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Port 715 (iris-lwz)

IANA assigns port 715 to iris-lwz: IRIS-LWZ.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
iris-lwz TCP IRIS-LWZ - RFC 4993
iris-lwz UDP IRIS-LWZ - RFC 4993

Check what is listening on port 715

Linux: is anything listening on TCP 715?
sudo ss -tlnp 'sport = :715'
Linux: UDP 715
sudo ss -ulnp 'sport = :715'
Linux / macOS: which process owns the port
sudo lsof -nP -i :715
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':715 '
Windows (Command Prompt)
netstat -ano | findstr :715
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 715 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 715
From Windows
Test-NetConnection HOST -Port 715
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 715

Block port 715 in the firewall

ufw
sudo ufw deny 715/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 715 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 715 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 715' -Direction Inbound -Protocol TCP -LocalPort 715 -Action Block
ufw
sudo ufw deny 715/udp
iptables
sudo iptables -A INPUT -p udp --dport 715 -j DROP
nftables
sudo nft add rule inet filter input udp dport 715 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 715' -Direction Inbound -Protocol UDP -LocalPort 715 -Action Block

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