Port 1651 (shiva-confsrvr, shiva_confsrvr)

IANA assigns port 1651 to shiva-confsrvr, shiva_confsrvr: shiva_confsrvr IANA assigned this well-formed service name as a replacement for "shiva_confsrvr"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

shiva-confsrvr TCP shiva_confsrvr IANA assigned this well-formed service name as a replacement for "shiva_confsrvr". Mike Horowitz -

shiva_confsrvr TCP shiva_confsrvr
This entry is an alias to "shiva-confsrvr". This entry is now historic, not usable for use with many common service discovery mechanisms. Mike Horowitz -

shiva-confsrvr UDP shiva_confsrvr IANA assigned this well-formed service name as a replacement for "shiva_confsrvr". Mike Horowitz -

shiva_confsrvr UDP shiva_confsrvr
This entry is an alias to "shiva-confsrvr". This entry is now historic, not usable for use with many common service discovery mechanisms. Mike Horowitz -

Check what is listening on port 1651

Linux: is anything listening on TCP 1651?

sudo ss -tlnp 'sport = :1651'

Linux: UDP 1651

sudo ss -ulnp 'sport = :1651'

Linux / macOS: which process owns the port

sudo lsof -nP -i :1651

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':1651 '

Windows (Command Prompt)

netstat -ano | findstr :1651

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1651 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 1651

From Windows

Test-NetConnection HOST -Port 1651

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 1651

Block port 1651 in the firewall

ufw

sudo ufw deny 1651/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 1651 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 1651 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 1651' -Direction Inbound -Protocol TCP -LocalPort 1651 -Action Block

ufw

sudo ufw deny 1651/udp