Port 7742 (msss)

IANA assigns port 7742 to msss: Mugginsoft Script Server Service.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

msss TCP Mugginsoft Script Server Service Jonathan Mitchell -

Registry dates for this port: registered 2008-09-08.

Linux: is anything listening on TCP 7742?

sudo ss -tlnp 'sport = :7742'

Linux / macOS: which process owns the port

sudo lsof -nP -i :7742

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':7742 '

Windows (Command Prompt)

netstat -ano | findstr :7742

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7742 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 7742

From Windows

Test-NetConnection HOST -Port 7742

ufw

sudo ufw deny 7742/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 7742 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 7742 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 7742' -Direction Inbound -Protocol TCP -LocalPort 7742 -Action Block

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