HTTPfy

Port 3168 (poweronnud)

IANA assigns port 3168 to poweronnud: Now Up-to-Date Public Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
poweronnud TCP Now Up-to-Date Public Server John Wallace -
poweronnud UDP Now Up-to-Date Public Server John Wallace -

Check what is listening on port 3168

Linux: is anything listening on TCP 3168?
sudo ss -tlnp 'sport = :3168'
Linux: UDP 3168
sudo ss -ulnp 'sport = :3168'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3168
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3168 '
Windows (Command Prompt)
netstat -ano | findstr :3168
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3168 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3168
From Windows
Test-NetConnection HOST -Port 3168
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3168

Block port 3168 in the firewall

ufw
sudo ufw deny 3168/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3168 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3168 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3168' -Direction Inbound -Protocol TCP -LocalPort 3168 -Action Block
ufw
sudo ufw deny 3168/udp
iptables
sudo iptables -A INPUT -p udp --dport 3168 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3168 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3168' -Direction Inbound -Protocol UDP -LocalPort 3168 -Action Block

Related ports

3166sossecollector3167nowcontact3169serverview-as3170serverview-asn

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