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Port 9374 (fjdmimgr)

IANA assigns port 9374 to fjdmimgr.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
fjdmimgr TCP fjdmimgr Yutaka Ono -
fjdmimgr UDP fjdmimgr Yutaka Ono -

Check what is listening on port 9374

Linux: is anything listening on TCP 9374?
sudo ss -tlnp 'sport = :9374'
Linux: UDP 9374
sudo ss -ulnp 'sport = :9374'
Linux / macOS: which process owns the port
sudo lsof -nP -i :9374
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':9374 '
Windows (Command Prompt)
netstat -ano | findstr :9374
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 9374 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 9374
From Windows
Test-NetConnection HOST -Port 9374
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 9374

Block port 9374 in the firewall

ufw
sudo ufw deny 9374/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 9374 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 9374 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 9374' -Direction Inbound -Protocol TCP -LocalPort 9374 -Action Block
ufw
sudo ufw deny 9374/udp
iptables
sudo iptables -A INPUT -p udp --dport 9374 -j DROP
nftables
sudo nft add rule inet filter input udp dport 9374 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 9374' -Direction Inbound -Protocol UDP -LocalPort 9374 -Action Block

Related ports

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