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Port 3844 (rnm)

IANA assigns port 3844 to rnm: RNM.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
rnm TCP RNM sn w of renegade lab -
rnm UDP RNM sn w of renegade lab -

Registry dates for this port: registered 2003-11.

Check what is listening on port 3844

Linux: is anything listening on TCP 3844?
sudo ss -tlnp 'sport = :3844'
Linux: UDP 3844
sudo ss -ulnp 'sport = :3844'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3844
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3844 '
Windows (Command Prompt)
netstat -ano | findstr :3844
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3844 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3844
From Windows
Test-NetConnection HOST -Port 3844
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3844

Block port 3844 in the firewall

ufw
sudo ufw deny 3844/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3844 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3844 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3844' -Direction Inbound -Protocol TCP -LocalPort 3844 -Action Block
ufw
sudo ufw deny 3844/udp
iptables
sudo iptables -A INPUT -p udp --dport 3844 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3844 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3844' -Direction Inbound -Protocol UDP -LocalPort 3844 -Action Block

Related ports

3842nhci3843quest-agent3845v-one-spp3846an-pcp

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