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Port 2709 (supermon)

IANA assigns port 2709 to supermon: Supermon.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
supermon TCP Supermon Ron Minnich -
supermon UDP Supermon Ron Minnich -

Check what is listening on port 2709

Linux: is anything listening on TCP 2709?
sudo ss -tlnp 'sport = :2709'
Linux: UDP 2709
sudo ss -ulnp 'sport = :2709'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2709
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2709 '
Windows (Command Prompt)
netstat -ano | findstr :2709
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2709 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2709
From Windows
Test-NetConnection HOST -Port 2709
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2709

Block port 2709 in the firewall

ufw
sudo ufw deny 2709/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2709 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2709 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2709' -Direction Inbound -Protocol TCP -LocalPort 2709 -Action Block
ufw
sudo ufw deny 2709/udp
iptables
sudo iptables -A INPUT -p udp --dport 2709 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2709 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2709' -Direction Inbound -Protocol UDP -LocalPort 2709 -Action Block

Related ports

2707emcsymapiport2708banyan-net2710sso-service2711sso-control

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