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Port 8954 (cumulus-admin)

IANA assigns port 8954 to cumulus-admin: Cumulus Admin Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cumulus-admin TCP Cumulus Admin Port Thomas Schleu -
cumulus-admin UDP Cumulus Admin Port Thomas Schleu -

Check what is listening on port 8954

Linux: is anything listening on TCP 8954?
sudo ss -tlnp 'sport = :8954'
Linux: UDP 8954
sudo ss -ulnp 'sport = :8954'
Linux / macOS: which process owns the port
sudo lsof -nP -i :8954
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':8954 '
Windows (Command Prompt)
netstat -ano | findstr :8954
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 8954 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 8954
From Windows
Test-NetConnection HOST -Port 8954
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 8954

Block port 8954 in the firewall

ufw
sudo ufw deny 8954/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 8954 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 8954 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 8954' -Direction Inbound -Protocol TCP -LocalPort 8954 -Action Block
ufw
sudo ufw deny 8954/udp
iptables
sudo iptables -A INPUT -p udp --dport 8954 -j DROP
nftables
sudo nft add rule inet filter input udp dport 8954 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 8954' -Direction Inbound -Protocol UDP -LocalPort 8954 -Action Block

Related ports

8937twds8953ub-dns-control8980nod-provider8981nod-client

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