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Port 5434 (sgi-arrayd)

IANA assigns port 5434 to sgi-arrayd: SGI Array Services Daemon.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sgi-arrayd TCP SGI Array Services Daemon Karl Feind -
sgi-arrayd UDP SGI Array Services Daemon Karl Feind -

Registry dates for this port: registered 2005-10.

Check what is listening on port 5434

Linux: is anything listening on TCP 5434?
sudo ss -tlnp 'sport = :5434'
Linux: UDP 5434
sudo ss -ulnp 'sport = :5434'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5434
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5434 '
Windows (Command Prompt)
netstat -ano | findstr :5434
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5434 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5434
From Windows
Test-NetConnection HOST -Port 5434
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5434

Block port 5434 in the firewall

ufw
sudo ufw deny 5434/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5434 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5434 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5434' -Direction Inbound -Protocol TCP -LocalPort 5434 -Action Block
ufw
sudo ufw deny 5434/udp
iptables
sudo iptables -A INPUT -p udp --dport 5434 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5434 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5434' -Direction Inbound -Protocol UDP -LocalPort 5434 -Action Block

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