HTTPfy

Port 4151 (menandmice-noh, menandmice_noh)

IANA assigns port 4151 to menandmice-noh, menandmice_noh: Men & Mice Remote Control IANA assigned this well-formed service name as a replacement for "menandmice_noh"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
menandmice-noh TCP Men & Mice Remote Control IANA assigned this well-formed service name as a replacement for "menandmice_noh". Eggert Thorlacius -
menandmice_noh TCP Men & Mice Remote Control
This entry is an alias to "menandmice-noh". This entry is now historic, not usable for use with many common service discovery mechanisms.
Eggert Thorlacius -
menandmice-noh UDP Men & Mice Remote Control IANA assigned this well-formed service name as a replacement for "menandmice_noh". Eggert Thorlacius -
menandmice_noh UDP Men & Mice Remote Control
This entry is an alias to "menandmice-noh". This entry is now historic, not usable for use with many common service discovery mechanisms.
Eggert Thorlacius -

Registry dates for this port: registered 2007-08-30.

Check what is listening on port 4151

Linux: is anything listening on TCP 4151?
sudo ss -tlnp 'sport = :4151'
Linux: UDP 4151
sudo ss -ulnp 'sport = :4151'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4151
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4151 '
Windows (Command Prompt)
netstat -ano | findstr :4151
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4151 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4151
From Windows
Test-NetConnection HOST -Port 4151
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4151

Block port 4151 in the firewall

ufw
sudo ufw deny 4151/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4151 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4151 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4151' -Direction Inbound -Protocol TCP -LocalPort 4151 -Action Block
ufw
sudo ufw deny 4151/udp
iptables
sudo iptables -A INPUT -p udp --dport 4151 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4151 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4151' -Direction Inbound -Protocol UDP -LocalPort 4151 -Action Block

Related ports

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.