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Port 1671 (netview-aix-11)

IANA assigns port 1671 to netview-aix-11.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netview-aix-11 TCP netview-aix-11 - -
netview-aix-11 UDP netview-aix-11 - -

Check what is listening on port 1671

Linux: is anything listening on TCP 1671?
sudo ss -tlnp 'sport = :1671'
Linux: UDP 1671
sudo ss -ulnp 'sport = :1671'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1671
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1671 '
Windows (Command Prompt)
netstat -ano | findstr :1671
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1671 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1671
From Windows
Test-NetConnection HOST -Port 1671
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1671

Block port 1671 in the firewall

ufw
sudo ufw deny 1671/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1671 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1671 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1671' -Direction Inbound -Protocol TCP -LocalPort 1671 -Action Block
ufw
sudo ufw deny 1671/udp
iptables
sudo iptables -A INPUT -p udp --dport 1671 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1671 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1671' -Direction Inbound -Protocol UDP -LocalPort 1671 -Action Block

Related ports

1669netview-aix-91670netview-aix-101672netview-aix-121673proshare-mc-1

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