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Port 2978 (ttc-etap-ds)

IANA assigns port 2978 to ttc-etap-ds: TTCs Enterprise Test Access Protocol - DS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ttc-etap-ds TCP TTCs Enterprise Test Access Protocol - DS Daniel Becker 2 -
ttc-etap-ds UDP TTCs Enterprise Test Access Protocol - DS Daniel Becker 2 -

Check what is listening on port 2978

Linux: is anything listening on TCP 2978?
sudo ss -tlnp 'sport = :2978'
Linux: UDP 2978
sudo ss -ulnp 'sport = :2978'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2978
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2978 '
Windows (Command Prompt)
netstat -ano | findstr :2978
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2978 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2978
From Windows
Test-NetConnection HOST -Port 2978
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2978

Block port 2978 in the firewall

ufw
sudo ufw deny 2978/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2978 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2978 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2978' -Direction Inbound -Protocol TCP -LocalPort 2978 -Action Block
ufw
sudo ufw deny 2978/udp
iptables
sudo iptables -A INPUT -p udp --dport 2978 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2978 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2978' -Direction Inbound -Protocol UDP -LocalPort 2978 -Action Block

Related ports

2976cns-srv-port2977ttc-etap-ns2979h263-video2980wimd

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