Port 1461 (ibm-wrless-lan, ibm_wrless_lan)

IANA assigns port 1461 to ibm-wrless-lan, ibm_wrless_lan: IBM Wireless LAN IANA assigned this well-formed service name as a replacement for "ibm_wrless_lan"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

ibm-wrless-lan TCP IBM Wireless LAN IANA assigned this well-formed service name as a replacement for "ibm_wrless_lan". flanne -

ibm_wrless_lan TCP IBM Wireless LAN
This entry is an alias to "ibm-wrless-lan". This entry is now historic, not usable for use with many common service discovery mechanisms. flanne -

ibm-wrless-lan UDP IBM Wireless LAN IANA assigned this well-formed service name as a replacement for "ibm_wrless_lan". flanne -

ibm_wrless_lan UDP IBM Wireless LAN
This entry is an alias to "ibm-wrless-lan". This entry is now historic, not usable for use with many common service discovery mechanisms. flanne -

Check what is listening on port 1461

Linux: is anything listening on TCP 1461?

sudo ss -tlnp 'sport = :1461'

Linux: UDP 1461

sudo ss -ulnp 'sport = :1461'

Linux / macOS: which process owns the port

sudo lsof -nP -i :1461

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':1461 '

Windows (Command Prompt)

netstat -ano | findstr :1461

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1461 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine

nc -vz -w 5 HOST 1461

From Windows

Test-NetConnection HOST -Port 1461

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

nc -vzu -w 5 HOST 1461

Block port 1461 in the firewall

ufw

sudo ufw deny 1461/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 1461 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 1461 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 1461' -Direction Inbound -Protocol TCP -LocalPort 1461 -Action Block

ufw

sudo ufw deny 1461/udp