HTTPfy

Port 24680 (tcc-http)

IANA assigns port 24680 to tcc-http: TCC User HTTP Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
tcc-http TCP TCC User HTTP Service Brian Kennedy -
tcc-http UDP TCC User HTTP Service Brian Kennedy -

Registry dates for this port: registered 2006-08.

Check what is listening on port 24680

Linux: is anything listening on TCP 24680?
sudo ss -tlnp 'sport = :24680'
Linux: UDP 24680
sudo ss -ulnp 'sport = :24680'
Linux / macOS: which process owns the port
sudo lsof -nP -i :24680
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':24680 '
Windows (Command Prompt)
netstat -ano | findstr :24680
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 24680 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 24680
From Windows
Test-NetConnection HOST -Port 24680
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 24680

Block port 24680 in the firewall

ufw
sudo ufw deny 24680/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 24680 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 24680 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 24680' -Direction Inbound -Protocol TCP -LocalPort 24680 -Action Block
ufw
sudo ufw deny 24680/udp
iptables
sudo iptables -A INPUT -p udp --dport 24680 -j DROP
nftables
sudo nft add rule inet filter input udp dport 24680 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 24680' -Direction Inbound -Protocol UDP -LocalPort 24680 -Action Block

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