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Port 1477 (ms-sna-server)

IANA assigns port 1477 to ms-sna-server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ms-sna-server TCP ms-sna-server - -
ms-sna-server UDP ms-sna-server - -

Check what is listening on port 1477

Linux: is anything listening on TCP 1477?
sudo ss -tlnp 'sport = :1477'
Linux: UDP 1477
sudo ss -ulnp 'sport = :1477'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1477
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1477 '
Windows (Command Prompt)
netstat -ano | findstr :1477
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1477 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1477
From Windows
Test-NetConnection HOST -Port 1477
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1477

Block port 1477 in the firewall

ufw
sudo ufw deny 1477/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1477 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1477 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1477' -Direction Inbound -Protocol TCP -LocalPort 1477 -Action Block
ufw
sudo ufw deny 1477/udp
iptables
sudo iptables -A INPUT -p udp --dport 1477 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1477 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1477' -Direction Inbound -Protocol UDP -LocalPort 1477 -Action Block

Related ports

1475taligent-lm1476clvm-cfg1478ms-sna-base1479dberegister

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