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Port 1667 (netview-aix-7)

IANA assigns port 1667 to netview-aix-7.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netview-aix-7 TCP netview-aix-7 - -
netview-aix-7 UDP netview-aix-7 - -

Check what is listening on port 1667

Linux: is anything listening on TCP 1667?
sudo ss -tlnp 'sport = :1667'
Linux: UDP 1667
sudo ss -ulnp 'sport = :1667'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1667
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1667 '
Windows (Command Prompt)
netstat -ano | findstr :1667
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1667 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1667
From Windows
Test-NetConnection HOST -Port 1667
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1667

Block port 1667 in the firewall

ufw
sudo ufw deny 1667/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1667 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1667 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1667' -Direction Inbound -Protocol TCP -LocalPort 1667 -Action Block
ufw
sudo ufw deny 1667/udp
iptables
sudo iptables -A INPUT -p udp --dport 1667 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1667 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1667' -Direction Inbound -Protocol UDP -LocalPort 1667 -Action Block

Related ports

1665netview-aix-51666netview-aix-61668netview-aix-81669netview-aix-9

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