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// Other services

Port 2011: raid

Port 2011 is assigned by IANA to raid-cc (raid), servserv ().

2011

How raid-cc works

Other services
client:2011raid-ccresponse client:2011raid-ccresponse

The client sends a request to port 2011 and the raid-cc 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 2011 dangerous?

We have no specific security note for port 2011. 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 2011

ServicePortTransportDescriptionReferenceUpdated
raid-cc 2011 TCP raid - -
servserv 2011 UDP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2011, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2011'      # process listening on 2011
sudo lsof -nP -i :2011

macOS

sudo lsof -nP -i :2011

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2011 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2011
netstat -ano | findstr :2011

From another machine

nmap -p 2011 -sV <host>
sudo nmap -sU -p 2011 <host>
nc -zv <host> 2011

Block it in the firewall

sudo ufw deny 2011/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2011" -Direction Inbound -LocalPort 2011 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2011 used for?

Port 2011 is assigned by IANA to raid-cc (raid), servserv ().

Is port 2011 TCP or UDP?

Port 2011 is registered for TCP and UDP.

Is it safe to open port 2011?

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 2011 is open?

On Linux run "ss -ltnup 'sport = :2011'", on macOS "lsof -nP -i :2011", and on Windows "netstat -ano | findstr :2011" to see the local process. From another machine, "nmap -p 2011 <host>" shows whether it is reachable.

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