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Port 3502 (avinstalldisc)

IANA assigns port 3502 to avinstalldisc: Avocent Install Discovery.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
avinstalldisc TCP Avocent Install Discovery Brian S Stewart 2 -
avinstalldisc UDP Avocent Install Discovery Brian S Stewart 2 -

Check what is listening on port 3502

Linux: is anything listening on TCP 3502?
sudo ss -tlnp 'sport = :3502'
Linux: UDP 3502
sudo ss -ulnp 'sport = :3502'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3502
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3502 '
Windows (Command Prompt)
netstat -ano | findstr :3502
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3502 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3502
From Windows
Test-NetConnection HOST -Port 3502
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3502

Block port 3502 in the firewall

ufw
sudo ufw deny 3502/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3502 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3502 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3502' -Direction Inbound -Protocol TCP -LocalPort 3502 -Action Block
ufw
sudo ufw deny 3502/udp
iptables
sudo iptables -A INPUT -p udp --dport 3502 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3502 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3502' -Direction Inbound -Protocol UDP -LocalPort 3502 -Action Block

Related ports

3500rtmp-port3501isoft-p2p3503lsp-ping3504ironstorm

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