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Port 3613 (alaris-disc)

IANA assigns port 3613 to alaris-disc: Alaris Device Discovery.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
alaris-disc TCP Alaris Device Discovery Chris Dern -
alaris-disc UDP Alaris Device Discovery Chris Dern -

Registry dates for this port: registered 2004-06.

Check what is listening on port 3613

Linux: is anything listening on TCP 3613?
sudo ss -tlnp 'sport = :3613'
Linux: UDP 3613
sudo ss -ulnp 'sport = :3613'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3613
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3613 '
Windows (Command Prompt)
netstat -ano | findstr :3613
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3613 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3613
From Windows
Test-NetConnection HOST -Port 3613
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3613

Block port 3613 in the firewall

ufw
sudo ufw deny 3613/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3613 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3613 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3613' -Direction Inbound -Protocol TCP -LocalPort 3613 -Action Block
ufw
sudo ufw deny 3613/udp
iptables
sudo iptables -A INPUT -p udp --dport 3613 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3613 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3613' -Direction Inbound -Protocol UDP -LocalPort 3613 -Action Block

Related ports

3611six-degrees3612dataprotector3614sigma-port3615start-network

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