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Port 7744 (raqmon-pdu)

IANA assigns port 7744 to raqmon-pdu: RAQMON PDU.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
raqmon-pdu TCP RAQMON PDU - RFC 4712
raqmon-pdu UDP RAQMON PDU - RFC 4712

Check what is listening on port 7744

Linux: is anything listening on TCP 7744?
sudo ss -tlnp 'sport = :7744'
Linux: UDP 7744
sudo ss -ulnp 'sport = :7744'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7744
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7744 '
Windows (Command Prompt)
netstat -ano | findstr :7744
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7744 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7744
From Windows
Test-NetConnection HOST -Port 7744
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 7744

Block port 7744 in the firewall

ufw
sudo ufw deny 7744/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7744 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7744 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7744' -Direction Inbound -Protocol TCP -LocalPort 7744 -Action Block
ufw
sudo ufw deny 7744/udp
iptables
sudo iptables -A INPUT -p udp --dport 7744 -j DROP
nftables
sudo nft add rule inet filter input udp dport 7744 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 7744' -Direction Inbound -Protocol UDP -LocalPort 7744 -Action Block

Related ports

7742msss7743sstp-17747prgp7775inetfs

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