Port 5445
smbdirect · SCTP/TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | SCTP/TCP/UDP |
| Service | smbdirect |
| Registered | 2012-03-15 |
Frequently asked questions
What is port 5445 used for?
Port 5445 is registered with the IANA for smbdirect (SCTP/TCP/UDP). Description: Server Message Block over Remote Direct Memory Access; Reserved.
Is port 5445 a well-known port?
No. Port 5445 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 5445 is open?
Locally on Linux with ss -tulpn | grep ':5445\b', on Windows with netstat -ano | findstr :5445. To test a remote host use Test-NetConnection <host> -Port 5445 in PowerShell or nc -zv <host> 5445 on Linux/macOS.
How do I open port 5445 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 5445/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5445/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5445" -Direction Inbound -Protocol TCP -LocalPort 5445 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | smbdirect | Server Message Block over Remote Direct Memory Access |
| UDP | – | Reserved |
| SCTP | smbdirect | Server Message Block over Remote Direct Memory Access |