Port 1513 (fujitsu-dtc)

IANA assigns port 1513 to fujitsu-dtc: Fujitsu Systems Business of America, Inc.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

fujitsu-dtc TCP Fujitsu Systems Business of America, Inc - -

fujitsu-dtc UDP Fujitsu Systems Business of America, Inc - -

Linux: is anything listening on TCP 1513?

sudo ss -tlnp 'sport = :1513'

Linux: UDP 1513

sudo ss -ulnp 'sport = :1513'

Linux / macOS: which process owns the port

sudo lsof -nP -i :1513

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':1513 '

Windows (Command Prompt)

netstat -ano | findstr :1513

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1513 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 1513

From Windows

Test-NetConnection HOST -Port 1513

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

nc -vzu -w 5 HOST 1513

ufw

sudo ufw deny 1513/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 1513 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 1513 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 1513' -Direction Inbound -Protocol TCP -LocalPort 1513 -Action Block

ufw

sudo ufw deny 1513/udp

iptables

sudo iptables -A INPUT -p udp --dport 1513 -j DROP

nftables

sudo nft add rule inet filter input udp dport 1513 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 1513' -Direction Inbound -Protocol UDP -LocalPort 1513 -Action Block

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