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Port 8294 (blp4)

IANA assigns port 8294 to blp4: Bloomberg intelligent client.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
blp4 TCP Bloomberg intelligent client Albert Hou -
blp4 UDP Bloomberg intelligent client Albert Hou -

Registry dates for this port: registered 2006-05.

Check what is listening on port 8294

Linux: is anything listening on TCP 8294?
sudo ss -tlnp 'sport = :8294'
Linux: UDP 8294
sudo ss -ulnp 'sport = :8294'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8294
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8294 '
Windows (Command Prompt)
netstat -ano | findstr :8294
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8294 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8294
From Windows
Test-NetConnection HOST -Port 8294
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8294

Block port 8294 in the firewall

ufw
sudo ufw deny 8294/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8294 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8294 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8294' -Direction Inbound -Protocol TCP -LocalPort 8294 -Action Block
ufw
sudo ufw deny 8294/udp
iptables
sudo iptables -A INPUT -p udp --dport 8294 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8294 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8294' -Direction Inbound -Protocol UDP -LocalPort 8294 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.