CyberHunter
Local dataset, no network
// Other services

Port 1055: ANSYS - License Manager

Port 1055 is assigned by IANA to ansyslmd (ANSYS - License Manager).

1055

How ansyslmd works

Other services
client:1055ansyslmdresponse client:1055ansyslmdresponse

The client sends a request to port 1055 and the ansyslmd 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 1055 dangerous?

We have no specific security note for port 1055. 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 1055

ServicePortTransportDescriptionReferenceUpdated
ansyslmd 1055 TCP, UDP ANSYS - License Manager - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1055, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1055'      # process listening on 1055
sudo lsof -nP -i :1055

macOS

sudo lsof -nP -i :1055

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1055 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1055
netstat -ano | findstr :1055

From another machine

nmap -p 1055 -sV <host>
sudo nmap -sU -p 1055 <host>
nc -zv <host> 1055

Block it in the firewall

sudo ufw deny 1055/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1055" -Direction Inbound -LocalPort 1055 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1055 used for?

Port 1055 is assigned by IANA to ansyslmd (ANSYS - License Manager).

Is port 1055 TCP or UDP?

Port 1055 is registered for TCP and UDP.

Is it safe to open port 1055?

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 1055 is open?

On Linux run "ss -ltnup 'sport = :1055'", on macOS "lsof -nP -i :1055", and on Windows "netstat -ano | findstr :1055" to see the local process. From another machine, "nmap -p 1055 <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

Latest vulnerability news

All news