port 2702 is registered for TCP and UDP.

Is it safe to open port 2702?

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 2702 is open?

On Linux run "ss -ltnup 'sport = :2702'", on macOS "lsof -nP -i :2702", and on Windows "netstat -ano | findstr :2702" to see the local process. From another machine, "nmap -p 2702 <host>" shows whether it is reachable.

05 Related
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