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// Other services

Port 1448: OpenConnect License Manager

Port 1448 is assigned by IANA to oc-lm (OpenConnect License Manager).

1448

How oc-lm works

Other services
client:1448oc-lmresponse client:1448oc-lmresponse

The client sends a request to port 1448 and the oc-lm 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 1448 dangerous?

We have no specific security note for port 1448. 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 1448

ServicePortTransportDescriptionReferenceUpdated
oc-lm 1448 TCP, UDP OpenConnect License Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1448, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1448'      # process listening on 1448
sudo lsof -nP -i :1448

macOS

sudo lsof -nP -i :1448

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1448 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1448
netstat -ano | findstr :1448

From another machine

nmap -p 1448 -sV <host>
sudo nmap -sU -p 1448 <host>
nc -zv <host> 1448

Block it in the firewall

sudo ufw deny 1448/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1448" -Direction Inbound -LocalPort 1448 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1448 used for?

Port 1448 is assigned by IANA to oc-lm (OpenConnect License Manager).

Is port 1448 TCP or UDP?

Port 1448 is registered for TCP and UDP.

Is it safe to open port 1448?

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 1448 is open?

On Linux run "ss -ltnup 'sport = :1448'", on macOS "lsof -nP -i :1448", and on Windows "netstat -ano | findstr :1448" to see the local process. From another machine, "nmap -p 1448 <host>" shows whether it is reachable.

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