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Port 3162 (sflm)

IANA assigns port 3162 to sflm: SFLM.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sflm TCP SFLM System Administrator -
sflm UDP SFLM System Administrator -

Check what is listening on port 3162

Linux: is anything listening on TCP 3162?
sudo ss -tlnp 'sport = :3162'
Linux: UDP 3162
sudo ss -ulnp 'sport = :3162'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3162
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3162 '
Windows (Command Prompt)
netstat -ano | findstr :3162
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3162 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3162
From Windows
Test-NetConnection HOST -Port 3162
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3162

Block port 3162 in the firewall

ufw
sudo ufw deny 3162/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3162 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3162 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3162' -Direction Inbound -Protocol TCP -LocalPort 3162 -Action Block
ufw
sudo ufw deny 3162/udp
iptables
sudo iptables -A INPUT -p udp --dport 3162 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3162 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3162' -Direction Inbound -Protocol UDP -LocalPort 3162 -Action Block

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