CyberHunter
Local dataset, no network
// Other services

Port 5455: APC 5455

Port 5455 is assigned by IANA to apc-5455 (APC 5455).

5455

How apc-5455 works

Other services
client:5455apc-5455response client:5455apc-5455response

The client sends a request to port 5455 and the apc-5455 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 5455 dangerous?

We have no specific security note for port 5455. 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 5455

ServicePortTransportDescriptionReferenceUpdated
apc-5455 5455 TCP, UDP APC 5455 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 5455, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5455'      # process listening on 5455
sudo lsof -nP -i :5455

macOS

sudo lsof -nP -i :5455

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5455 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5455
netstat -ano | findstr :5455

From another machine

nmap -p 5455 -sV <host>
sudo nmap -sU -p 5455 <host>
nc -zv <host> 5455

Block it in the firewall

sudo ufw deny 5455/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5455" -Direction Inbound -LocalPort 5455 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5455 used for?

Port 5455 is assigned by IANA to apc-5455 (APC 5455).

Is port 5455 TCP or UDP?

Port 5455 is registered for TCP and UDP.

Is it safe to open port 5455?

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 5455 is open?

On Linux run "ss -ltnup 'sport = :5455'", on macOS "lsof -nP -i :5455", and on Windows "netstat -ano | findstr :5455" to see the local process. From another machine, "nmap -p 5455 <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