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// Other services

Port 5103: Actifio C2C

Port 5103 is assigned by IANA to actifio-c2c (Actifio C2C).

5103

How actifio-c2c works

Other services
client:5103actifio-c2cresponse client:5103actifio-c2cresponse

The client sends a request to port 5103 and the actifio-c2c service answers.

Transport
TCP
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 5103 dangerous?

We have no specific security note for port 5103. 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 5103

ServicePortTransportDescriptionReferenceUpdated
actifio-c2c 5103 TCP Actifio C2C - 2010-06-18
-5103-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5103, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5103'      # process listening on 5103
sudo lsof -nP -i :5103

macOS

sudo lsof -nP -i :5103

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5103 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5103
netstat -ano | findstr :5103

From another machine

nmap -p 5103 -sV <host>
nc -zv <host> 5103

Block it in the firewall

sudo ufw deny 5103/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5103" -Direction Inbound -LocalPort 5103 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5103 used for?

Port 5103 is assigned by IANA to actifio-c2c (Actifio C2C).

Is port 5103 TCP or UDP?

Port 5103 is registered for TCP.

Is it safe to open port 5103?

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 5103 is open?

On Linux run "ss -ltnup 'sport = :5103'", on macOS "lsof -nP -i :5103", and on Windows "netstat -ano | findstr :5103" to see the local process. From another machine, "nmap -p 5103 <host>" shows whether it is reachable.

05 Related
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