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Port 467 (mylex-mapd)

IANA assigns port 467 to mylex-mapd.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mylex-mapd TCP mylex-mapd Gary Lewis -
mylex-mapd UDP mylex-mapd Gary Lewis -

Check what is listening on port 467

Linux: is anything listening on TCP 467?
sudo ss -tlnp 'sport = :467'
Linux: UDP 467
sudo ss -ulnp 'sport = :467'
Linux / macOS: which process owns the port
sudo lsof -nP -i :467
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':467 '
Windows (Command Prompt)
netstat -ano | findstr :467
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 467 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 467
From Windows
Test-NetConnection HOST -Port 467
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 467

Block port 467 in the firewall

ufw
sudo ufw deny 467/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 467 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 467 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 467' -Direction Inbound -Protocol TCP -LocalPort 467 -Action Block
ufw
sudo ufw deny 467/udp
iptables
sudo iptables -A INPUT -p udp --dport 467 -j DROP
nftables
sudo nft add rule inet filter input udp dport 467 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 467' -Direction Inbound -Protocol UDP -LocalPort 467 -Action Block

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