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Port 1649 (kermit)

IANA assigns port 1649 to kermit.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
kermit TCP kermit Frank da Cruz -
kermit UDP kermit Frank da Cruz -

Check what is listening on port 1649

Linux: is anything listening on TCP 1649?
sudo ss -tlnp 'sport = :1649'
Linux: UDP 1649
sudo ss -ulnp 'sport = :1649'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1649
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1649 '
Windows (Command Prompt)
netstat -ano | findstr :1649
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1649 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1649
From Windows
Test-NetConnection HOST -Port 1649
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1649

Block port 1649 in the firewall

ufw
sudo ufw deny 1649/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1649 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1649 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1649' -Direction Inbound -Protocol TCP -LocalPort 1649 -Action Block
ufw
sudo ufw deny 1649/udp
iptables
sudo iptables -A INPUT -p udp --dport 1649 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1649 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1649' -Direction Inbound -Protocol UDP -LocalPort 1649 -Action Block

Related ports

1647rsap1648concurrent-lm1650nkd1651shiva-confsrvr, shiva_confsrvr

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