HTTPfy

Port 4300 (corelccam)

IANA assigns port 4300 to corelccam: Corel CCam.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
corelccam TCP Corel CCam Jason Aiken -
corelccam UDP Corel CCam Jason Aiken -

Check what is listening on port 4300

Linux: is anything listening on TCP 4300?
sudo ss -tlnp 'sport = :4300'
Linux: UDP 4300
sudo ss -ulnp 'sport = :4300'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4300
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4300 '
Windows (Command Prompt)
netstat -ano | findstr :4300
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4300 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4300
From Windows
Test-NetConnection HOST -Port 4300
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4300

Block port 4300 in the firewall

ufw
sudo ufw deny 4300/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4300 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4300 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4300' -Direction Inbound -Protocol TCP -LocalPort 4300 -Action Block
ufw
sudo ufw deny 4300/udp
iptables
sudo iptables -A INPUT -p udp --dport 4300 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4300 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4300' -Direction Inbound -Protocol UDP -LocalPort 4300 -Action Block

Related ports

4197hctl4199eims-admin4301d-data4302d-data-control

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