CyberHunter
Local dataset, no network
// Other services

Port 35355: Altova License Management

Port 35355 is assigned by IANA to altova-lm (Altova License Management), altova-lm-disc (Altova License Management Discovery).

35355

How altova-lm works

Other services
client:35355altova-lmresponse client:35355altova-lmresponse

The client sends a request to port 35355 and the altova-lm service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 35355 dangerous?

We have no specific security note for port 35355. 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 35355

ServicePortTransportDescriptionReferenceUpdated
altova-lm 35355 TCP Altova License Management - 2011-07-07
altova-lm-disc 35355 UDP Altova License Management Discovery - 2011-07-07

// source: IANA service name and port number registry

03 Check it

Which program uses port 35355, and is it reachable?

Linux

sudo ss -ltnup 'sport = :35355'      # process listening on 35355
sudo lsof -nP -i :35355

macOS

sudo lsof -nP -i :35355

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 35355 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 35355
netstat -ano | findstr :35355

From another machine

nmap -p 35355 -sV <host>
sudo nmap -sU -p 35355 <host>
nc -zv <host> 35355

Block it in the firewall

sudo ufw deny 35355/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 35355" -Direction Inbound -LocalPort 35355 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 35355 used for?

Port 35355 is assigned by IANA to altova-lm (Altova License Management), altova-lm-disc (Altova License Management Discovery).

Is port 35355 TCP or UDP?

Port 35355 is registered for TCP and UDP.

Is it safe to open port 35355?

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 35355 is open?

On Linux run "ss -ltnup 'sport = :35355'", on macOS "lsof -nP -i :35355", and on Windows "netstat -ano | findstr :35355" to see the local process. From another machine, "nmap -p 35355 <host>" shows whether it is reachable.

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