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// Other services

Port 1118: SACRED

Port 1118 is assigned by IANA to sacred (SACRED).

1118

How sacred works

Other services
client:1118sacredresponse client:1118sacredresponse

The client sends a request to port 1118 and the sacred 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 1118 dangerous?

We have no specific security note for port 1118. 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 1118

ServicePortTransportDescriptionReferenceUpdated
sacred 1118 TCP, UDP SACRED RFC 3767 -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1118, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1118'      # process listening on 1118
sudo lsof -nP -i :1118

macOS

sudo lsof -nP -i :1118

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1118 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1118
netstat -ano | findstr :1118

From another machine

nmap -p 1118 -sV <host>
sudo nmap -sU -p 1118 <host>
nc -zv <host> 1118

Block it in the firewall

sudo ufw deny 1118/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1118" -Direction Inbound -LocalPort 1118 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1118 used for?

Port 1118 is assigned by IANA to sacred (SACRED).

Is port 1118 TCP or UDP?

Port 1118 is registered for TCP and UDP.

Is it safe to open port 1118?

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 1118 is open?

On Linux run "ss -ltnup 'sport = :1118'", on macOS "lsof -nP -i :1118", and on Windows "netstat -ano | findstr :1118" to see the local process. From another machine, "nmap -p 1118 <host>" shows whether it is reachable.

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