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Port 264 (bgmp)

IANA assigns port 264 to bgmp: BGMP.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bgmp TCP BGMP Dave Thaler -
bgmp UDP BGMP Dave Thaler -

Check what is listening on port 264

Linux: is anything listening on TCP 264?
sudo ss -tlnp 'sport = :264'
Linux: UDP 264
sudo ss -ulnp 'sport = :264'
Linux / macOS: which process owns the port
sudo lsof -nP -i :264
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':264 '
Windows (Command Prompt)
netstat -ano | findstr :264
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 264 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 264
From Windows
Test-NetConnection HOST -Port 264
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 264

Block port 264 in the firewall

ufw
sudo ufw deny 264/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 264 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 264 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 264' -Direction Inbound -Protocol TCP -LocalPort 264 -Action Block
ufw
sudo ufw deny 264/udp
iptables
sudo iptables -A INPUT -p udp --dport 264 -j DROP
nftables
sudo nft add rule inet filter input udp dport 264 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 264' -Direction Inbound -Protocol UDP -LocalPort 264 -Action Block

Related ports

262arcisdms263hdap265x-bone-ctl266sst

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