Port 5191
aol-1 · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | aol-1 |
Frequently asked questions
What is port 5191 used for?
Port 5191 is registered with the IANA for aol-1 (TCP/UDP). Description: AmericaOnline1.
Is port 5191 a well-known port?
No. Port 5191 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 5191 is open?
Locally on Linux with ss -tulpn | grep ':5191\b', on Windows with netstat -ano | findstr :5191. To test a remote host use Test-NetConnection <host> -Port 5191 in PowerShell or nc -zv <host> 5191 on Linux/macOS.
How do I open port 5191 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 5191/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5191/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5191" -Direction Inbound -Protocol TCP -LocalPort 5191 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | aol-1 | AmericaOnline1 |
| UDP | aol-1 | AmericaOnline1 |