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Port 31685 (dsx-monitor, dsx_monitor)

IANA assigns port 31685 to dsx-monitor, dsx_monitor: DS Expert Monitor IANA assigned this well-formed service name as a replacement for "dsx_monitor"..

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
dsx-monitor TCP DS Expert Monitor IANA assigned this well-formed service name as a replacement for "dsx_monitor". John Lowery -
dsx_monitor TCP DS Expert Monitor
This entry is an alias to "dsx-monitor". This entry is now historic, not usable for use with many common service discovery mechanisms. John Lowery -

Registry dates for this port: registered 2008-08-21.

Check what is listening on port 31685

Linux: is anything listening on TCP 31685?
sudo ss -tlnp 'sport = :31685'
Linux / macOS: which process owns the port
sudo lsof -nP -i :31685
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':31685 '
Windows (Command Prompt)
netstat -ano | findstr :31685
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 31685 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 31685
From Windows
Test-NetConnection HOST -Port 31685

Block port 31685 in the firewall

ufw
sudo ufw deny 31685/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 31685 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 31685 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 31685' -Direction Inbound -Protocol TCP -LocalPort 31685 -Action Block

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