Port 2981 (mylxamport)

IANA assigns port 2981 to mylxamport: MYLXAMPORT.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

mylxamport TCP MYLXAMPORT Wei Gao -

mylxamport UDP MYLXAMPORT Wei Gao -

Linux: is anything listening on TCP 2981?

sudo ss -tlnp 'sport = :2981'

Linux: UDP 2981

sudo ss -ulnp 'sport = :2981'

Linux / macOS: which process owns the port

sudo lsof -nP -i :2981

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':2981 '

Windows (Command Prompt)

netstat -ano | findstr :2981

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2981 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 2981

From Windows

Test-NetConnection HOST -Port 2981

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

nc -vzu -w 5 HOST 2981

ufw

sudo ufw deny 2981/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 2981 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 2981 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 2981' -Direction Inbound -Protocol TCP -LocalPort 2981 -Action Block

ufw

sudo ufw deny 2981/udp

iptables

sudo iptables -A INPUT -p udp --dport 2981 -j DROP

nftables

sudo nft add rule inet filter input udp dport 2981 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 2981' -Direction Inbound -Protocol UDP -LocalPort 2981 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.