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Port 3573 (tag-ups-1)

IANA assigns port 3573 to tag-ups-1: Advantage Group UPS Suite.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
tag-ups-1 TCP Advantage Group UPS Suite James Goddard -
tag-ups-1 UDP Advantage Group UPS Suite James Goddard -

Registry dates for this port: registered 2002-08.

Check what is listening on port 3573

Linux: is anything listening on TCP 3573?
sudo ss -tlnp 'sport = :3573'
Linux: UDP 3573
sudo ss -ulnp 'sport = :3573'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3573
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3573 '
Windows (Command Prompt)
netstat -ano | findstr :3573
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3573 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3573
From Windows
Test-NetConnection HOST -Port 3573
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3573

Block port 3573 in the firewall

ufw
sudo ufw deny 3573/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3573 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3573 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3573' -Direction Inbound -Protocol TCP -LocalPort 3573 -Action Block
ufw
sudo ufw deny 3573/udp
iptables
sudo iptables -A INPUT -p udp --dport 3573 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3573 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3573' -Direction Inbound -Protocol UDP -LocalPort 3573 -Action Block

Related ports

3571megardsvr-port3572megaregsvrport3574dmaf-server, dmaf-caster3575ccm-port

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