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Port 7747 (prgp)

IANA assigns port 7747 to prgp: Put/Run/Get Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
prgp TCP Put/Run/Get Protocol Jayasooriah -
prgp UDP Put/Run/Get Protocol Jayasooriah -

Registry dates for this port: registered 2008-02-22.

Check what is listening on port 7747

Linux: is anything listening on TCP 7747?
sudo ss -tlnp 'sport = :7747'
Linux: UDP 7747
sudo ss -ulnp 'sport = :7747'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7747
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7747 '
Windows (Command Prompt)
netstat -ano | findstr :7747
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7747 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7747
From Windows
Test-NetConnection HOST -Port 7747
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 7747

Block port 7747 in the firewall

ufw
sudo ufw deny 7747/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7747 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7747 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7747' -Direction Inbound -Protocol TCP -LocalPort 7747 -Action Block
ufw
sudo ufw deny 7747/udp
iptables
sudo iptables -A INPUT -p udp --dport 7747 -j DROP
nftables
sudo nft add rule inet filter input udp dport 7747 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 7747' -Direction Inbound -Protocol UDP -LocalPort 7747 -Action Block

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