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Port 3385 (qnxnetman)

IANA assigns port 3385 to qnxnetman.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
qnxnetman TCP qnxnetman Michael Hunter -
qnxnetman UDP qnxnetman Michael Hunter -

Check what is listening on port 3385

Linux: is anything listening on TCP 3385?
sudo ss -tlnp 'sport = :3385'
Linux: UDP 3385
sudo ss -ulnp 'sport = :3385'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3385
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3385 '
Windows (Command Prompt)
netstat -ano | findstr :3385
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3385 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3385
From Windows
Test-NetConnection HOST -Port 3385
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3385

Block port 3385 in the firewall

ufw
sudo ufw deny 3385/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3385 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3385 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3385' -Direction Inbound -Protocol TCP -LocalPort 3385 -Action Block
ufw
sudo ufw deny 3385/udp
iptables
sudo iptables -A INPUT -p udp --dport 3385 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3385 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3385' -Direction Inbound -Protocol UDP -LocalPort 3385 -Action Block

Related ports

3383esp-lm3384hp-clic3386gprs-data, gprs-sig3387backroomnet

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