Port 34378 (p-net-local)

IANA assigns port 34378 to p-net-local: P-Net on IP local.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

p-net-local TCP P-Net on IP local Kurt Nissen -

p-net-local UDP P-Net on IP local Kurt Nissen -

Registry dates for this port: registered 2004-02.

Linux: is anything listening on TCP 34378?

sudo ss -tlnp 'sport = :34378'

Linux: UDP 34378

sudo ss -ulnp 'sport = :34378'

Linux / macOS: which process owns the port

sudo lsof -nP -i :34378

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':34378 '

Windows (Command Prompt)

netstat -ano | findstr :34378

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 34378 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 34378

From Windows

Test-NetConnection HOST -Port 34378

UDP probe (no reply does not prove it is closed)

nc -vzu -w 5 HOST 34378

ufw

sudo ufw deny 34378/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 34378 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 34378 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 34378' -Direction Inbound -Protocol TCP -LocalPort 34378 -Action Block

ufw

sudo ufw deny 34378/udp

iptables

sudo iptables -A INPUT -p udp --dport 34378 -j DROP

nftables

sudo nft add rule inet filter input udp dport 34378 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 34378' -Direction Inbound -Protocol UDP -LocalPort 34378 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.