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Port 3116 (mctet-gateway)

IANA assigns port 3116 to mctet-gateway: MCTET Gateway.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mctet-gateway TCP MCTET Gateway - -
mctet-gateway UDP MCTET Gateway - -

Check what is listening on port 3116

Linux: is anything listening on TCP 3116?
sudo ss -tlnp 'sport = :3116'
Linux: UDP 3116
sudo ss -ulnp 'sport = :3116'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3116
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3116 '
Windows (Command Prompt)
netstat -ano | findstr :3116
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3116 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3116
From Windows
Test-NetConnection HOST -Port 3116
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3116

Block port 3116 in the firewall

ufw
sudo ufw deny 3116/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3116 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3116 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3116' -Direction Inbound -Protocol TCP -LocalPort 3116 -Action Block
ufw
sudo ufw deny 3116/udp
iptables
sudo iptables -A INPUT -p udp --dport 3116 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3116 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3116' -Direction Inbound -Protocol UDP -LocalPort 3116 -Action Block

Related ports

3114ccmad3115mctet-master3117mctet-jserv3118pkagent

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