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Port 3826 (warmux)

IANA assigns port 3826 to warmux: WarMUX game server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
warmux TCP WarMUX game server Christophe Gisquet -
warmux UDP WarMUX game server Christophe Gisquet -

Registry dates for this port: last modified 2011-05-26.

Check what is listening on port 3826

Linux: is anything listening on TCP 3826?
sudo ss -tlnp 'sport = :3826'
Linux: UDP 3826
sudo ss -ulnp 'sport = :3826'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3826
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3826 '
Windows (Command Prompt)
netstat -ano | findstr :3826
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3826 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3826
From Windows
Test-NetConnection HOST -Port 3826
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3826

Block port 3826 in the firewall

ufw
sudo ufw deny 3826/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3826 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3826 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3826' -Direction Inbound -Protocol TCP -LocalPort 3826 -Action Block
ufw
sudo ufw deny 3826/udp
iptables
sudo iptables -A INPUT -p udp --dport 3826 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3826 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3826' -Direction Inbound -Protocol UDP -LocalPort 3826 -Action Block

Related ports

3824acp-policy3825ffserver3827netmpi3828neteh

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