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Port 6627 (nexgen)

IANA assigns port 6627 to nexgen: Allied Electronics NeXGen.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nexgen TCP Allied Electronics NeXGen Lou Seitchik -
nexgen UDP Allied Electronics NeXGen Lou Seitchik -

Registry dates for this port: registered 2005-08.

Check what is listening on port 6627

Linux: is anything listening on TCP 6627?
sudo ss -tlnp 'sport = :6627'
Linux: UDP 6627
sudo ss -ulnp 'sport = :6627'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6627
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6627 '
Windows (Command Prompt)
netstat -ano | findstr :6627
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6627 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6627
From Windows
Test-NetConnection HOST -Port 6627
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6627

Block port 6627 in the firewall

ufw
sudo ufw deny 6627/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6627 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6627 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6627' -Direction Inbound -Protocol TCP -LocalPort 6627 -Action Block
ufw
sudo ufw deny 6627/udp
iptables
sudo iptables -A INPUT -p udp --dport 6627 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6627 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6627' -Direction Inbound -Protocol UDP -LocalPort 6627 -Action Block

Related ports

6625datascaler-ctl6626wago-service6628afesc-mc6629nexgen-aux

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