Port 5786
cisco-redu · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | cisco-redu |
| Registered | 2010-02-04 |
Frequently asked questions
What is port 5786 used for?
Port 5786 is registered with the IANA for cisco-redu (TCP/UDP). Description: Reserved; redundancy notification.
Is port 5786 a well-known port?
No. Port 5786 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 5786 is open?
Locally on Linux with ss -tulpn | grep ':5786\b', on Windows with netstat -ano | findstr :5786. To test a remote host use Test-NetConnection <host> -Port 5786 in PowerShell or nc -zv <host> 5786 on Linux/macOS.
How do I open port 5786 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 5786/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5786/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5786" -Direction Inbound -Protocol TCP -LocalPort 5786 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | – | Reserved |
| UDP | cisco-redu | redundancy notification |