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Port 2427 (mgcp-gateway)

IANA assigns port 2427 to mgcp-gateway: Media Gateway Control Protocol Gateway.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mgcp-gateway TCP Media Gateway Control Protocol Gateway Christian Huitema -
mgcp-gateway UDP Media Gateway Control Protocol Gateway Christian Huitema -

Check what is listening on port 2427

Linux: is anything listening on TCP 2427?
sudo ss -tlnp 'sport = :2427'
Linux: UDP 2427
sudo ss -ulnp 'sport = :2427'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2427
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2427 '
Windows (Command Prompt)
netstat -ano | findstr :2427
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2427 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2427
From Windows
Test-NetConnection HOST -Port 2427
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2427

Block port 2427 in the firewall

ufw
sudo ufw deny 2427/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2427 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2427 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2427' -Direction Inbound -Protocol TCP -LocalPort 2427 -Action Block
ufw
sudo ufw deny 2427/udp
iptables
sudo iptables -A INPUT -p udp --dport 2427 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2427 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2427' -Direction Inbound -Protocol UDP -LocalPort 2427 -Action Block

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