Port 2855
msrp · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | msrp |
| Reference | RFC 4976 |
| Modified | 2014-04-09 |
Frequently asked questions
What is port 2855 used for?
Port 2855 is registered with the IANA for msrp (TCP/UDP). Description: MSRP over TCP; Reserved.
Is port 2855 a well-known port?
No. Port 2855 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 2855 is open?
Locally on Linux with ss -tulpn | grep ':2855\b', on Windows with netstat -ano | findstr :2855. To test a remote host use Test-NetConnection <host> -Port 2855 in PowerShell or nc -zv <host> 2855 on Linux/macOS.
How do I open port 2855 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 2855/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=2855/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 2855" -Direction Inbound -Protocol TCP -LocalPort 2855 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | msrp | MSRP over TCP |
| UDP | – | Reserved |