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Port 3571 (megardsvr-port)

IANA assigns port 3571 to megardsvr-port: MegaRAID Server Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
megardsvr-port TCP MegaRAID Server Port - -
megardsvr-port UDP MegaRAID Server Port - -

Check what is listening on port 3571

Linux: is anything listening on TCP 3571?
sudo ss -tlnp 'sport = :3571'
Linux: UDP 3571
sudo ss -ulnp 'sport = :3571'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3571
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3571 '
Windows (Command Prompt)
netstat -ano | findstr :3571
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3571 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3571
From Windows
Test-NetConnection HOST -Port 3571
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3571

Block port 3571 in the firewall

ufw
sudo ufw deny 3571/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3571 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3571 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3571' -Direction Inbound -Protocol TCP -LocalPort 3571 -Action Block
ufw
sudo ufw deny 3571/udp
iptables
sudo iptables -A INPUT -p udp --dport 3571 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3571 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3571' -Direction Inbound -Protocol UDP -LocalPort 3571 -Action Block

Related ports

3569mbg-ctrl3570mccwebsvr-port3572megaregsvrport3573tag-ups-1

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