Port 3864
asap-sctp-tls and asap-tcp-tls · SCTP/TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | SCTP/TCP/UDP |
| Service | asap-sctp-tls and asap-tcp-tls |
| Reference | RFC 5352 |
Frequently asked questions
What is port 3864 used for?
Port 3864 is registered with the IANA for asap-sctp-tls and asap-tcp-tls (SCTP/TCP/UDP). Description: asap/tls tcp port; Reserved; asap-sctp/tls.
Is port 3864 a well-known port?
No. Port 3864 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3864 is open?
Locally on Linux with ss -tulpn | grep ':3864\b', on Windows with netstat -ano | findstr :3864. To test a remote host use Test-NetConnection <host> -Port 3864 in PowerShell or nc -zv <host> 3864 on Linux/macOS.
How do I open port 3864 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3864/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3864/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3864" -Direction Inbound -Protocol TCP -LocalPort 3864 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | asap-tcp-tls | asap/tls tcp port |
| UDP | – | Reserved |
| SCTP | asap-sctp-tls | asap-sctp/tls |