- 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.
Port 30100: Remote Window Protocol
Port 30100 is assigned by IANA to rwp (Remote Window Protocol).
30100
How rwp works
Other servicesThe client sends a request to port 30100 and the rwp service answers.
- Transport
- TCP · SCTP
- 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
Is port 30100 dangerous?
We have no specific security note for port 30100. Its risk depends on the program actually listening on it. General advice for other services services:
IANA registry entries for port 30100
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| rwp | 30100 | TCP, SCTP | Remote Window Protocol | - | 2015-05-20 |
| - | 30100 | - | Reserved | - | - |
// source: IANA service name and port number registry
Which program uses port 30100, and is it reachable?
Linux
sudo ss -ltnup 'sport = :30100' # process listening on 30100
sudo lsof -nP -i :30100macOS
sudo lsof -nP -i :30100
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 30100 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 30100 netstat -ano | findstr :30100
From another machine
nmap -p 30100 -sV <host> nc -zv <host> 30100
Block it in the firewall
sudo ufw deny 30100/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 30100" -Direction Inbound -LocalPort 30100 -Protocol TCP -Action Block # Windows
What is port 30100 used for?
Port 30100 is assigned by IANA to rwp (Remote Window Protocol).
Is port 30100 TCP or UDP?
Port 30100 is registered for TCP and SCTP.
Is it safe to open port 30100?
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 30100 is open?
On Linux run "ss -ltnup 'sport = :30100'", on macOS "lsof -nP -i :30100", and on Windows "netstat -ano | findstr :30100" to see the local process. From another machine, "nmap -p 30100 <host>" shows whether it is reachable.
Other other services ports
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