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Port 632 (bmpp)

IANA assigns port 632 to bmpp.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
bmpp TCP bmpp Troy Rollo -
bmpp UDP bmpp Troy Rollo -

Check what is listening on port 632

Linux: is anything listening on TCP 632?
sudo ss -tlnp 'sport = :632'
Linux: UDP 632
sudo ss -ulnp 'sport = :632'
Linux / macOS: which process owns the port
sudo lsof -nP -i :632
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':632 '
Windows (Command Prompt)
netstat -ano | findstr :632
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 632 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 632
From Windows
Test-NetConnection HOST -Port 632
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 632

Block port 632 in the firewall

ufw
sudo ufw deny 632/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 632 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 632 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 632' -Direction Inbound -Protocol TCP -LocalPort 632 -Action Block
ufw
sudo ufw deny 632/udp
iptables
sudo iptables -A INPUT -p udp --dport 632 -j DROP
nftables
sudo nft add rule inet filter input udp dport 632 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 632' -Direction Inbound -Protocol UDP -LocalPort 632 -Action Block

Related ports

630rda631IPP / CUPS633servstat634ginad

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