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Port 2845 (bpcp-trap)

IANA assigns port 2845 to bpcp-trap: BPCP TRAP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bpcp-trap TCP BPCP TRAP Steve Van Duser -
bpcp-trap UDP BPCP TRAP Steve Van Duser -

Check what is listening on port 2845

Linux: is anything listening on TCP 2845?
sudo ss -tlnp 'sport = :2845'
Linux: UDP 2845
sudo ss -ulnp 'sport = :2845'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2845
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2845 '
Windows (Command Prompt)
netstat -ano | findstr :2845
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2845 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2845
From Windows
Test-NetConnection HOST -Port 2845
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2845

Block port 2845 in the firewall

ufw
sudo ufw deny 2845/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2845 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2845 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2845' -Direction Inbound -Protocol TCP -LocalPort 2845 -Action Block
ufw
sudo ufw deny 2845/udp
iptables
sudo iptables -A INPUT -p udp --dport 2845 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2845 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2845' -Direction Inbound -Protocol UDP -LocalPort 2845 -Action Block

Related ports

2843pdnet2844bpcp-poll2846aimpp-hello2847aimpp-port-req

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