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Port 2388 (mynahautostart)

IANA assigns port 2388 to mynahautostart: MYNAH AutoStart.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
mynahautostart TCP MYNAH AutoStart Thomas J Klehr -
mynahautostart UDP MYNAH AutoStart Thomas J Klehr -

Check what is listening on port 2388

Linux: is anything listening on TCP 2388?
sudo ss -tlnp 'sport = :2388'
Linux: UDP 2388
sudo ss -ulnp 'sport = :2388'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2388
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2388 '
Windows (Command Prompt)
netstat -ano | findstr :2388
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2388 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2388
From Windows
Test-NetConnection HOST -Port 2388
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2388

Block port 2388 in the firewall

ufw
sudo ufw deny 2388/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2388 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2388 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2388' -Direction Inbound -Protocol TCP -LocalPort 2388 -Action Block
ufw
sudo ufw deny 2388/udp
iptables
sudo iptables -A INPUT -p udp --dport 2388 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2388 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2388' -Direction Inbound -Protocol UDP -LocalPort 2388 -Action Block

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