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Port 7845 (apc-7845)

IANA assigns port 7845 to apc-7845: APC 7845.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
apc-7845 TCP APC 7845 American Power Conve -
apc-7845 UDP APC 7845 American Power Conve -

Check what is listening on port 7845

Linux: is anything listening on TCP 7845?
sudo ss -tlnp 'sport = :7845'
Linux: UDP 7845
sudo ss -ulnp 'sport = :7845'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7845
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7845 '
Windows (Command Prompt)
netstat -ano | findstr :7845
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7845 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7845
From Windows
Test-NetConnection HOST -Port 7845
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 7845

Block port 7845 in the firewall

ufw
sudo ufw deny 7845/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7845 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7845 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7845' -Direction Inbound -Protocol TCP -LocalPort 7845 -Action Block
ufw
sudo ufw deny 7845/udp
iptables
sudo iptables -A INPUT -p udp --dport 7845 -j DROP
nftables
sudo nft add rule inet filter input udp dport 7845 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 7845' -Direction Inbound -Protocol UDP -LocalPort 7845 -Action Block

Related ports

7802vns-tp7810rbt-wanopt7846apc-78467847csoauth

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