IANA assigns port 2865 to pit-vpn.
sudo ss -tlnp 'sport = :2865'sudo ss -ulnp 'sport = :2865'sudo lsof -nP -i :2865sudo netstat -tlnp | grep ':2865 'netstat -ano | findstr :2865Get-NetTCPConnection -LocalPort 2865 -State Listen | Select LocalAddress,OwningProcessnc -vz -w 5 HOST 2865Test-NetConnection HOST -Port 2865nc -vzu -w 5 HOST 2865sudo ufw deny 2865/tcpsudo iptables -A INPUT -p tcp --dport 2865 -j DROPsudo nft add rule inet filter input tcp dport 2865 dropNew-NetFirewallRule -DisplayName 'Block TCP 2865' -Direction Inbound -Protocol TCP -LocalPort 2865 -Action Blocksudo ufw deny 2865/udpsudo iptables -A INPUT -p udp --dport 2865 -j DROPsudo nft add rule inet filter input udp dport 2865 dropNew-NetFirewallRule -DisplayName 'Block UDP 2865' -Direction Inbound -Protocol UDP -LocalPort 2865 -Action BlockAll port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.