Port 1486 (nms-topo-serv, nms_topo_serv)

IANA assigns port 1486 to nms-topo-serv, nms_topo_serv: nms_topo_serv IANA assigned this well-formed service name as a replacement for "nms_topo_serv"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

nms-topo-serv TCP nms_topo_serv IANA assigned this well-formed service name as a replacement for "nms_topo_serv". Sylvia Siu -

nms_topo_serv TCP nms_topo_serv
This entry is an alias to "nms-topo-serv". This entry is now historic, not usable for use with many common service discovery mechanisms. Sylvia Siu -

nms-topo-serv UDP nms_topo_serv IANA assigned this well-formed service name as a replacement for "nms_topo_serv". Sylvia Siu -

nms_topo_serv UDP nms_topo_serv
This entry is an alias to "nms-topo-serv". This entry is now historic, not usable for use with many common service discovery mechanisms. Sylvia Siu -

Check what is listening on port 1486

Linux: is anything listening on TCP 1486?

sudo ss -tlnp 'sport = :1486'

Linux: UDP 1486

sudo ss -ulnp 'sport = :1486'

Linux / macOS: which process owns the port

sudo lsof -nP -i :1486

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':1486 '

Windows (Command Prompt)

netstat -ano | findstr :1486

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1486 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 1486

From Windows

Test-NetConnection HOST -Port 1486

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

nc -vzu -w 5 HOST 1486

Block port 1486 in the firewall

ufw

sudo ufw deny 1486/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 1486 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 1486 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 1486' -Direction Inbound -Protocol TCP -LocalPort 1486 -Action Block

ufw

sudo ufw deny 1486/udp