HTTPfy

Port 4970 (ccss-qsm)

IANA assigns port 4970 to ccss-qsm: CCSS QSystemMonitor.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ccss-qsm TCP CCSS QSystemMonitor David Young -
ccss-qsm UDP CCSS QSystemMonitor David Young -

Registry dates for this port: registered 2006-01.

Check what is listening on port 4970

Linux: is anything listening on TCP 4970?
sudo ss -tlnp 'sport = :4970'
Linux: UDP 4970
sudo ss -ulnp 'sport = :4970'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4970
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4970 '
Windows (Command Prompt)
netstat -ano | findstr :4970
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4970 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4970
From Windows
Test-NetConnection HOST -Port 4970
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4970

Block port 4970 in the firewall

ufw
sudo ufw deny 4970/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4970 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4970 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4970' -Direction Inbound -Protocol TCP -LocalPort 4970 -Action Block
ufw
sudo ufw deny 4970/udp
iptables
sudo iptables -A INPUT -p udp --dport 4970 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4970 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4970' -Direction Inbound -Protocol UDP -LocalPort 4970 -Action Block

Related ports

4953dbsyncarbiter4969ccss-qmm4971burp4980ctxs-vpp

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