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Port 3451 (asam)

IANA assigns port 3451 to asam: ASAM Services.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
asam TCP ASAM Services Mike Gossett -
asam UDP ASAM Services Mike Gossett -

Registry dates for this port: registered 2002-04.

Check what is listening on port 3451

Linux: is anything listening on TCP 3451?
sudo ss -tlnp 'sport = :3451'
Linux: UDP 3451
sudo ss -ulnp 'sport = :3451'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3451
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3451 '
Windows (Command Prompt)
netstat -ano | findstr :3451
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3451 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3451
From Windows
Test-NetConnection HOST -Port 3451
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3451

Block port 3451 in the firewall

ufw
sudo ufw deny 3451/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3451 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3451 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3451' -Direction Inbound -Protocol TCP -LocalPort 3451 -Action Block
ufw
sudo ufw deny 3451/udp
iptables
sudo iptables -A INPUT -p udp --dport 3451 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3451 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3451' -Direction Inbound -Protocol UDP -LocalPort 3451 -Action Block

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