Port 5402 (mftp)

IANA assigns port 5402 to mftp: OmniCast MFTP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference

mftp TCP OmniCast MFTP Steve Bannister -

mftp UDP OmniCast MFTP Steve Bannister -

Linux: is anything listening on TCP 5402?

sudo ss -tlnp 'sport = :5402'

Linux: UDP 5402

sudo ss -ulnp 'sport = :5402'

Linux / macOS: which process owns the port

sudo lsof -nP -i :5402

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':5402 '

Windows (Command Prompt)

netstat -ano | findstr :5402

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5402 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 5402

From Windows

Test-NetConnection HOST -Port 5402

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

nc -vzu -w 5 HOST 5402

ufw

sudo ufw deny 5402/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 5402 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 5402 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 5402' -Direction Inbound -Protocol TCP -LocalPort 5402 -Action Block

ufw

sudo ufw deny 5402/udp

iptables

sudo iptables -A INPUT -p udp --dport 5402 -j DROP

nftables

sudo nft add rule inet filter input udp dport 5402 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block UDP 5402' -Direction Inbound -Protocol UDP -LocalPort 5402 -Action Block

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