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Port 7545 (nta-us)

IANA assigns port 7545 to nta-us: FlowAnalyzer UtilityServer.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nta-us TCP FlowAnalyzer UtilityServer Fred Messinger -
nta-us UDP FlowAnalyzer UtilityServer Fred Messinger -

Check what is listening on port 7545

Linux: is anything listening on TCP 7545?
sudo ss -tlnp 'sport = :7545'
Linux: UDP 7545
sudo ss -ulnp 'sport = :7545'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7545
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7545 '
Windows (Command Prompt)
netstat -ano | findstr :7545
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7545 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7545
From Windows
Test-NetConnection HOST -Port 7545
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 7545

Block port 7545 in the firewall

ufw
sudo ufw deny 7545/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7545 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7545 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7545' -Direction Inbound -Protocol TCP -LocalPort 7545 -Action Block
ufw
sudo ufw deny 7545/udp
iptables
sudo iptables -A INPUT -p udp --dport 7545 -j DROP
nftables
sudo nft add rule inet filter input udp dport 7545 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 7545' -Direction Inbound -Protocol UDP -LocalPort 7545 -Action Block

Related ports

7543atul7544nta-ds7546cfs7547TR-069 (CWMP)

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