CyberHunter
Local dataset, no network
// Other services

Port 1265: DSSIAPI

Port 1265 is assigned by IANA to dssiapi (DSSIAPI).

1265

How dssiapi works

Other services
client:1265dssiapiresponse client:1265dssiapiresponse

The client sends a request to port 1265 and the dssiapi 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 1265 dangerous?

We have no specific security note for port 1265. 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 1265

ServicePortTransportDescriptionReferenceUpdated
dssiapi 1265 TCP, UDP DSSIAPI - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1265, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1265'      # process listening on 1265
sudo lsof -nP -i :1265

macOS

sudo lsof -nP -i :1265

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1265 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1265
netstat -ano | findstr :1265

From another machine

nmap -p 1265 -sV <host>
sudo nmap -sU -p 1265 <host>
nc -zv <host> 1265

Block it in the firewall

sudo ufw deny 1265/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1265" -Direction Inbound -LocalPort 1265 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1265 used for?

Port 1265 is assigned by IANA to dssiapi (DSSIAPI).

Is port 1265 TCP or UDP?

Port 1265 is registered for TCP and UDP.

Is it safe to open port 1265?

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 1265 is open?

On Linux run "ss -ltnup 'sport = :1265'", on macOS "lsof -nP -i :1265", and on Windows "netstat -ano | findstr :1265" to see the local process. From another machine, "nmap -p 1265 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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