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Port 9279 (pegasus-ctl)

IANA assigns port 9279 to pegasus-ctl: Pegaus GPS System Control Interface.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
pegasus-ctl TCP Pegaus GPS System Control Interface Nestor A Diaz -
pegasus-ctl UDP Pegaus GPS System Control Interface Nestor A Diaz -

Registry dates for this port: registered 2009-05-12.

Check what is listening on port 9279

Linux: is anything listening on TCP 9279?
sudo ss -tlnp 'sport = :9279'
Linux: UDP 9279
sudo ss -ulnp 'sport = :9279'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9279
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9279 '
Windows (Command Prompt)
netstat -ano | findstr :9279
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9279 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9279
From Windows
Test-NetConnection HOST -Port 9279
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9279

Block port 9279 in the firewall

ufw
sudo ufw deny 9279/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9279 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9279 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9279' -Direction Inbound -Protocol TCP -LocalPort 9279 -Action Block
ufw
sudo ufw deny 9279/udp
iptables
sudo iptables -A INPUT -p udp --dport 9279 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9279 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9279' -Direction Inbound -Protocol UDP -LocalPort 9279 -Action Block

Related ports

9277traingpsdata9278pegasus9280pgps9281swtp-port1

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.