HTTPfy

Port 1825 (direcpc-video)

IANA assigns port 1825 to direcpc-video: DirecPC Video.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
direcpc-video TCP DirecPC Video Chris Kerrigan -
direcpc-video UDP DirecPC Video Chris Kerrigan -

Check what is listening on port 1825

Linux: is anything listening on TCP 1825?
sudo ss -tlnp 'sport = :1825'
Linux: UDP 1825
sudo ss -ulnp 'sport = :1825'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1825
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1825 '
Windows (Command Prompt)
netstat -ano | findstr :1825
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1825 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1825
From Windows
Test-NetConnection HOST -Port 1825
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1825

Block port 1825 in the firewall

ufw
sudo ufw deny 1825/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1825 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1825 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1825' -Direction Inbound -Protocol TCP -LocalPort 1825 -Action Block
ufw
sudo ufw deny 1825/udp
iptables
sudo iptables -A INPUT -p udp --dport 1825 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1825 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1825' -Direction Inbound -Protocol UDP -LocalPort 1825 -Action Block

Related ports

1823unisys-lm1824metrics-pas1826ardt1827asi

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