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Port 1041 (danf-ak2)

IANA assigns port 1041 to danf-ak2: AK2 Product.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
danf-ak2 TCP AK2 Product Karl Palsson -
danf-ak2 UDP AK2 Product Karl Palsson -

Registry dates for this port: registered 2004-11.

Check what is listening on port 1041

Linux: is anything listening on TCP 1041?
sudo ss -tlnp 'sport = :1041'
Linux: UDP 1041
sudo ss -ulnp 'sport = :1041'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1041
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1041 '
Windows (Command Prompt)
netstat -ano | findstr :1041
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1041 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1041
From Windows
Test-NetConnection HOST -Port 1041
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1041

Block port 1041 in the firewall

ufw
sudo ufw deny 1041/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1041 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1041 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1041' -Direction Inbound -Protocol TCP -LocalPort 1041 -Action Block
ufw
sudo ufw deny 1041/udp
iptables
sudo iptables -A INPUT -p udp --dport 1041 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1041 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1041' -Direction Inbound -Protocol UDP -LocalPort 1041 -Action Block

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