Port 6456
skip-cert-send · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | skip-cert-send |
Frequently asked questions
What is port 6456 used for?
Port 6456 is registered with the IANA for skip-cert-send (TCP/UDP). Description: SKIP Certificate Send.
Is port 6456 a well-known port?
No. Port 6456 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 6456 is open?
Locally on Linux with ss -tulpn | grep ':6456\b', on Windows with netstat -ano | findstr :6456. To test a remote host use Test-NetConnection <host> -Port 6456 in PowerShell or nc -zv <host> 6456 on Linux/macOS.
How do I open port 6456 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 6456/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6456/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6456" -Direction Inbound -Protocol TCP -LocalPort 6456 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | skip-cert-send | SKIP Certificate Send |
| UDP | skip-cert-send | SKIP Certificate Send |