HTTPfy

Port 2675 (ttc-etap)

IANA assigns port 2675 to ttc-etap: TTC ETAP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ttc-etap TCP TTC ETAP Daniel Becker -
ttc-etap UDP TTC ETAP Daniel Becker -

Check what is listening on port 2675

Linux: is anything listening on TCP 2675?
sudo ss -tlnp 'sport = :2675'
Linux: UDP 2675
sudo ss -ulnp 'sport = :2675'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2675
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2675 '
Windows (Command Prompt)
netstat -ano | findstr :2675
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2675 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2675
From Windows
Test-NetConnection HOST -Port 2675
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2675

Block port 2675 in the firewall

ufw
sudo ufw deny 2675/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2675 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2675 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2675' -Direction Inbound -Protocol TCP -LocalPort 2675 -Action Block
ufw
sudo ufw deny 2675/udp
iptables
sudo iptables -A INPUT -p udp --dport 2675 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2675 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2675' -Direction Inbound -Protocol UDP -LocalPort 2675 -Action Block

Related ports

2673firstcall422674ewnn2676simslink2677gadgetgate1way

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