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Port 2349 (redstorm-diag, redstorm_diag)

IANA assigns port 2349 to redstorm-diag, redstorm_diag: Diagnostics Port IANA assigned this well-formed service name as a replacement for "redstorm_diag"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
redstorm-diag TCP Diagnostics Port IANA assigned this well-formed service name as a replacement for "redstorm_diag". David Weinstein -
redstorm_diag TCP Diagnostics Port
This entry is an alias to "redstorm-diag". This entry is now historic, not usable for use with many common service discovery mechanisms.
David Weinstein -
redstorm-diag UDP Diagnostics Port IANA assigned this well-formed service name as a replacement for "redstorm_diag". David Weinstein -
redstorm_diag UDP Diagnostics Port
This entry is an alias to "redstorm-diag". This entry is now historic, not usable for use with many common service discovery mechanisms.
David Weinstein -

Check what is listening on port 2349

Linux: is anything listening on TCP 2349?
sudo ss -tlnp 'sport = :2349'
Linux: UDP 2349
sudo ss -ulnp 'sport = :2349'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2349
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2349 '
Windows (Command Prompt)
netstat -ano | findstr :2349
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2349 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2349
From Windows
Test-NetConnection HOST -Port 2349
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2349

Block port 2349 in the firewall

ufw
sudo ufw deny 2349/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2349 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2349 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2349' -Direction Inbound -Protocol TCP -LocalPort 2349 -Action Block
ufw
sudo ufw deny 2349/udp
iptables
sudo iptables -A INPUT -p udp --dport 2349 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2349 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2349' -Direction Inbound -Protocol UDP -LocalPort 2349 -Action Block

Related ports

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